Sciencemadness Discussion Board - Latest chemical order?

Latest chemical order?

Pages: 1 .. 8 9 10 11 12 .. 15

JJay - 23-4-2017 at 12:41

That might work, but at the temperatures where KOH actually gives up its water I think it also fumes K2O. Maybe you could dehydrate it in a stream of potassium vapor.

If you post a thread in Chemistry in General or Beginnings, you can probably find someone who has actually attempted to dehydrate KOH and can tell you more.

PirateDocBrown - 25-4-2017 at 00:07

Found some inexpensive tech grade inorganics today, for general lab use.

Aluminum Sulfate, 4 lbs.
Ammonium Sulfate, 4 lbs.
Potassium Chloride, 4 lbs.
Calcium Hydroxide, 2 lbs.

All under 25 bucks. They all look quite pure.

NeonPulse - 26-4-2017 at 22:12

50g of nice crystalline CsCl. Looks like some nice lumpy crystals.
It's time to make some more Cs metal.

j_sum1 - 26-4-2017 at 22:19

That is nice. I am looking forward to doing the same.
Let us know how it goes. Include pics if you can.

Db33 - 27-4-2017 at 12:01

it took over a month but finally got the 3A Molecular Sieves i ordered from China.

PirateDocBrown - 5-5-2017 at 12:28

Made another order, this one to a pyrotechnic supply place.

1 lb Dextrin (they had it cheap)
1 lb Na Benzoate (make benzene from it?)
1 lb Powdered Ti (element collection!)
1 lb Lactose (just cause)
5 lb Mg turnings (drying, sodium production)
1 lb Gum Arabic (had some in my childhood chem set, why not?)

Previously, from a different pyro supplier, I got:

1 lb Zn powder
1 lb C powder
1 lb Sr(NO3)2
1 lb K2Cr2O7
1 lb 3A mole sieves

Very useful! Building a stockroom like this is kind of a delight for me, like I had playing with my chemistry set as a lad!

[Edited on 5/5/17 by PirateDocBrown]

JJay - 5-5-2017 at 14:40

I bought some proper sodium hydroxide. No more Roebic drain cleaner

Eyeborg - 6-5-2017 at 08:41

You guys will probably laugh at me because I'm getting chemicals from Wal-mart...
but I'm on a budget and Walmart is cheap

Sodium hydroxide drain cleaner 1lb
Sodium hypochlorite (10% bleach) 64 oz
Sulfuric acid drain cleaner 32oz
Magnesium sulfate 2lb
Hydrogen Peroxide (3%) 64oz
Sodium Bicarbonate 2lb
Aqueous Ammonia (5%) 128oz
Acetone 32oz
Isopropyl Alcohol (91%) 32oz
Hydrochloric acid (26%) 128oz

On the bright side, it only cost me $40.

JJay - 22-5-2017 at 18:50

2 kg technical sodium dichromate dihydrate. I won't have to dissolve silverware with hydrochloric acid, baking soda, and bleach ever again, but hey - it's fun.

oh and also

10 pounds potassium carbonate
10 pounds anhydrous sodium sulfate
8 pounds magnesium sulfate heptahydrate
5 pounds sodium acetate trihydrate

j_sum1 - 23-5-2017 at 19:28

Not so much an order as an acquisition.
A kilo and a half each of NaBr and KOH. (Thanks diddi.) Half a kilo of Mg ingots. (Thanks smooth-dealer , green star)
I sense some additions to my element collection coming on.

PirateDocBrown - 24-5-2017 at 00:48

Magnesium ribbon!

Got some diatomaceous earth, too.

[Edited on 5/24/17 by PirateDocBrown]

Plunkett - 25-5-2017 at 10:23

I bought some sodium bromide as a pool chemical to make bromine for my element collection. The supplier I ordered for either had the packets mispriced or was really trying to get rid of them because they were $0.16 for a 2 oz packet. Needless to say I ordered 100+ packets, around 8 kg, for $18. It is far more than I will ever use, but hey, I got a good deal.

[Edited on 25-5-2017 by Plunkett]

CharlieA - 25-5-2017 at 11:50

I think that you have the same malady that I do: spending money to save money. I seem to always want to get my unit cost lower, so I'll buy a pound instead of 100 g, etc., even though I'll probably never use the pound of stuff in my lifetime!

tsathoggua1 - 1-6-2017 at 10:03

That might explain why the melt was so irritating to be in the presence of, I didn't think such things as molten hydroxides HAD a vapor pressure to speak of, there did seem to be a disproportionate amount of volatility to it when fusing it in a molten metal bath, KOH/NaOH mixed melt seemed to deposit a fine layer of something up the wall near the pot, and the heating unit itself ended up coated in a dusty material that didn't seem nearly so hygroscopic as KOH or NaOH, in places that didn't receive aid in the form of being splattered there by NaK behaving as it quite predictably likes to behave.

Last orders were some large boxes of MgSO4 and garden lime, for use in drying things out, a couple of bottles of flowers of sulfur so I don't have to spend the effort to powder the solid sticks I had/have, 250g fine zinc dust and I forgot which now, since its been a while waiting for it, but 100 or 200g Na metal, plus some NaBH4, 100g of the latter, came in the convenient form of solid tablets weighing 1g each. Saves on weighing the bulk of whatever I need to use out and presumably improves the shelf life, although I gather NaBH4 already has a fairly good shelf life for a hydride reducing agent.

Got a question about the Zn dust actually, if nobody minds too much. The mesh size wasn't specified, but it is very fine, finer than expected. The labelling specifies to handle under inert gas and keep out of direct sunlight, due to claimed self-heating characteristics.

