| Pages:
1
..
49
50
51
52
53
..
60 |
Draeger
Hazard to Others
Posts: 185
Registered: 31-1-2020
Location: North-Rhine Westfalia, Germany
Member Is Offline
Mood: Slowly getting ready for new projects
|
|
Quote: Originally posted by Mateo_swe  | I got all except DCM and AA at the shop linked below.
DCM and AA was on ebay.
The guy selling the DCM & AA is selling a pail with 1000L Acetic Anhydride, i thought i did see wrong but no, he is.
I actually have no use for the AA but when the opportunity to buy some came i though why not, i can do something fun with it.
I checked now, he doesnt have any for sale anymore, i guess i was lucky.
https://onyxmet.com/index.php?route=common/home
|
Aw, I'd also really have loved to get some AA for future use. I'm curious, how much did it cost?
I know Onyxmet, but I didn't know they sold some of the compounds you listed. IMO they really didn't categorize the compounds well, unless I missed
something.
How much did the Onyxmet order cost?
[Edited on 10-7-2020 by Draeger]
Collected elements:
Al, Cu, Ga, C (coal), S, Zn, Na
Collected compounds:
Inorganic:
NaOH; NaHCO3; MnCl2; MnCO3; CuSO4; FeSO4; aq. 30-33% HCl; aq. NaClO; aq. 9,5% ammonia; aq. 94-96% H2SO4; aq. 3% H2O2
Organic:
citric acid, sodium acetate, sodium citrate, petroleum, mineral oil
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
100 grams potassium dichromate, for making aldehydes and carboxylic acids from alcohols to find out what they smell like.
still waiting for these items (slow shipping during covid):
500 mL 1-propanol
500 mL 1-butanol
500 ml butyraldehyde
500 mL 1-pentanol
[Edited on 7-11-2020 by Cou]
|
|
|
Mateo_swe
National Hazard
Posts: 548
Registered: 24-8-2019
Location: Within EU
Member Is Offline
|
|
The 1000ml Acetic anhydride was 52 Euro plus shipping total 80 Euros.
The Onyxmet order (actually it was 2 orders a few days apart) was 33.75 + 165.5 = 199,25 Euro for the 12 different chems.
The most expensive item fron Onyxmet was the NaBH4 100g that was 45 Euro.
But 45 Euros for 100g Sodium borohydride isnt terrible high compared what others charge for it.
Here are the Onyxmet order with cost in Euros.
Product Quantity Price
Phosphorus pentoxide 100g 30.00€
Copper(II) sulfate pentahydrate 500g 7.50€
Sodium nitrite 100g 10.00€
Sodium thiocyanate 100g 9.50€
Sodium pyruvate 10g 9.75€
Aluminium chloride (anhydrous) 200g 25.00€
Urea / Carbamide 99,7% 1000g 6.25€
Sodium borohydride 100g 45.00€
Sodium 99,8% 100g 22.50€
Disodium phosphate 500g 12.50€
Strontium titanate 20g 6.25€
Barium titanate 20g 15.00€
|
|
|
sciece nerd
Harmless
Posts: 25
Registered: 27-8-2019
Member Is Offline
|
|
What are the two titanates used for?
Something pyrotechnics related? (Because you bought the Ba and Sr salts)
[Edited on 11-7-2020 by sciece nerd]
|
|
|
Mateo_swe
National Hazard
Posts: 548
Registered: 24-8-2019
Location: Within EU
Member Is Offline
|
|
Nothing that fun im afraid, im going to experiment with some homemade capacitors.
The barium & strontium titanates have very high dielectric constants, just a fun experiment if i can make some usable capacitors.
Fireworks would have been fun but i have very limited knowledge in that area.
I blew a big hole in our garage door when i was 15, since then i havent experimented with explosives and fireworks.
I have thought about making some candy rocketmotors though.
I have some KNO3 and sugar we have in the kitchen.
I have seen a video where they melt the 2 together and pour into cardboard tubes.
Then just drill out the core and you have a DIY rocketmotor.
Some safety precautions must be taken, i dont want blow up another garage door.
[Edited on 2020-7-11 by Mateo_swe]
|
|
|
woelen
Super Administrator
Posts: 8027
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
|
|
Some new interesting chemicals for me 
100g K2Ni(CN)4.H2O, potassium tetracyanonickelate(II) monohydrate
100g KSbO3, potassium metaantimonate(V)
100g Na2S.9H2O, reagent grade (not the usual yellow flakes, but pure colorless crystals)
Most interesting is the cyanonickelate. It can be reduced and it can be oxidized, making different cyano-complexes of nickel in very unusual oxidation
states 0, +1, and +3, without the need to handle free cyanide. In this complex, just as in the ferrocyanides, the cyanide is quite strongly bound to
the nickel and hence it is much safer to work with this, than with free cyanide.
[Edited on 17-7-20 by woelen]
|
|
|
BrainAmoeba
Harmless
Posts: 15
Registered: 12-7-2020
Location: It depends...
