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Rex-Scientific - Awesome service!
Yeah, I've ordered from them several times, always been happy. |
11-5-2019 at 08:21
by: DavidJR |
Latest chemical order?
[rquote=612096&tid=9890&author=woelen]
With systemic volatile poisons like strong methylati ... |
10-5-2019 at 05:20
by: DavidJR |
Latest chemical order?
[rquote=612022&tid=9890&author=woelen]I decided not to order this stuff. I can buy 1000 ml o ... |
9-5-2019 at 06:45
by: DavidJR |
Pretty Pictures (2)
Are you sure that's salicylic acid? When I recrystallised some of mine, I got needle-like crystals. ... |
7-5-2019 at 17:55
by: DavidJR |
Latest chemical order?
Slightly scary one on order now- 100ml of dimethyl sulphate. I paid a little extra to get it in a Su ... |
6-5-2019 at 16:33
by: DavidJR |
Determning purity of OTC sodium hydroxide
I would expect at least 10% water. |
4-5-2019 at 15:05
by: DavidJR |
Lidocaine Base USP for sale
[rquote=611110&tid=149544&author=Tsjerk]Explain me what I should do with it besides cutting ... |
1-5-2019 at 11:00
by: DavidJR |
Septum / thermometer adapter washer
An O-ring. |
28-4-2019 at 05:44
by: DavidJR |
Latest chemical order?
Another sigma order:
[list]
[*] Phosphorus pentachloride, 500g
[*] Sodium methoxide (powder), 100 ... |
24-4-2019 at 03:11
by: DavidJR |
Round bottom flask vs 'round bottom flask with flat bottom'
Yes, you can use them. I also use them under vacuum, as well as erlenmeyers, and never had any issue ... |
24-4-2019 at 02:35
by: DavidJR |
Trying to get rid of chemicals. Nearish Philadelphia
Be very careful with the reactive metals, especially potassium. |
21-4-2019 at 09:16
by: DavidJR |
Trying to get rid of chemicals. Nearish Philadelphia
I'll categorise that list by the major hazards for each substance.
Things that don't present any ... |
19-4-2019 at 15:39
by: DavidJR |
Amateur chemists in the UK - legal requirements
[rquote=609050&tid=148230&author=RedDwarf]
The latter gives a list of explosive precursors ... |
17-4-2019 at 07:23
by: DavidJR |
Free Chemicals, Walsall, UK
Well, I would suggest leaving instructions to ask on here - either to give stuff away to a good home ... |
16-4-2019 at 03:41
by: DavidJR |
Ninhydrin reactions
For access to paywalled papers, etc, try Sci-Hub (see sci-hub.tw and sci-hub.se). It's very good.
... |
16-4-2019 at 02:41
by: DavidJR |
EDTA to EDA? Naphazoline Synthesis
[rquote=608686&tid=147993&author=hissingnoise]That reaction, I believe, requires pressure at ... |
15-4-2019 at 09:10
by: DavidJR |
EDTA to EDA? Naphazoline Synthesis
Do you have 1,2-dichloroethane or 1,2-dibromoethane? Reacting either of these with aqueous ammonia c ... |
15-4-2019 at 03:38
by: DavidJR |
UK suppliers
We have a wiki page with suppliers, I've added all of the ones I use: http://www.sciencemadness.org/ ... |
15-4-2019 at 02:46
by: DavidJR |
Zolpidem impurity
[rquote=608437&tid=147477&author=sporemaster]
if you react this mentioned Zolpidem impurity ... |
13-4-2019 at 02:54
by: DavidJR |
Removing KOH from K-GHB
Acidify with HCl to produce the free acid, distill under vacuum, carefully neutralise the free acid ... |
12-4-2019 at 15:55
by: DavidJR |
Is it possible to do free radical halogenation with normal lab supplies?
I made a small amount of carbon tetrachloride by bubbling chlorine gas into chloroform while under a ... |
10-4-2019 at 17:04
by: DavidJR |
Safely storing Diethyl ether
[rquote=607838&tid=147526&author=MrHomeScientist]Does the BHT interfere with some reactions? ... |
9-4-2019 at 04:45
by: DavidJR |
T-butanol from Citric acid?
Sodium borohydride does not reduce carboxylic acid groups. However, it can reduce the acid to the al ... |
8-4-2019 at 13:44
by: DavidJR |
Making kcn from koh, formic acid and nh4cl!
[rquote=607844&tid=147431&author=Eddygp]How do you suggest that formamide --> cyanide wou ... |
8-4-2019 at 10:33
by: DavidJR |
Stabilizing ether with BHT
[rquote=607832&tid=94878&author=Boffis]I often recycle ether and therefore have to distil it ... |
8-4-2019 at 07:43
by: DavidJR |
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