Is this mostly MSDS hype and BS, or is very fine zinc dust possessed of any pyrophoric tendencies? Zn isn't really a metal I've come to associate with pyrophoricity but on the other hand I've never worked with its extremely fine powder form before.

Just woke up after my anticonvulsant meds knocked me out for the count for most of the day to find I'd gotten mail, and that a water aspirator vacuum I'd ordered for less demanding applications had arrived,

Geocachmaster - 1-6-2017 at 10:07

950 ml of toluene

Some people have trouble finding toluene, but my problem was finding the right size. All the stores I looked in only stocked the gallon size! I had to special order this from a marine store.

woelen - 2-6-2017 at 00:29

100g of Eu2O3
3 g of LaB6

Especially the Eu-chemistry may be interesting. It is a colorless ion, but it forms many extremely brightly fluorescent compounds. Eu2O3 itself also is fluorescent (IIRC it emits red light under a UV-A source).

TheNerdyFarmer - 2-6-2017 at 11:02

200g potassium dichromates
200g potassium iodide
100g ammonium dichromate
100ml 1% gibberellic acid solution

All are ACS.

tsathoggua1 - 8-6-2017 at 10:39

2.5kg NaNO3 (really glad decided for postal safety reasons to order a nitrate, and do a distillation when HNO3 is needed, because the imbecile who sent this used a thin piece of cardboard, an unmarked thin inner unlabelled plastic bag to hold the damn nitrate, with the result that opening it caused plenty to drop out in my lap. Had it been HNO3 from the same moron...jesus that would have been mighty unpleasant! Managed to scoop it back up without losing more than a few grains but had to apply tests for oxidizing ability and for nitrate anion to determine what the stuff was.

1kg NaBr, so as to have Br2 on tap without having to store much directly, alkyl bromide syntheses, aryl bromides etc. and to have a go at synthesis of the Br/I and Br/Cl-containing interhalogens (skipping the fluorides, too damn nasty and ICl is bad enough when it comes to reactivity although storable without problems in the chemical fridge (its dedicated to this purpose, I don't keep things other than occasionally cool down things such as iPA or acetone temporarily in the fridge for food) in a glass container with a resistant plastic cap and seal, presumably some sort of fluoropolymer.

Also 5 liters of dry iPA and 1l acetonitrile, both ACS grade, the NaBr is pharm grade. The NaNO3..........anybody's bloody guess.

[Edited on 8-6-2017 by tsathoggua1]

tsathoggua1 - 9-6-2017 at 08:00

100g block of sodium metal that I'd been waiting for for a while finally came. Some slight tarnish on it, enough so its obviously not freshly cut but still in good condition with a few oxide patches here and there.

Arrived well packed, unlike the NaNO3, this came vac-sealed into an inner plastic pouch, previously filled with enough mineral oil of some nature to give it a protecting layer, then evacuated and hermetically sealed, and this primary inner container shipped within another hermetically sealed pouch, filled with inert gas. The Na itself came as one large single brick, a bit smaller than a clenched fist. Cost? about £20-something. Given its pyrophoric nature that isn't stored in any of my reagent cupboards, shelving, drawers etc. but within a glass tank so if it ever did catch fire, then it would at least be contained, and too far to spread to the likes of fine, flammable metal powders, phosphorus (white, red), solvents (especially away from those such as DCM, acetonitrile, etc. that could release noxious fumes if exposed to the heat of a metal fire. Now plenty warnings on it to discourage the stupid from attempting to interact with it in any manner.

I'll not be throwing any in water though, I've seen it, I've done it and see little need and less gain from ever doing so again. Na-impregnated silica gel might be one thing that it gets tested with, as well as for production of strong bases such as sodamide, Birch-type dissolving metal reductions when formation of cycloalkadienes from benzene rings is undesirable, since Na won't overreduce either to a cyclohexadiene or result in loss of aromaticity after reduction to a cyclohexane ring.

Bought some magnesium ribbon as well, mainly for a source of Mg that will react slower and more tractably than using the fine-mesh magnesium dust I have. Damn glad it was only the one seller packaging the product (the NaNO3) like a complete cretin. Having to sit there whilst someone grabbed something in order I could reclaim the spilled nitrate is annoying, but no more so than a gnat bite compared to what would of course happen with a 100g Na hot (and getting hotter by the second) brick fall in my lap and coming to rest on my dangly bits

Geocachmaster - 16-6-2017 at 06:37

I got some goodies!

5 lbs urea, 5 lbs sodium nitrate, 2 lbs sodium nitrite, 2 lbs sodium benzoate, 1 lb ammonium chloride, 500g sodium thiosulfate, 140g sodium persulfate, 100g potassium iodide, and 500 ml of benzyl alcohol. I also have 200g tin metal and 100 ml of n-butanol on the way!

JJay - 8-7-2017 at 18:30

I bought some titanium dioxide. I'm thinking titanium thermite and titanium tetrachloride look like fun.

AlChemicalLife - 18-7-2017 at 19:58

Calcium Carbide
Weight - 2 ounces

Ferric Ammonium Sulfate
Weight - 2 ounces
1 ea. Potassium Dichromate
Weight - 2 ounces

1 ea. Potassium Ferricyanide
Weight - 2 ounces

1 ea. Potassium Permanganate
Weight - 2 ounces

1 ea. Sodium Ferrocyanide
Weight - 2 ounces

6 ea. Amber PET Wide Mouth Jars
Size - 2 oz.

