| Pages:
1
..
50
51
52
53
54
..
60 |
outer_limits
Hazard to Others
Posts: 139
Registered: 3-3-2020
Member Is Offline
Mood: hybridized
|
|
Benzene, magnesium, chromic anhydride, diethyl ether, acetone
It's time to do some Grignard reactions 
Currently I don't have currently any idea for chromic anhydride but sometimes strange things happen and I bought it somehow
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
I have been meaning to get some lithium.... It's not cheap, but a little goes a long way.
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
As j_sum1 indicates, you can obtain lithium from batteries. It is relatively straight forward to do.
|
|
|
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 B(a)P  | | As j_sum1 indicates, you can obtain lithium from batteries. It is relatively straight forward to do. |
Can't batteries explode under certain conditions that could occur when you are opening one?
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
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
Yes they can. To mitigate the risk use batteries that are low on charge, understand what the positive and negative terminals are and avoid shorting
them and wear nitrile gloves and monitor the temperature of the battery frequently. If it starts to get hot put it outside or in the hood on a flame
proof dish.
|
|
|
Lion850
National Hazard
Posts: 517
Registered: 7-10-2019
Location: Australia
Member Is Offline
Mood: Great
|
|
Picked up today at Science Essentials in Brisbane:
- Formic acid 90%, AR grade, 500ml.
- Cobalt sulphate CoSO4.7H2O about 200g
- Cobalt oxide CoO 25g
- Cobalt oxide mix of Co2O3 and Co3O4 25g
For local members: Science Essentials received new stock of Formic acid. More or less A$50 for 500ml or $170 for 2.5L.
Glycine already on order from eBay, 200g. But I should have got it from Science Essentials it would have been a bit cheaper.
|
|
|
outer_limits
Hazard to Others
Posts: 139
Registered: 3-3-2020
Member Is Offline
Mood: hybridized
|
|
This week:
- 80 TLC plates
- 50 keck clips from ebay (in "normal" online shops they are 4-6 times more expensive than from China)
- stronger fume hood blower - this one sucks giving almost 0.6m/s of face velocity with sash fully opened (50cm). This will make everything a bit
more comfortable. Previous one was only 0.3 m/s at same sash positionig
[Edited on 19-8-2020 by outer_limits]
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
Tribasic calcium phosphate
Sodium bromide
Tartaric acid
Tin (ingot)
Zinc oxide
3A molecular seives
Strontium carbonate
Sodium borohydride
Nickel chloride
Sodium acetate
Sodium bisulfate
4-hydroxy TEMPO
Formalin
|
|
|
woelen
Super Administrator
Posts: 8027
Registered: 20-8-2005
Location: Netherlands
Member Is Offline
Mood: interested
|
|
I ordered 4 liters of clean colorless H2SO4 (96%). I still have some H2SO4, but I want to be sure to have some stock for the upcoming years. These 4
liters, together with the well over 2 liters I still have will last a long time for me.
I also purchased a whole set of rather tame chemicals. I have no real application for them in mind, but they were so cheap (so-called new old stock,
just a few euros per chemical, all of them A.R. grade in original, still sealed bottle) that I decided to buy the lot:
1 kg of sodium monochloroacetate
1 kg of sodium hydrogen succinate
500 grams of monosodium dihydrogen orthophosphate
500 grams of disodium monohydrogen orthophosphate
500 grams of disodium dihydrogen pyrophosphate
500 grams of sodium metabisulfite
500 grams of sodium thiosulfate 5-hydrate
250 grams of dibutylhydroxytoluene (BHT)
All of these chemicals are quite unreactive. The bottles had tattered labels, but the contents of the bottles is nearly pristine.
If any of you have some interesting ideas for applications of these chemicals, that would be nice.
[Edited on 31-8-20 by woelen]
|
|
|
Bedlasky
International Hazard
Posts: 1242
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
Phosphate and pyrophosphate can be used as complexing agent for Mn(III). Just dissolve phosphate/pyrophosphate with MnSO4 and sulfuric acid and then
add some permanganate. You'll obtain red solution. Pyrophosphate is better for this purpose, you need just a small amount of acid for reaction go
forward. With phosphate you need much more acid. These complexes are one of few Mn(III) complexes stable in aqueous solution.
Pyrophosphate is also good complexing agent for divalent cations.
Try synthesis of cobalt phosphate, ammonium cobalt phosphate and cobalt pyrophosphate. First is violet, second is purple and third is pink.
|
|
|
JJay
International Hazard
Posts: 3440
Registered: 15-10-2015
Member Is Offline
|
|
Sodium thiosulfate is good for neutralizing halogens. BHT is good for stabilizing ether. Sodium metabisulfite has several uses... generating sulfur
dioxide, neutralizing hexavalent chromium, purifying aldehydes and ketones.
