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A slight problem...
I never count my ABEK mask as a protection, but a back-up. Maybe sounds stupid, but I reactively hol ... |
13-11-2020 at 11:17
by: Fyndium |
Benzaldehyde synthesis using aqueous nitric acid
Just wonder if NO2 catalyzes benzyl nitrite formation, could nitrate residues cause formation of ben ... |
13-11-2020 at 09:58
by: Fyndium |
Benzaldehyde synthesis using aqueous nitric acid
Hmm, thanks for the input. Funny how the research paper states to heat for 240min instead of just st ... |
12-11-2020 at 23:21
by: Fyndium |
Benzaldehyde synthesis using aqueous nitric acid
Well, whatever I did, the main composition was not benzaldehyde, although the smell was there.
At ... |
12-11-2020 at 14:56
by: Fyndium |
Does methanol smell like anything to you?
I think the easier you smell stuff the better. You can quickly notice if something's up - or wrong. ... |
12-11-2020 at 14:18
by: Fyndium |
Are there borders for "hazardous material" inside EU?
Meanwhile, I just realized I have ordered sodium metal multiple times from eBay and it just came in ... |
12-11-2020 at 12:23
by: Fyndium |
1st hotplate stirrer
This has been gone through a few dozen times, but what are the criteria for good, credible hotplate ... |
12-11-2020 at 11:27
by: Fyndium |
Does methanol smell like anything to you?
Ethanol and methanol have much similarities but they are a tad different. I don't remember smelling ... |
12-11-2020 at 08:51
by: Fyndium |
what can you do without lab glassware
Depending on your resources, everything from soda bottles to self glass-blown stuff to pressure kett ... |
12-11-2020 at 05:13
by: Fyndium |
Can common soda glass bottles be reshaped?
Sounds like you could first melt the glass stock in your metal burner furnace, and then process it i ... |
12-11-2020 at 04:39
by: Fyndium |
Homemade and Repurposed Lab Gear
I could not find a shorter stem length thermowell, so I shortened one myself. It was just a shy too ... |
12-11-2020 at 01:52
by: Fyndium |
Benzaldehyde synthesis using aqueous nitric acid
I suppose the method works without big issues because the OP did so and even with 90%, not 10% HNO3. |
12-11-2020 at 01:32
by: Fyndium |
Are there borders for "hazardous material" inside EU?
You could ask Mario for an offer. Order something else you need alongside and keep up the good guy's ... |
11-11-2020 at 15:15
by: Fyndium |
Mass and Weight
I'm trying to determine the exact concentration of HNO3.
I have measured it using three scales: o ... |
11-11-2020 at 15:09
by: Fyndium |
Getting the sulfur smell out of glassware and reagent bottles
That's interesting and clever, actually. Toluene's practical insolubility makes washing it trivial w ... |
11-11-2020 at 13:20
by: Fyndium |
diethyl carbonate (NO PHOSGENE)
Sci-Hub takes care of paywalls, FYI. |
11-11-2020 at 13:12
by: Fyndium |
A slight problem...
It's probably the case. The moment I forget about some issue I have, I consider it's healed. I've go ... |
11-11-2020 at 13:10
by: Fyndium |
A slight problem...
I think I got exposed to NO2 too. 24h later, and I still got sore throat and sort of feeling in ches ... |
11-11-2020 at 12:17
by: Fyndium |
Benzaldehyde synthesis using aqueous nitric acid
I think I'll try to alter the reaction so that I first mix and heat the 10% HNO3 and nitrite to 90 a ... |
11-11-2020 at 11:24
by: Fyndium |
diethyl carbonate (NO PHOSGENE)
If you were in absolute need to do some hazardous work, make a fume hood from tarp or construction p ... |
11-11-2020 at 11:19
by: Fyndium |
Getting the sulfur smell out of glassware and reagent bottles
I recrystallized a sulfur compound from toluene once and when I recovered the toluene by redistillat ... |
11-11-2020 at 09:52
by: Fyndium |
Vacuum pump for vacuum distillation.
This is 1-phase pump.
My logic was that cold water, even through plastic membrane, is many times ... |
11-11-2020 at 08:00
by: Fyndium |
Vacuum pump for vacuum distillation.
For the record, I successfully used paraffin oil. I've also used it as joint grease.
How to cool ... |
11-11-2020 at 04:08
by: Fyndium |
The disappearance of cheap ebay laboratory glassware
Yep, about half of my stuff is 29 and half is 24, latter being more common recently. I pretty much r ... |
11-11-2020 at 03:54
by: Fyndium |
Are there borders for "hazardous material" inside EU?
It seems that MOQ is 1 ton for sodium metal and it costs a bit over $3000 + shipping. Round that to ... |
11-11-2020 at 03:48
by: Fyndium |
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