1 ea. Zinc Metal Dust
Weight - 2 ounces

tsathoggua1 - 19-7-2017 at 04:58

2.5 liters of THF, some Zn, as fine dust (mesh size unknown, carries a warning about self-heating and states to handle under inert atmosphere. Thinking along the lines of Urushibara catalysts for that). Most of my last buy was glassware, THF and Zn aside. (edit-forgot) a liter of toluene as well.

About to shopping soon. Could do with some dry EtOH, some CaO, CaC2, maybe I2. Would rather like some 4-DMAP and if there are leftovers then some more MeOH, since I only have 5l left. Need some more nitrethane and nitromethane as well.

Plus, definitely time to stock up on conc. sulfuric (thanks sulaiman for the link)

[Edited on 19-7-2017 by tsathoggua1]

PirateDocBrown - 19-7-2017 at 14:40

Sent my ID to Firefox. I'm not making drugs or explosives, so I'm not concerned with government problems.

Ordered a quart of sodium silicate, a pound of iron powder, and a pound of P2O5.

Where are you guys going for THF? I'm distilling it from PVC cement. Nitroalkanes would be cool, but I'd like alkyl halides even more. Acyl halides, too.

CaC2 would be pretty sweet to find. I've pretty much given up on good quality CaO for anything like a decent price. But let me know if you find any.

Let me know.

[Edited on 7/19/17 by PirateDocBrown]

tsathoggua1 - 20-7-2017 at 13:11

ebay, last time, for the THF.

myristicinaldehyde - 8-8-2017 at 10:59

300g Oxalic acid
50g sodium bromide
1lb potassium nitrate (not reagent grade...)

And a thermometer, which broke in transit :mad:

Oh well, just have to wait another 2 weeks.

j_sum1 - 13-8-2017 at 17:11

This.

woelen - 21-8-2017 at 12:09

Not a real chemical order for experiments, but a very beautiful set of samples:
- 1 g of rubidium
- `10 g of cesium
- 25 g of zinc

The cesium was quite expensive (170 euros), the rubidium also was quite expensive (55 euros) , but when my wife told me to buy this, in order to make the collection of elements nearly complete, I decided to do it. I have been waiting for this for a long time already and now I had the opportunity to buy a top-quality sample of cesium for a price, which was down by more than 30% since last year. Below follows a picture of the ampoule I have.

The Volatile Chemist - 21-8-2017 at 13:30

Quote: Originally posted by woelen

Not a real chemical order for experiments, but a very beautiful set of samples:
- 1 g of rubidium
- `10 g of cesium
- 25 g of zinc

The cesium was quite expensive (170 euros), the rubidium also was quite expensive (55 euros) , but when my wife told me to buy this, in order to make the collection of elements nearly complete, I decided to do it. I have been waiting for this for a long time already and now I had the opportunity to buy a top-quality sample of cesium for a price, which was down by more than 30% since last year. Below follows a picture of the ampoule I have.

Pretty sweet wife!

j_sum1 - 21-8-2017 at 14:54

Gorgeous sample woelen. I love that golden colour of Cs.
Ditto to TVC's comment.

woelen - 9-10-2017 at 04:39

A full 100 grams of bis-(2,4,5-trichloro-6-(pentyloxycarbonyl)phenyl)oxalate for only EUR 23 (simply on eBay, 6 items left, search for CPPO).
The name of this stuff is abbreviated as CPPO. It is a chemical, which can be used to make extremely strong and long-lasting chemiluminiscent solutions. Certain oxidizers (e.h. H2O2) at slightly alkaline pH can cause an intense pale blue glow, when brought in contact with this chemical. With certain fluorescent dyes it is possible to convert the bluish light to other colors. E.g. Rhodamine B can be added to the mix for deep red fluorescence. I expect fluorescein to cause bright yellow/green fluorescence.

In some countries this material is used in glow-sticks, which are plastic sticks filled with a solution of H2O2 in which there is a smaller glass stick, filled with a solution of CPPO in an organic solvent. On breaking of the glass, the two liquids mix and then there is a bright glow. For other colors than the pale blue/white, additional fluorescent dye is dissolved together with the CPPO.

This stuff is hard to make for an amateur. It requires the use of oxalyl chloride and chloro triphenol, both of which are quite nasty and hard to obtain. I once tried to make the latter, but the intense smell of this which remains lingering for a long time, made me stop the experiment. It was very unpleasant.
CPPO itself is much more easy to handle, only its precursors are such nasties.

[Edited on 9-10-17 by woelen]

j_sum1 - 9-10-2017 at 04:46

Sounds like fun, woelen!
FWIW, nurdrage made his own TCPO (bis(2,4,6-trichlorophenyl) oxalate) which is a similar compound -- presumably it works by the same mechanism. Buying it seems a lot less fuss though.

wg48 - 9-10-2017 at 12:33

Quote: Originally posted by woelen

A full 100 grams of bis-(2,4,5-trichloro-6-(pentyloxycarbonyl)phenyl)oxalate for only EUR 23 (simply on eBay, 6 items left, search for CPPO).

[Edited on 9-10-17 by woelen]

He also does 50g for about 2/3 of that price. He also has cheap PTFE beakers great for HF use.

Melgar - 9-10-2017 at 12:54

Could you extract CPPO from used glowsticks? Because you could easily collect collect sacks of them at certain concert venues for free.

