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UNBELIEVABLY CHEAP microscopes I filed my complaint with ebay following their procedure, and was all prepared to have to wait a cou ...	28-7-2019 at 16:41 by: CharlieA
Useful reference books in the lab RedDwarf's favorites are good choices. I like Lange's "Handbook of Chemistry." I have the 15th editi ...	23-7-2019 at 15:38 by: CharlieA
Can MgSO4 be used as a drying agent for MeI? I don't understand what dimethyl sulfate has to do with it? Yes, anhydrous MgSO4 or anhydrous Na2SO ...	21-7-2019 at 16:55 by: CharlieA
Which number you like more: 1.99 vs 2.01? If you are doing scientific calculations, it does not matter which you would prefer to occur. It onl ...	21-7-2019 at 16:33 by: CharlieA
Tired of reporting spam Really great. New spam is being posted faster than I can delete it. Is there a macro to make reporti ...	21-7-2019 at 16:24 by: CharlieA
Mass and Weight Sulaiman: ambitious and very worthwhile project. I remember how pleased I was when I learned to use ...	18-7-2019 at 16:31 by: CharlieA
How accurate are solution density measurements? I have used a 10 ml Class A volumetric flask and a balance reading to 1 mg, with decent (for me, any ...	18-7-2019 at 16:09 by: CharlieA
Is there a graph/formula of temperature increase vs amount of H2SO4 added to water? @Ubya: Bravo! Thanks for the pdf. I found it a good refresher for long forgotten information! Charl ...	7-7-2019 at 17:45 by: CharlieA
I found that elemental boron is inert to this aggressive chemical bulldozer [rquote=615606&tid=151239&author=Tsjerk]You would think that someone with over 1400 posts wo ...	18-6-2019 at 17:09 by: CharlieA
Collecting aquatic critters Microscopists use a drop or so of 1.5% methylcellusolve to slow them down. I might try a drop of (di ...	10-6-2019 at 16:31 by: CharlieA
Pottery grade materials purity (NiO and K2Cr2O7) If you know the manufacturer(s) of these compounds, perhaps you can get the MSDS/SDS for them to get ...	3-6-2019 at 17:04 by: CharlieA
The antidote to modern chemistry textbooks Contemporary textbooks in chemistry seem have adopted the notion that “more is better”; the book ...	3-6-2019 at 17:00 by: CharlieA
Why can't thionyl chloride be used to chlorinate oxalic acid to oxalyl chloride? Test for phosgene from my prior laboratory experience: it smells like new-mown hay. THIS IS NOT A RE ...	17-5-2019 at 13:07 by: CharlieA
Sulfur experiment ideas Why is it that a chemistry teacher can't figure out what to do (safely; not too exotically) with the ...	17-5-2019 at 13:03 by: CharlieA
Reaction Kinetics @Metacelsus: "Great minds travel the same paths!"	16-5-2019 at 12:00 by: CharlieA
Reaction Kinetics Are you "biting off more than you can chew"? I can offer only a general method; the specific implem ...	16-5-2019 at 11:57 by: CharlieA
Organic Building Blocks Alfa's definition of organic building blocks pretty much covers every organic compound known to man. ...	16-5-2019 at 11:51 by: CharlieA
Help wanted ... calibrating a 2kg F1 calibration weight. How about calibrating all of your M-class weights to one of them designated as "MSM" (My standard ma ...	16-5-2019 at 11:40 by: CharlieA
Liner Alkanes to cycloalkanes I assume "liner" means linear. You apologize for spelling but don't bother to correct it. I think an ...	16-5-2019 at 11:34 by: CharlieA
Do we need a separtate forum for lab safety and waste treatment? ditto	15-5-2019 at 12:09 by: CharlieA
WHAT IF: (xkcd style question) Bigger than 2 swimming pools? I can't believe that an estimate of the total amount of iron/iron ore ...	14-5-2019 at 12:59 by: CharlieA
Eye damage? Have you consulted and had an examination by an ophthalmologist? I think that would be a prudent cou ...	14-5-2019 at 12:42 by: CharlieA
tannin source Woodworkers "ebonize" (stain black) oak and other woods, by brushing on a solution of iron acetate m ...	11-5-2019 at 13:46 by: CharlieA
What happens to bonding during nuclear decay? @opfromthestart: Interesting discussion. I have never considered the original question. I have learn ...	3-5-2019 at 16:42 by: CharlieA
Dehydratation of FeO(OH) and CaSO4 [rquote=611204&tid=149076&author=oberkarteufel]No, it's not a typo. This compound contains i ...	2-5-2019 at 17:18 by: CharlieA
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