Member Is Offline
Mood: Poisoned
|
|
Some common chemicals in small amounts...
Sodium Azide - 10g
Sulfuric Acid 98% - 100ml
Nitric Acid 60% - 250ml
Potassium Permanganate - 50g
|
|
|
Nonexistent
Harmless
Posts: 22
Registered: 6-10-2018
Member Is Offline
|
|
| Quote: Originally posted by Mateo_swe |
I blew a big hole in our garage door when i was 15, since then i havent experimented with explosives and fireworks.
I have thought about making some candy rocketmotors though.
I have some KNO3 and sugar we have in the kitchen.
I have seen a video where they melt the 2 together and pour into cardboard tubes.
Then just drill out the core and you have a DIY rocketmotor.
Some safety precautions must be taken, i dont want blow up another garage door.
[Edited on 2020-7-11 by Mateo_swe] |
Ahh, good old rocket candy. I myself played with it far too often when younger and because of how relatively safe it is (one friend got burnt with it
being stupid) I admit, led me to be far too lax later in life, and I mean, wayyyy too relaxed. Luckily no bad burns or lost fingers, but really
shockingly so, but hey, if you want some fun and not much danger, it is your friend, just don't let it fool you for other things that can go bang.
I've been looking for a new buy myself but not sure what lately. In Australias worst chemical state I'm limited for both glassware and chems, but
really need something to garner my attention other than beer. Reccomendations are welcome.
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
| Quote: Originally posted by BrainAmoeba | Some common chemicals in small amounts...
Sodium Azide - 10g
Sulfuric Acid 98% - 100ml
Nitric Acid 60% - 250ml
Potassium Permanganate - 50g |
Do you mind me asking where you source your sodium azide?
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
Hoping to order 250 grams (maybe lower to 50 grams if i freak out about overspending, but it's a useful chemical to invest in) of oxalyl chloride, and
500 mL DMF, for making acid chlorides from carboxylic acids. Pyridine as the organic base required in reaction of acid chlorides with tertiary
alcohols to form esters.
[Edited on 7-20-2020 by Cou]
|
|
|
HeYBrO
Hazard to Others
Posts: 289
Registered: 6-12-2013
Location: 'straya
Member Is Offline
Mood:
|
|
| Quote: Originally posted by Cou | Hoping to order 250 grams (maybe lower to 50 grams if i freak out about overspending, but it's a useful chemical to invest in) of oxalyl chloride, and
500 mL DMF, for making acid chlorides from carboxylic acids. Pyridine as the organic base required in reaction of acid chlorides with tertiary
alcohols to form esters.
[Edited on 7-20-2020 by Cou] |
get some triethylamine and use DMAP as the nucleophilic catalyst
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
500 mL dimethylformamide
50 grams oxalyl chloride
500 mL N,N-dimethylaniline
for making acid chlorides from carboxylic acids, then reacting them with tertiary alcohols.
[Edited on 7-20-2020 by Cou]
|
|
|
Mateo_swe
National Hazard
Posts: 548
Registered: 24-8-2019
Location: Within EU
Member Is Offline
|
|
Where did you find the 500mL N,N-dimethylaniline and was it expensive?
That is not so commonly found, except from the big suppliers not available to most hobby experimenters.
|
|
|
fdnjj6
Banned by request
Posts: 114
Registered: 20-2-2019
Member Is Offline
Mood: Pissed
|
|
I mainly just had a HUGE upgrade to my lab equipment. Proper magnetic stirrer hot plate, 3 necked RBF, pH paper (fucking finally! I don't know why
buying it took me so long), glass for my digital thermometer I built, and some glass stoppers. I still need to buy a fan to vent fumes and also get
some more storage bottles for the chemicals I make.
As far as chemicals goes,
What I'll be ordering in the future:
Potassium hydrogen phthalate
Maybe some oxalic acid
Concentrated solution of sodium hypochlorite
The order I put in a few days ago was the only chemical I didn't buy OTC and that was just because I didn't need a giant jug of it from my hardware
store
1/4 pound of potassium permanganate
The chemicals I need I usually source from stuff I can buy at my hardware stores. The multi step synthesis I am planning to do is luckily going to be
able to be sourced 100% from easy to get chemicals. The KMnO4 I just want a smaller quantity of.
|
|
|
violet sin
International Hazard
Posts: 1482
Registered: 2-9-2012
Location: Daydreaming of uraninite...
Member Is Offline
Mood: Good
|
|
Thank you wish.com.... bunch of complaining not needed here, save you the trouble..
100g Ga metal, months late and beat till breached it's bottle. Someone must have crunched it so hard the frozen portion beat through the inner bottle.
It was labeled "iron sheet"
In trying to transfer it to other containers, it occurred to me, the solid bit is pretty darn hard. It's melting out of the crippled bottle now.
Force didn't adjust the shape at all. It's warm out still, almost would have expected a chunky aggregate of crystals, but no.