I just accidentally ordered too much elemental selenium, and want to experiment with it, but this stuff doesn't seem very reactive at all. It seems like it oxidizes to white crystals slightly when it's molten in a test tube, but I'm worried about possibly catching it on fire and getting poison selenium dioxide everywhere. Nitric acid can oxidize it, but only slowly, and apparently not very well. I have at least 100 grams of the stuff now, and am coming to the realization that I don't have any ideas for what to do with it.

woelen - 29-10-2017 at 07:04

I did some experimenting with the CPPO. It does noty produce any light in aqueous solution. You need an organic solvent, both for the H2O2 and the CPPO.

I dissolved some CPPO in methyl acetate (ethyl acetate is better, but I'll have to buy some of that again). I also added a tiny pinch of Rhodamine G (available from eBay for a few euros).
In a separate test tube I extracted some H2O2 from a 30 % aqueous solution with amyl alcohol (ethyl acetate also works, methyl acetate does not work, it is miscible with water).
I mixed the solution of H2O2 with the solution of CPPO and rhodamine G. The result is a bright orange glow. This stuff really is amazing! When cleaning up this stuff, I poured it in the sink and that resulted in an orange glow with bright yellow spots everywehere. These bright yellow spots were at places, where there was some left over alkalinity from NaOH/Na2CO3 from an earlier experiment. This was not the smartest thing to do. It was really freaky to see the glow everywhere. While cleaning up with pieces of paper tussue, I also got it on my hands, on the workbench and it lasted long. Right now, I have pink stains on my hands, in the sink, on the workbench, and I have thrown away the towel with which I wiped clean.

Just ordered 2 liters of ethyl acetate and a liter of butyl acetate.

[Edited on 29-10-17 by woelen]

JJay - 2-11-2017 at 11:58

I ordered some oxalic acid. Right now I'm shopping for tricalcium phosphate.

JJay - 5-11-2017 at 10:25

I stopped by the hardware store for a few things, and while I was there I picked up some 99% boric acid roach killer. I wonder what the other 1% is....

woelen - 6-11-2017 at 04:13

The other 1% is unspecified. The boric acid is at least 99% pure, the rest is impurities. This can be moisture, sodium borates, or other compounds, depending on how the boric acid was made and purified.

JJay - 7-11-2017 at 08:08

I suspected probably moisture. I might try purifying it, although that is probably not necessary.

CharlieA - 7-11-2017 at 18:10

If it is just moisture, could you dry a sample to constant weight and calculate the weight loss?

JJay - 17-11-2017 at 20:52

I ordered some random health supplements:

Citric Acid
L-Phenylalanine
Ascorbic Acid
L-Alanine
Niacin
Glycine
Phenylethylamine HCl

The Volatile Chemist - 18-11-2017 at 21:01

Cool, JJay. Those are definitely in my sight eventually.
I just picked up some tetrachloroethylene and starter fluid for the first time, which I used in a (failed) phenolphthalein synth. Forgot the darned H₂SO₄....at least it didn't just fail for no reason.

JJay - 25-11-2017 at 01:27

I bought four bottles of aspirin, each containing 500 325 mg pills, so I can make some salicylic acid. I remember thinking on my way to the checkout, "They're probably going to suspect that I'm committing suicide or making meth, " but nobody batted an eyelash.

WangleSpong5000 - 2-12-2017 at 12:59

Quote: Originally posted by JJay

I bought four bottles of aspirin, each containing 500 325 mg pills, so I can make some salicylic acid. I remember thinking on my way to the checkout, "They're probably going to suspect that I'm committing suicide or making meth, " but nobody batted an eyelash.

A overdose of aspirin is unlikely to be fatal unless you ingest a fuckload of them. 100 of the 325mg pills is in the 'potentially lethal dose' range if you're a skinny prick of 50kg.

acetaminophen on the other hand is highly likely to cause death from acute liver failure at a dose of around 40 - 50 500mg tablets regardless of your weight. A slow agonizing death over a few days... a very stupid method of suicide. But it's not all bad... you've got 36 hrs to get you arse to hospital and it's a big bag of IV n-acetylcystiene to the rescue and you'll be fine... In fact as I take the stuff everyday for OCD anyway I'll figure I'll neck about 300 pills of panadol a day for a laugh cos why not aye?

Oh yeah... chemical order: GABA

And today I'll buy some PVC solvent to distill the THF from it... salicylic acid from aspirin sounds interesting though!

Perchlorate - 2-12-2017 at 13:08

I managed to find a sale for 4L of 99.9% Acetonitrile, and I couldn't resist. Now I just need to think of what to do with this quantity of Acetonitrile...

I also bought 1L of nn-Dimethyl Formamide, and a large amount of Chlorobenzene. All of this cost me just the equivalent of 82.05 USD, including shipping, so I'm feeling happy.

JJay - 2-12-2017 at 16:39

I got some sodium. It is crusty white with sodium oxides or sodium hydroxide, but it is also 100 grams more than I ordered, and the price was right.

PirateDocBrown - 3-12-2017 at 01:22

Just got 2 pounds Urea, and pound each MnSO4, and ZnSO4. Pretty good price, too.

Still seeking harder-to-find reactants: alkali metals, halides, hydrides, phosphorus and its compounds, halogenating agents, some transition metal catalysts, and organic halide, aldehyde, and nitro building blocks.

Some seem like you just can't get, others only at steep prices. Sigh. And to think about how many departmental discards I used to have access to.

woelen - 6-12-2017 at 23:46

I placed an order for 500 grams of 98% H3PO4 and 500 ml of SO2Cl(OH).
Both are quite special and allow experimenting under anhydrous conditions in strongly polar solvents.

