11 replies to this topic

[CCH Concepts]

I have brought so lab grade 99% acetic acid.

I added BaCO2 and no reaction, not even the slightest fizz!!

I tried heating, nothing.

Where did I go wrong, I thought this would produce CO2 leaving Barium acetate.

[phildunford]

I'm not an expert, but to make nitrate from the carbonate (with nitric acid obviously!) it works better with the dilute acid & takes a long time to go to completion.

Worth a try with dilute?

[a_bab]

This is really odd. It should have fizzed and foamed like crazy.

Try with regular household vinegar first; one other possibility is that you may not have the carbonate but the sulphate instead? Try with a stronger acid (although it's not needed) like hydrochloric acid just to make sure you've got carbonate.

[CCH Concepts]

I have sulphuric and nitrate acid I'll give them ago

[Arthur Brown]

Conc acetic acid behaves more as an organic solvent, as soon as you add it to water and make say 25% acid you get a different series of reactions including the usual and expected acetate reactions.

Add say 5ml of glacial/conc acetic to 15ml (water that's about 25%) REMEMBERING TO ADD ACID to water! Use appropriate PPE eyes face hands clothing etc.

[CCH Concepts]

Sounds like a plan, how would you say the best way to get the purest barium acetate and separate out the residue carbonate?

[pyrotrev]

Sounds like a plan, how would you say the best way to get the purest barium acetate and separate out the residue carbonate?

Filter it - BaCO3 is pretty insoluble.

[a_bab]

BaCO3 is very insoluble, on par with limestone.

What do you need barium acetate anyway? I have some, but it looks like copper sulphate, only green, so it looks hygroscopical.

[CCH Concepts]

Just curiosity, playing with different metal salts, seeing if I can get it to act as an oxidiser or if due to the carbon content only a fuel.

Ganna try the same with strontium. I'm also curious to see how well it would proform as Angkor colour donor with copper.

I intend to do the same for a variety of organic acids.

Is there an organic acid that contains chlorine?

[a_bab]

There are many organic acids containing chlorine, all derived from "regular" acids, by the addition of chlorine which replaces one or several hydrogen atoms; perhaps the best very known one would be chloroacetic acid. These are generally nasty, corrosive and usually quite toxic chemicals. They are also watched as most are precursors to CW chems.

Are you having in mind salts of organic chloro acids + Ba, Sr?

[MDH]

Not easily available... There is sodium pentachlorophenate, used by agriculture - a bit of research suggests stable chlorinated organic acids are frequently used as algaecides (This is of course excluding various chlorocyanates used in swimming pools which are meant to decompose in water)... I can't think of what could possibly be cheaply and easily made from at-home synthesis that is also stable.

My hat off to anybody who can think of a commonly available acid which can be chlorinated and remain without being hygroscopic as well.

Edited by MDH, 18 August 2010 - 06:52 PM.

[CCH Concepts]

I'm thinking find a chlorinated organic acid, then obtain metal salt ie barium.

So depending on make up thus salt could act as

Colour donor, chlorine donor and fuel

Or
Colour donor, chlorine donor and oxidiser.