Everything seems to have been sealed in the ziplock bag, and most should be recoverable, though inconvenient.
   
It does get granular in a puddle kinda like weird aggregate, and when dropped, show faceted crystals beneath the liquid film.
It was 26$ with 12$ additional shipping, ordered on May 15, and came like above. I wasn't really pleased. I've already some GaInSn from a computer
cooling system bought years and years ago, but no straight Ga sample. It's messy, my hands were grey a pile of times trying to wrangle the stuff for
measurement.
[Edited on 2-8-2020 by violet sin]
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
Gallium is surprisingly brittle in solid state. Smash it and bits go everywhere.
As a liquid it wets nearly everything and is hard to get off cleanly.
I dislike working with it. It might be different if I had plenty to spare and was not concerned about mechanical losses.
|
|
|
njl
National Hazard
Posts: 609
Registered: 26-11-2019
Location: under the sycamore tree
Member Is Offline
Mood: ambivalent
|
|
jsum, while not totally ethical I have been able to get total refunds from wish with no need to send the product back, simply because it's too
expensive for them to pay for the return shipping. and on a platform like wish I personally would've expected more for that much money.
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
Tribasic calcium phosphate. I am going to try to reduce it with aluminum.
|
|
|
monolithic
Hazard to Others
Posts: 436
Registered: 5-3-2018
Member Is Offline
Mood: No Mood
|
|
Does anyone know where I can get vanillin for cheap? I thought it would be relatively cheap (under $30 a kg) based on posts I've read here. I'm seeing
$120 + S&H on chemsavers, possibly $56 + S&H on Amazon (not sure if it's pure vanillin or food grade crap that's 90% sugar), and not much of
anything on eBay. I live in the USA. I want to buy 500 g but I'll go for a kg if I have to.
edit: Sigma sells it for $66 per kg, not that they would sell to me. It is cheap even from an expensive supplier like Sigma, I just can't seem to find
a place that will sell to private individuals...
[Edited on 8-5-2020 by monolithic]
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
Yeah, it's pretty easy to find, or at least it was... I don't see why anyone would refuse to sell it to private individuals... you could theoretically
be doing something nefarious with it, but that's uncommon, and if you can do nefarious things with vanillin, taking the vanillin away won't stop you
from doing nefarious things. I sent you a PM.
|
|
|
Tsjerk
International Hazard
Posts: 3032
Registered: 20-4-2005
Location: Netherlands
Member Is Offline
Mood: Mood
|
|
Gallium does expand when it freezes, maybe it cracked it the plastic?
|
|
|
violet sin
International Hazard
Posts: 1482
Registered: 2-9-2012
Location: Daydreaming of uraninite...
Member Is Offline
Mood: Good
|
|
@ Tsjerk
It's quite a flexible container. I'd guess LDPE, strikingly similar to the plastic wash bottles. Mine(wash bottle) is marked LDPE but the gallium
container only says "5" on the bottom.
You can see it was punctured in two areas in the second pic. To my untrained eye, it doesn't look like wear or expansion. The hard nuggets inside
were sharpish looking as I tried to shake it out. I did notice it's capable of breaking glass on freezing, so I have it outside for the time being in
containers I'd assume to be polypropylene. They are shiny, hard and somewhat brittle, so outside, but basically all I had on hand.
@ monolithic,
if I'm not mistaken, dollar tree vanilla extract is just coloring, vanillin and water, with a preservative. It's probably not a whole lot of
vanillin, and that makes it probably not cheap, so likely a poor suggestion. Quite available none the less.
The determination of vanillin in vanilla extract: An analytical chemistry experiment
https://doi.org/10.1021/ed067p1070
"The concentration of vanillin in imitation vanillin extract, as purchased from the supermarket, varies with the brand name hut is usually in the
range 5+/- 2 mg/mL."
So 200ml for 1g ... Not very good
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
After 5 months of waiting, I finally received 50 grams of sodium metal from Russia.
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
Glad to hear it! This gives me a faint glimmer of hope my Russian order placed in March may yet show up.
|
|
|
j_sum1
Administrator
Posts: 6333
Registered: 4-10-2014
Location: At home
Member Is Offline
Mood: Most of the ducks are in a row
|
|
About 220g of lithium rod from a fellow SM member who picked it up cheap. It is stored in a glass jar under air and has some oxidation but it is not
too bad. My intention is to improve the storage conditions: probably in the same jar under light hydrocarbon with a lump of lead to prevent
flotation.
I will post pics later.
Uses: some for the element collection, some will (eventually) be used to synthesise some Cs. Some will get converted to LiCl. Lots of possible
experiments and demos for my students. I will definitely get my money's worth out of it.
(And in the meantime I can be a bit extravagant with the small pile of Li I have scavanged from batteries. Crimson flames, here we come!)
|
|
|
| Pages:
1
..
49
50
51
52
53
..
60 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