PirateDocBrown - 7-12-2017 at 01:16

8 oz LiCO3
4 oz V2O5
1 lb SnCl2

woelen - 7-12-2017 at 03:37

Wow, LiCO3

That's really special, you took it from another universe with divalent lithium?

j_sum1 - 7-12-2017 at 04:16

Useful for synthesising dilithium I suppose.

NEMO-Chemistry - 7-12-2017 at 18:22

5L Ammonia 25w %•analytical grade
1kg Calcium hypochlorite 70% active chlorine
500g Sodium bisulphate/bisulfate
250g Ammonium bicarbonate
100g EDTA disodium salt dihydrate (Ethylenediaminetetraacetic acid)
1kg Ammonium Sulphate fertilizer grade
1kg Magnesium Stearate powder
Gelatine powder - Bloom 280
500g Potassium chloride food grade grade
1kg Barium sulphate
1kg Ammonium Chloride
1kg Sodium Acetate trihydrate
250g Potassium Bicarbonate
100g Glucose powder
500g Mono ammonium phosphate
25g Methylene blue - crystals
500g Potassium aluminium sulphate
500g Iron Metal Powder
150g Magnesium metal turnings (shavings) not powder 1mm 18mesh
25g Malachite Green Crystals
250g XYLITOL
100g Potassium ferricyanide

Still got some more stuff to order, that was from one place, havnt ordered any solvents

. Going to get rid of my boiling tubes and buy smaller test tubes

NEMO-Chemistry - 7-12-2017 at 19:58

500g Lithium carbonate
1Kg Cobalt Carbonate (had real trouble finding Cobalt salts in stock???) Dont ask how much!!!
VANADIUM PENTOXIDE 750g
NICKEL SHAVINGS 500g
Sodium Metalsilicate 1kg
fortunately there is two of us sharing this order! Got some more to order tomorrow

NEMO-Chemistry - 11-12-2017 at 14:40

A load of chems came today, i have stored them in the lab for now. Some need to be repackaged, but my lab is below freezing at the moment!! I was frozen by the time i unpacked, so will take pics tomorrow. I havnt had the heating on in the lab at all yet, its as cold as outside!!

j_sum1 - 14-12-2017 at 01:39

Ok not an order but a special surprise.

18 months ago while in the process of moving house I picked up a pile of chems and equipment at a garage sale -- elderly gentleman was going into aged care and his family was sorting out all his stuff including a home lab. I didn't have the time to look at what I was boxing up althought I did notice that there was a lot of items related to testing water quality.
Today I was sorting things, wiping the dust off bottles and relabelling to put them into my new lab. Amongst the goodies was a small amount of silver nitrate and about 500g of potassium iodate.

Also, I discovered that the drying oven that I thought topped out at 110C has a second setting (presumably a second element) and the thermostat goes to 200C. I am yet to test it but I think the signs are promising.

woelen - 14-12-2017 at 02:44

That 500 grams of KIO3 is very nice. It also is of high value, this is an expensive chemical. Those always are nice surprises.

PirateDocBrown - 14-12-2017 at 02:52

Quote: Originally posted by woelen

Wow, LiCO3

That's really special, you took it from another universe with divalent lithium?

Oops, that's NiCO3.

Geocachmaster - 30-12-2017 at 07:04

250g sodium metal

It was actully a Christmas present from my mom

Here it is, cleaned and stored under mineral oil in some glass jars:

621D333F-CBCC-4372-97D9-5CBC376225EF.jpeg - 1.2MB

[Edited on 12/30/2017 by Geocachmaster]

PirateDocBrown - 30-12-2017 at 17:19

Got some zinc oxide! Whee!

SWIM - 30-12-2017 at 21:35

25 grams of 10% platinum on alumina
25 grams of 10% palladium on alumina
a liter of hexamethyldisilazane
A liter of chlorobenzene
A liter of toluene
2 liters of GAA
500ml THF

AND some zinc oxide! Whee! (never been that into zinc oxide before, but damned if PirateDocBrown's enthusiasm isn't contagious.)

No, joke. I really did get zinc oxide.

Cryolite. - 31-12-2017 at 01:01

With all the talk about zinc oxide, I'm surprised no one's posted this

: https://www.youtube.com/watch?v=oAJ4XVmI4dc

Tdep - 31-12-2017 at 01:18

Quote: Originally posted by Cryolite.

With all the talk about zinc oxide, I'm surprised no one's posted this

: https://www.youtube.com/watch?v=oAJ4XVmI4dc

I thought I strangely recognised this, took me a while but this is what the Simpsons were parodying in this scene: https://youtu.be/U1iCZpFMYd0
that's hilarious

weilawei - 5-1-2018 at 12:04

50lb cylinder of liquid CO2 for making dry ice to use in cooling baths.

ninhydric1 - 5-1-2018 at 15:31

Silver nitrate 10 g (sigh, I should've made nitric acid but whatever)
Methylene blue 22 g
Citric acid 40 g

j_sum1 - 5-1-2018 at 15:36

Picked up 1.5kg of copper sheet at a garage sale for five bucks.

I also got some lead and some calcium sulfate which weren't really at a bargain price but never mind. I am pretty happy.

weilawei - 5-1-2018 at 15:40

It is far cheaper to make silver nitrate than buy it. I did this recently to silver flasks for Christmas ornaments. You can see a sliver of the silver coin I used remaining in the left side of the beaker. Yield was 96.4%, essentially quantitative.

JJay - 8-1-2018 at 16:48

I got an argon cylinder.

