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what happens to over-whipped cream? It is well known in the (kitchen) literature that if you whip cream or eggs for too long, it becomes ... |
29-8-2020 at 16:15 by: CouchHatter |
Fume Hood Construction Your hood looks solid, Abromination. I missed your followup posts. Glad I could give you some good i ... |
29-8-2020 at 14:41 by: CouchHatter |
Separating flammable chemicals After finding this very nice pdf from Tennessee State Uni, I feel much better about my storage syste ... |
16-8-2020 at 18:39 by: CouchHatter |
Testing a fume hood? You can use a vaneometer to measure the face velocity at several points on the sash. They aren't too ... |
16-8-2020 at 18:05 by: CouchHatter |
Preparation of Mononitrotoluenes (o-, p-) By tweaking this reactions conditions, it is very easy to get a very different isomer makeup. Sounds ... |
12-8-2020 at 19:52 by: CouchHatter |
phosphoric acid titration I have some 85% phosphoric acid and wanted to titrate it. I've gone through all the numbers thrice a ... |
12-8-2020 at 18:42 by: CouchHatter |
jacketless condenser Sorry, I meant deschem. Friday was a long day for me. |
9-8-2020 at 04:53 by: CouchHatter |
jacketless condenser I actually spent about $15 on a 200mm from Chemglass. I did think of a vigreux, but I don't own one ... |
7-8-2020 at 20:21 by: CouchHatter |
jacketless condenser I am designing some apparatus for a microwave reactor and need a condenser without the jacket barbs. ... |
6-8-2020 at 17:30 by: CouchHatter |
Harbor freight Air Mover / Blower FRP is cheap and semi-resistant to most stuff. Fairly rigid. That's what I'd use if I didn't use met ... |
6-8-2020 at 17:27 by: CouchHatter |
microwave modifications
[quote]
As to testing the setup - you need a calibrated meter, which is expensive: the crappy met ... |
2-8-2020 at 16:03 by: CouchHatter |
Is there any trick to get stir bars to stay centered and spin on flat bottom flasks? A cross-shaped stirbar will fix this, at least it did for me. I thought my hotplate stirrer magnets ... |
27-7-2020 at 09:07 by: CouchHatter |
storing gas in water tank The volume pales in comparison to a cylinder, and to flush head space, you need a good minute of gas ... |
19-7-2020 at 19:08 by: CouchHatter |
Avoiding Explosions with Fumehood's Inline Fan -Spark Hazard Although not applicable for ductwork and a true in-line fan, I got around exposing mine to vapors by ... |
18-7-2020 at 17:13 by: CouchHatter |
plastic coated glass
It's funny you should say that Dr. Bob, it was very sticky! I thought it was residue from some sor ... |
18-7-2020 at 17:01 by: CouchHatter |
plastic coated glass When I was going through some chemical bottles that I obtained secondhand, after I removed a label, ... |
17-7-2020 at 13:58 by: CouchHatter |
Steam distillation tubing size? Consistent rate of steam generation matters more. I have used 5/16"ID to great success, but if the s ... |
10-7-2020 at 03:58 by: CouchHatter |
Polypropylene funnel considerations I've used mine with 52% nitric acid and not noticed any staining. I also poured 40 mL sulfur chlorid ... |
6-6-2020 at 09:20 by: CouchHatter |
chlorine generator vs HCl generator I have a supply of pool chlorinating tabs, and so I am more interested in the reaction between HCl a ... |
1-6-2020 at 14:54 by: CouchHatter |
Worries about Cl in small scale electrolysis It can be neutralized with a NaOH trap, but I'm not familiar with electrolysis. Unless you're workin ... |
28-5-2020 at 19:29 by: CouchHatter |
Acetone storage? Not sure what bottle sizes you think are small - do you need 1 or 4 liters for "small reactions"? My ... |
23-5-2020 at 19:53 by: CouchHatter |
Newe YouTube Video: Methyl Iodide Synthesis with Aluminum Foil Cool that you're putting yourself out there! If everything went according to plan it wouldn't be as ... |
20-5-2020 at 20:23 by: CouchHatter |
Worried that police are intercepting my packages, worried about knock on door. Or just COVID-19 shipping delays? I'm all for reusing containers, but IIRC, purposely mislabeled chemicals is a big red flag for any v ... |
9-5-2020 at 17:33 by: CouchHatter |
digging a hole with explosives Excellent and informative suggestions. From the other post about tree toppling, Vomaturge says that ... |
19-4-2020 at 09:06 by: CouchHatter |
digging a hole with explosives I wonder if anybody has used an explosive they made for excavation of rocks or trees. I'm reading th ... |
17-4-2020 at 14:16 by: CouchHatter |
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