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99.5-100.5% Pure! [rquote=619547&tid=152727&author=wg48temp9][rquote=619513&tid=152727&author=Heptylen ...	3-8-2019 at 02:10 by: Heptylene
99.5-100.5% Pure! I found a nice reference book on uncertainties: [url=https://www.eurachem.org/index.php/publications ...	2-8-2019 at 12:41 by: Heptylene
Chemical Removal of Copper from Graphite Gouging Rods 1M H2SO4 + some H2O2 should work very well. CuCl2/HCl should work well too, but might leave some Cu ...	2-8-2019 at 04:47 by: Heptylene
What is phosgene/phosphine? [rquote=619309&tid=152659&author=fusso]I can't believe someone with >400 posts would ask ...	31-7-2019 at 09:40 by: Heptylene
What dimmer to use with Glas-Col heating mantle in Europe For my tube furnace with a similar power output I'm using one of those ebay dimmers, supposedly rate ...	4-7-2019 at 00:39 by: Heptylene
How accurate are solution density measurements? @brubei: Your approach only takes into account the random error right? As you said you would also ...	21-6-2019 at 02:21 by: Heptylene
How accurate are solution density measurements? The density \(\rho\) of a sample is calculated from its mass \(m \pm \delta m\) and volume \(V \pm \ ...	20-6-2019 at 06:02 by: Heptylene
How to clean a separatory funnel? You could try hot sodium persulfate + 254 nm UV (from a germicidal lamp). It cleans glass very well ...	17-6-2019 at 06:08 by: Heptylene
Synthesis for hydrolaxamine to ketamine We don't "give" people methods to "convert" things here. Do some research, show you're interested in ...	12-6-2019 at 05:46 by: Heptylene
Non-friable high temp fabric options? Carbon fiber maybe?	7-6-2019 at 06:00 by: Heptylene
Whats the best way to obtain Sodium Bisulfite NaHSO3? Which aldehyde is it you want to purify exactly? Without that information I can't tell you anything. ...	1-6-2019 at 09:48 by: Heptylene
Whats the best way to obtain Sodium Bisulfite NaHSO3? Apparently you have an equilibrium between metabisulfite and bisulfite in water: Na2S2O5 + H2O <- ...	1-6-2019 at 06:26 by: Heptylene
Whats the best way to obtain Sodium Bisulfite NaHSO3? @netnofeels: I have extracted cinnamaldehyde from cinnamon bark oil by making the bisulfite adduct. ...	1-6-2019 at 06:03 by: Heptylene
H2O2 as O2 source for propane/acetylene torch? Yeah feeding pure oxygen into a compressor full of oil sounds like a recipe for a massive explosion. ...	31-5-2019 at 11:29 by: Heptylene
[Lab] Setup [opinions?] [rquote=613488&tid=150373&author=DavidJR] I had one just like that, but it died recently - ...	25-5-2019 at 05:21 by: Heptylene
[Lab] Setup [opinions?] Be careful no to make the bikes rust if you handle HCl and such. Also is that a KNF vacuum pump I ...	24-5-2019 at 12:11 by: Heptylene
Anyone have a hotplate/stirrer they could part with? Nurdrage made a video on making your own temperature sensor (PT-1000 I think) for hotplate that supp ...	17-5-2019 at 07:44 by: Heptylene
Help wanted ... calibrating a 2kg F1 calibration weight. [rquote=612777&tid=150069&author=unionised]Just a thought. Imagine some kind soul offers to ...	17-5-2019 at 07:41 by: Heptylene
Help wanted ... calibrating a 2kg F1 calibration weight. Damn 20£! A chunk of stainless that size is probably worth more, let alone a calibration weight, ev ...	15-5-2019 at 15:06 by: Heptylene
Identification of a mystery metal [rquote=611527&tid=149463&author=phlogiston]I remember a thread where someone found a myster ...	4-5-2019 at 13:08 by: Heptylene
God should've blessed Earth with more precious metals I think we are blessed to have iron and aluminum among the most abundant metals on earth. Aluminu ...	4-5-2019 at 05:47 by: Heptylene
First yield of KClO3 from my cell [rquote=610321&tid=148990&author=markx]Well done! The dichromate additive can be omitted for ...	25-4-2019 at 03:35 by: Heptylene
Accurate Constants Have you tried [url=https://www.nist.gov/pml/atomic-weights-and-isotopic-compositions-relative-atomi ...	24-4-2019 at 01:46 by: Heptylene
First yield of KClO3 from my cell [rquote=610170&tid=148990&author=fusso]Why not just electrolyse KCl at the beginning to save ...	24-4-2019 at 01:44 by: Heptylene
Round bottom flask vs 'round bottom flask with flat bottom' Nice colors! As long as they are borosilicate you should be fine, chemplayer has used flat bottom fl ...	24-4-2019 at 01:40 by: Heptylene
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