JJay - 2-2-2018 at 17:39

BHT - my beef jerky is going to be great

roXefeller - 2-2-2018 at 18:08

Resorcinol

Geocachmaster - 23-2-2018 at 13:47

This just arrived today. I’m super excited because I’ve been looking for chloroacetic acid for a while

7EDBC48F-E9DF-49AE-8D78-BC2E73752EDF.jpeg - 1.2MB

The company has kind of mixed reviews on Amazon, but I’ve ordered about $250 of stuff from them and had only good experiences.

happyfooddance - 23-2-2018 at 17:12

Quote: Originally posted by JJay

BHT - my beef jerky is going to be great

You can do better focusing on temp control during drying process, and keeping a low pH.

Preservatives do a great job at what they do, but if you can do without them, do without them.

mayko - 8-4-2018 at 15:58

non-dairy creamer from the grocery
A gallon jug of ethylene glycol antifreeze from the Really Free Market

woelen - 8-4-2018 at 23:23

This time, I ordered a chemical for swimming pools, not a true lab chemical.

An "oxygen fresh and pure discount pack" for small swimming pools: 2 kg of pure oxone, K2SO4.KHSO4.2KHSO5, plus 1 liter of so-called "activator" (don't know what it is and why oxone needs to be "activated", but it was part of the deal and could not be left out, maybe it is useful).

Oxone seems to be quite useful as a strong oxidizer (redox potential over 2.5 V), which also reacts quite fast (this in strong contrast with peroxodisulfates, which react sluggishly). In theory it should even be possible to oxidize chlorates to perchlorates with this oxidizer in aqueous solution. I severely doubt this, but it is an interesting direction of research. Getting cheap perchlorates is impossible with current regulations in the EU (you cannot buy cheap NaClO4 and KClO4 anymore, only the much more expensive HClO4 and NH4ClO4 can be purchased by individuals without license). Making chlorates is cheap and easy, but making perchlorates is hard. Maybe oxone can be used for oxidizing chlorate to perchlorate.

LearnedAmateur - 9-4-2018 at 01:32

Ordered myself and received a litre of DCM, plus 500g of NaNO2 - will need to set up for a crystallisation for a thread I made a promise on

Loptr - 9-4-2018 at 16:49

Quote: Originally posted by Geocachmaster

This just arrived today. I’m super excited because I’ve been looking for chloroacetic acid for a while

The company has kind of mixed reviews on Amazon, but I’ve ordered about $250 of stuff from them and had only good experiences.

Yes, they have some interesting listings.

woelen - 10-4-2018 at 11:05

The oxone arrived. That is super fast. I ordered Sunday evening, and this afternoon the parcel arrived. International shipping!

The oxone is pure. The bottle states ingredient: Pentapotassium bis(peroxymonosulphate) bis(sulphate) at a concentration of 1 gram/gram. It is a pure white free flowing powder.
The activator is less useful. It is a perfumed fairly viscous blend of amine-based polymers with a light blue color and fairly high alkalinity. The light blue color almost certainly is an additive to give it an extra fresh and oxygen-alike look and it also is a color which people expect in swimming pools. The fairly high alkalinity makes the peroxomonosulfate less stable and more reactive (max. reactivity is at pH around 9).

I tried a little experiment, mixing table salt with oxone and adding a few drops of water. This leads to heating up of the mix and production of chlorine. There are not many oxidizers which give chlorine directly with table salt when made humid. This is quite spectacular. Oxone is very reactive, much more so than potassium peroxodisulfate.

DraconicAcid - 10-4-2018 at 11:11

I just got some salicaldehyde and o-anisaldehyde, both so that my students can oxidize them to the acids (and possibly to a condensation rxn with the latter), and also so that I can try making salen-type complexes.

weilawei - 10-4-2018 at 13:04

From the Dept. of Boring But Necessary Chemicals, a couple pounds of calcium chloride.

warteo - 11-4-2018 at 00:17

Kind of excited about this for use as catalyst, 500g of p-Toluenesulphonic acid.

TheNerdyFarmer - 11-4-2018 at 04:00

Found some calcium carbide acetylene lantern fuel. 20 bucks for 3lbs

TheMrbunGee - 21-4-2018 at 14:02

1 x 5L Methanol, techn. - min 99% €16.60 (€16.60)
1 x 1L Hydrochloric acid, 34-35%, pure €7.24 (€7.24)
1 x 5L Nitric acid, 58-59%, purified €19.50 (€19.50)
1 x 1L 50% Hydrogen peroxide solution, pure €19.46 (€19.46)
1 x 5L Ethanol 93%, denatured €17.96 (€17.96)
1 x 3L Formic Acid solution, min 85% €16.92 (€16.92)
1 x 1kg Oxalic Acid dihydrate, min 99,5% €9.01 (€9.01)
1 x 500ml Chloroform, 99,9%, stabilized with amylene €12.91 (€12.91)
1 x 5L Methylene Chloride (Dichloromethane), 99-100% €24.80 (€24.80)
1 x Sodium Metal, min 99,8%, -, 1kg Sodium Metal in mineral oil, min 99,8%, -, CAS# 7440-23-5 €33.74 (€33.74)

Total: €178.14

found out about some company (http://www.limac.lv) placed the order, lets see if they are really going to sell this stuff to a private person.

Also hope that the package don't have cops attached to it.

(although I have no drugs or explosives on me, so what do I care..)

