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Any method to convert potassium dichromate to ammonium dichromate? Convert it in to potassium chromate with KOH and then make ammonium chromate by fractional crystalli ...	6-12-2019 at 12:56 by: Bedlasky
Masking of nitrite during nitrate determination With nitrite free standard it was ok. But we have in work samples contain both - nitrite and nitrate ...	26-11-2019 at 09:02 by: Bedlasky
Masking of nitrite during nitrate determination Hi. I tried to determinate nitrate spectrophotometrically as 4-nitro-2,6-dimethylphenol. I had st ...	26-11-2019 at 00:14 by: Bedlasky
How strict are you about using distilled water vs nondistilled/faucet water in your reactions? For test tube reactions I use tap water in most of cases. Here is soft water with high content of Fe ...	22-11-2019 at 17:49 by: Bedlasky
Christmas is approaching , any ideas ? Blue bottle reaction, chemical chameleon and Briggs-Rauscher reaction are beautiful colour-changing ...	20-11-2019 at 10:44 by: Bedlasky
Energetic precipitate from the reaction of ascorbic acid/Cu(II) and sodium nitrite If it is soluble in ammonia, try reducing by nascent hydrogen in alkaline media (as a source of hydr ...	18-11-2019 at 08:13 by: Bedlasky
Pink salicylic acid solution [rquote=626367&tid=154314&author=rockyit98][rquote=626359&tid=154314&author=Bedlasky ...	18-11-2019 at 07:25 by: Bedlasky
Pink salicylic acid solution I read on the internet that Fe3+ complex with salicylic acid is blue.	17-11-2019 at 13:04 by: Bedlasky
Pink salicylic acid solution I found one topic on sciencemadness about it: [url=http://www.sciencemadness.org/talk/viewthread. ...	16-11-2019 at 11:10 by: Bedlasky
Energetic precipitate from the reaction of ascorbic acid/Cu(II) and sodium nitrite Very interesting compound! I found some material about Cu-nitrosyl, peroxynitrite and nitro complexe ...	16-11-2019 at 11:08 by: Bedlasky
Nitrite in acidic solution Reagents are aminonaphtalenesulfonic acid and sulfanilic acid.	16-11-2019 at 11:00 by: Bedlasky
Nitrite in acidic solution Hi. We had in work today acidic sample which contains lots of nitrite. I was surprised because ni ...	11-11-2019 at 11:33 by: Bedlasky
Pink salicylic acid solution I prepared it just by simply dissolving of salicylic acid in methanol. Salicylic acid was p.a. qu ...	11-11-2019 at 11:16 by: Bedlasky
Pink salicylic acid solution Hi. I prepared solution of salicylic acid in methanol in the work for several times and it always ...	10-11-2019 at 12:01 by: Bedlasky
Synthesis of sodium thiocyanate. If I know thiocyanates are produce in laboratory by heating potassium ferrocyanide with sulfur.	21-9-2019 at 12:33 by: Bedlasky
Gassing myself with hydrogen sulphide... Laboratory assistant from my former school was once (few decades back) bubbling H2S gas through NaOH ...	20-9-2019 at 13:58 by: Bedlasky
Ethyl acetate and butyl acetate uses and storage It seems you don't understand me. I know that CrO5 is unstable. In organic solvent is more stable. I ...	20-9-2019 at 06:18 by: Bedlasky
Ethyl acetate and butyl acetate uses and storage I know that CrO5 is unstable. But in organic solvent is far more stable than in water. I once try se ...	20-9-2019 at 01:48 by: Bedlasky
Sensitive test for gold [rquote=623160&tid=154025&author=Tsjerk]Nice test, but isn't it a disadvantage it also react ...	18-9-2019 at 14:56 by: Bedlasky
Sensitive test for gold Hi. I read in the book about testing for gold with TiCl3. So I decided to test it and it works re ...	18-9-2019 at 13:11 by: Bedlasky
Ethyl acetate and butyl acetate uses and storage Hi. I want some ethyl acetate and butyl acetate to stabilizing CrO5. But the smallest bottle whic ...	13-9-2019 at 21:44 by: Bedlasky
SbCl3 + Na2S2O3 = something interesting + corrosive fumes of what? Teodor: Where you get Sb2O3?	12-9-2019 at 08:51 by: Bedlasky
Malonic acid Hi. Exist any common source of malonic acid? I don't know where I find this acid - on the interne ...	12-9-2019 at 08:47 by: Bedlasky
Elemental sulfur from sulfates? [rquote=622563&tid=153772&author=hodges]So maybe the same thing would work with SO2, which c ...	9-9-2019 at 23:16 by: Bedlasky
Elemental sulfur from sulfates? [rquote=622532&tid=153772&author=Alkoholvergiftung] If you use Ironsulfate it will go at ro ...	9-9-2019 at 08:15 by: Bedlasky
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