The orthophosphates are good for making buffer solutions. You could make succinic acid and succinimide from the sodium hydrogen succinate.
I forgot to mention that I also got some platinum, one troy ounce.
[Edited on 31-8-2020 by JJay]
|
|
|
Bedlasky
International Hazard
Posts: 1242
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
I recently obtained some old lab stuff.
KBrO3
100g NaClO4
250g NaBiO3
500g KSCN
KSb tartrate
1kg Borax
500g Phenol
100g Glycine
1kg Na2H2edta
5g CsCl
[Edited on 5-9-2020 by Bedlasky]
|
|
|
Bedlasky
International Hazard
Posts: 1242
Registered: 15-4-2019
Location: Period 5, group 6
Member Is Offline
Mood: Volatile
|
|
500g Na2S2O8
Lets make some sodium orthoperiodate  .
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
Just received 500 mL of cyclohexanol from mario. I'll be using it to make cyclohexyl esters and follow some fun Vogel's procedures like preparation
of cyclohexene.
I was surprised to find out from MSDS that cyclohexanol is slightly toxic, compared to straight chain alcohols. It's even a possible co-carcinogen.
Now I'm wondering if cyclohexyl esters are safe.
Edit: sigma aldrich sells cyclohexyl esters as food grade flavoring agents so they are safe.
[Edited on 9-15-2020 by Cou]
|
|
|
Fery
International Hazard
Posts: 1026
Registered: 27-8-2019
Location: Czechoslovakia
Member Is Offline
|
|
Cou, also allylalcohol is much more toxic than other alcohols.
My latest acquisition: 5,0 g AuCl3 (10 ampoules x 0,5g) intended mostly for gold electroplating.
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
Just received confirmation of an order I made last night. Clearly I was more tired than I thought.
I saw a special on 100 nm Al powder and jumped on it, only $9.95AU for what I thought was 50 g. Turns out I purchased 1 g
What I was really after was 500 g of Barium chloride dihydrate AR, which apparently, I was successful in purchasing .
Edit: fixed spelling
[Edited on 22-9-2020 by B(a)P]
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
250 mL of nonanoic acid
|
|
|
Fery
International Hazard
Posts: 1026
Registered: 27-8-2019
Location: Czechoslovakia
Member Is Offline
|
|
Cou, which ester are you planning to synthesize from your nonanoic acid?
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
Probably pentyl nonanoate. It's supposed to smell like apricot or roses.
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
That will definitely be an improvement on nonanoic acid
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
Propionyl chloride, 100g
Isobutyryl chloride 100g
Acetyl chloride, 250ml
Benzoyl chloride, 250g
1,8-Diazabicyclo[5.4.0]undec-7-ene (DBU), 25g
[Edited on 9-23-2020 by Cou]
|
|
|
njl
National Hazard
Posts: 609
Registered: 26-11-2019
Location: under the sycamore tree
Member Is Offline
Mood: ambivalent
|
|
Cou, did you buy those from mario?
edit: just checked out your website, the page where you can chose the components of an ester is really cool!
[Edited on 9-24-2020 by njl]
|
|
|
Cou
National Hazard
Posts: 958
Registered: 16-5-2013
Member Is Offline
Mood: Mad Scientist
|
|
the low vapor pressure of nonanoic acid makes it not so horrible (unlike a bottle of butyric acid, which will stink up a whole room even if kept in a
sealed bottle). Nonanoic acid has a faint rancid cheese smell, or dirty socks
[Edited on 9-25-2020 by Cou]
|
|
|
B(a)P
International Hazard
Posts: 1139
Registered: 29-9-2019
Member Is Offline
Mood: Festive
|
|
| Quote: Originally posted by Cou |
the low vapor pressure of nonanoic acid makes it not so horrible (unlike a bottle of butyric acid, which will stink up a whole room even if kept in a
sealed bottle). Nonanoic acid has a faint rancid cheese smell, or dirty socks
|
That is interesting thanks, I always thought it was much worse than that.
|
|
|
Herr Haber
International Hazard
Posts: 1236
Registered: 29-1-2016
Member Is Offline
Mood: No Mood
|
|
20 liters of concentrated bleach
1 liter of 50% benzalkonium chloride
Ready for another lockdown 
And some sodium thiosulfate, sodium bromide, H2SO4...
The spirit of adventure was upon me. Having nitric acid and copper, I had only to learn what the words 'act upon' meant. - Ira Remsen
|
|
|
| Pages:
1
..
50
51
52
53
54
..
60 |
![[*]](images/xpblue/default_icon.gif){kind=icon}