WangleSpong5000 - 21-4-2018 at 14:08

Calcium chloride
Activated charcoal
Potassium permanganate
L tyrosine

brubei - 21-4-2018 at 15:56

Quote: Originally posted by TheMrbunGee

1 x 5L Methanol, techn. - min 99% €16.60 (€16.60)
1 x 1L Hydrochloric acid, 34-35%, pure €7.24 (€7.24)
1 x 5L Nitric acid, 58-59%, purified €19.50 (€19.50)
1 x 1L 50% Hydrogen peroxide solution, pure €19.46 (€19.46)
1 x 5L Ethanol 93%, denatured €17.96 (€17.96)
1 x 3L Formic Acid solution, min 85% €16.92 (€16.92)
1 x 1kg Oxalic Acid dihydrate, min 99,5% €9.01 (€9.01)
1 x 500ml Chloroform, 99,9%, stabilized with amylene €12.91 (€12.91)
1 x 5L Methylene Chloride (Dichloromethane), 99-100% €24.80 (€24.80)
1 x Sodium Metal, min 99,8%, -, 1kg Sodium Metal in mineral oil, min 99,8%, -, CAS# 7440-23-5 €33.74 (€33.74)

Total: €178.14

found out about some company (http://www.limac.lv) placed the order, lets see if they are really going to sell this stuff to a private person.

Also hope that the package don't have cops attached to it.

(although I have no drugs or explosives on me, so what do I care..)

their catalog is very interesting

woelen - 22-4-2018 at 11:40

I personally would have left out the nitric acid and hydrogen peroxide. In the EU they really are forbidden and an attempt to buy these may lead to a lot of trouble, for you, but also for the seller if he really ships it to you.
If you want nitric acid, then I would invest in buying a few liters of conc. H2SO4 and a few kg of KNO3 (or NaNO3) and a decent small distillation setup. Then you can make HNO3 in small quantities, just what you need for a few experiments and you do not have to keep multiple liters of the acid around. That is my strategy. I make 50 ml of conc. HNO3 and that's what I keep around and if it is used up I make new acid. With H2O2 I can go to 20% or so, made from 12% by freezing. Good enough for nearly anything I want to do with H2O2. Again, no need to store forbidden high concentrations of H2O2.

This limac supplier looks interesting. He has an interesting range of chemicals for decent prices, but I wonder whether he really sells all of these to private persons.

TheMrbunGee - 22-4-2018 at 11:52

Quote: Originally posted by woelen

I personally would have left out the nitric acid and hydrogen peroxide. In the EU they really are forbidden and an attempt to buy these may lead to a lot of trouble, for you, but also for the seller if he really ships it to you.
If you want nitric acid, then I would invest in buying a few liters of conc. H2SO4 and a few kg of KNO3 (or NaNO3) and a decent small distillation setup. Then you can make HNO3 in small quantities, just what you need for a few experiments and you do not have to keep multiple liters of the acid around. That is my strategy. I make 50 ml of conc. HNO3 and that's what I keep around and if it is used up I make new acid. With H2O2 I can go to 20% or so, made from 12% by freezing. Good enough for nearly anything I want to do with H2O2. Again, no need to store forbidden high concentrations of H2O2.

This limac supplier looks interesting. He has an interesting range of chemicals for decent prices, but I wonder whether he really sells all of these to private persons.

I contacted them, they sell to hobbyists, but not everything, and they told I should make an order, and that way I will see what can I get.

I live 40 min drive from them, so I will go there myself and collect the stuff.

Thats why I added peroxide and nitric, just had to try!

Tomorrow they should give an answer, I will update then!

EDIT:

They refused to sell:

Chloroform,
Nitric acid >3%,
Hydrogen peroxide >12%

I can still get 10%..

[Edited on 23-4-2018 by TheMrbunGee]

Melgar - 23-4-2018 at 14:59

Okay, I happened to stumble on some deals too good to pass up, so I may have to try and hawk these reagents to you guys. The trouble was I often had to buy them in large amounts. So anyway, my last purchase was:

100g of sodium metaperiodate
500g of phosphorous acid
1000g n-methylformamide
1000g anhydrous AlCl3
2500g dibromomethane

Loptr - 23-4-2018 at 16:09

Quote: Originally posted by Melgar

Okay, I happened to stumble on some deals too good to pass up, so I may have to try and hawk these reagents to you guys. The trouble was I often had to buy them in large amounts. So anyway, my last purchase was:

100g of sodium metaperiodate
500g of phosphorous acid
1000g n-methylformamide
1000g anhydrous AlCl3
2500g dibromomethane

Where did you find that?

Melgar - 23-4-2018 at 17:06

Quote: Originally posted by Loptr

100g of sodium metaperiodate
500g of phosphorous acid
1000g n-methylformamide
1000g anhydrous AlCl3
2500g dibromomethane

Where did you find that?

A few different places. All in the US too. I believe the first three on the list, I bought the last of their inventory though. They only had the larger sizes left. I don't even have a lab set up or anything, but seeing only one left in inventory, I had to make a move.

Message me if you're interested in any of that stuff, since the quantities I had to order it in were far beyond what I'd ever use.

Incidentally, I've noticed that there's been a lot of listings for phosphite salts on eBay lately, but I'm not really interested.

woelen - 23-4-2018 at 22:51

@Melgar: Interesting buy: 2500g of CH2Br2. That's an insane amount. Must have been very expensive. What kind of reactions do you have in mind for CH2Br2?

I agree about the phosphites. A few years ago I purchased a few 100's of grams of Na2HPO3 and H3PO3, but these chemicals are very tame. They are very slow reductors, even with acidified dichromate you only get a very slow reaction. The number of experiments I did with these chemicals is very small. I expected more interesting chemistry.

@TheMrbunGee: Good to see that Limac does not sell conc. HNO3 and H2O2 to unlicensed people. That means that this seller takes laws seriously and that gives him a better chance to survive for a longer time and to be a nice source of chemicals. He has quite a lot of interesting stuff and I might consider ordering something from him as well.

Melgar - 24-4-2018 at 06:26

The Ch2Br2 cost less than $100. It was some sort of surplus deal. I only wanted a few hundred mL, but that was the size they had available. I've paid more for methylene chloride.

Other than the AlCl3, I mainly bought these because they're things I might use, and they were relatively cheap, even though the total order cost was higher than I'd want to pay. I'll probably have to try and recoup some of that expense by selling smaller amounts here and on eBay.

My thought was that oxidizable phosphorus compounds tend to react very strongly to halogens, but much less strongly to everything else. I figured it might come in useful for scavenging, say, evolved bromine in reactions where other reducing agents would interfere too much to be used.

Also, the salt that's been showing up on eBay is actually sodium hypophosphite, which until now I didn't realize was stable.

woelen - 24-4-2018 at 12:17

Hypophosphite is quite a different beast, it is much more interesting than phosphite. It is much more interesting than phosphite. The hypophosphite can be used to make really interesting compounds, such as copper(I) hydride, CuH, and it allows one to plate all kinds of smooth objects (glass, but also plastic) with a thin and shiny metal layer, such as nickel. Hypophosphite also is a very nice and interesting reductor. E.g. mixing with KClO3 gives a very energetic mix. It also reacts when heated. It decomposes, giving suboxides of phosphorus, which are spontaneously combustible. A nice demo is sprinkling a little sodium hypophosphite a a hot metal plate.

if you live in the US, however, forget about hypophosphites and hypophosphorous acid. As far as I know, they are forbidden, as drugs precursors. Where I live, sodium hypophosphite is sold by the kilo for EUR 20 per kilo or so, no questions asked, used for hobby metal plating.

mayko - 6-5-2018 at 17:14

About a pound of paradichlorobenzene as "para" moth balls; looking forward to do some of the experiments here:

http://www.sciencemadness.org/talk/viewthread.php?tid=14000&...
http://www.sciencemadness.org/talk/viewthread.php?tid=14000&...

DavidJR - 30-5-2018 at 00:41

Handful of recent purchases, not all received yet:

25kg each of sodium hydroxide and potassium hydroxide (cost £40 and £55 respectively).
12 litres of One Shot drain opener (91% sulphuric acid, £60)
1g 5% Pd/C
500ml butan-1-ol
500ml propan-1-ol
100ml 2-methyl-propan-1-ol (isobutanol)
200g strontium carbonate
250g chloral hydrate
100g iodine prills
100ml di-n-butylamine
100g nicotinic acid (niacin)
50g napthalene (mothballs)

woelen - 30-5-2018 at 00:56

I had a nice purchase: a little more than 70 grams of a chemical, sold as Ru(OH)3 to me, for a little over 100 euros. Normally, Ru-salts are MUCH more expensive.

I do not believe it is Ru(OH)3, but most likely it is a form of hydrous RuO2, maybe something like RuO2.H2O or RuO(OH)2.

It is a free flowing black powder, which quite easily dissolves in strong bleach, giving a dark olive green solution of perruthenate (RuO4(-)), which quickly decomposes, giving dark red ruthenate (RuO4(2-)). The bleach also decomposes, giving oxygen and chloride. On longer standing the ruthenate also decomposes, giving a black deposit on the glass, probably hydrous RuO2 again. When fresh bleach is added, then the liquid becomes dark olive green again.

The stuff does not dissolve appreciably in conc. HCl. After days of standing, the liquid becomes somewhat brown/red, but nearly all of it still sits at the bottom under the HCl.

Cryolite. - 30-5-2018 at 01:38

Woelen, are you interested in parting with any of that ruthenium? I would be happy to give some of it a home

VSEPR_VOID - 30-5-2018 at 05:59

Quote: Originally posted by DavidJR

Handful of recent purchases, not all received yet:

25kg each of sodium hydroxide and potassium hydroxide (cost £40 and £55 respectively).
12 litres of One Shot drain opener (91% sulphuric acid, £60)
1g 5% Pd/C
500ml butan-1-ol
500ml propan-1-ol
100ml 2-methyl-propan-1-ol (isobutanol)
200g strontium carbonate
250g chloral hydrate
100g iodine prills
100ml di-n-butylamine
100g nicotinic acid (niacin)
50g napthalene (mothballs)

Its strange that its legal to purchase such a large amount of choral hydrate

DavidJR - 30-5-2018 at 06:06

Quote: Originally posted by VSEPR_VOID

Its strange that its legal to purchase such a large amount of choral hydrate

It’s not a regulated substance in the UK.

Funnily enough though the drain cleaner will be very soon though - hence my stocking up.

SWIM - 30-5-2018 at 08:12

Quote: Originally posted by woelen

if you live in the US, however, forget about hypophosphites and hypophosphorous acid. As far as I know, they are forbidden, as drugs precursors.

It is both legal and available from US manufacturers.

woelen - 31-5-2018 at 00:54

Quote: Originally posted by Cryolite.

Woelen, are you interested in parting with any of that ruthenium? I would be happy to give some of it a home

See U2U. If you act quickly you may get some of this too.

S.C. Wack - 31-5-2018 at 02:59

Quote: Originally posted by SWIM

It is both legal and available from US manufacturers.

Or hypophosphorus acid and its salts are list 1 with no threshold. My last order was a couple years ago I think, a gallon of DCM.

[Edited on 31-5-2018 by S.C. Wack]

Pages: 1 .. 8 9 10 11 12 .. 15