chenbeier

I didn't said to take conc. Sulfuric. As already mentioned a 25% acid like used in car batteries should be efficient. The reaction with copper doesn't matter, because both alloys contain Cu. It is to check is tin or zinc present.

Bronze is a alloy of copper and tin, brass is a alloy of copper and zinc. With a drop of hydrochloric or sulfuric acid zinc will react with it, create hydrogen bubbles. Tin and copper show no visible reaction. With nitric you can develop unsoluble SnO2 with the bronze. Brass will be resolved without residues.

First you dont have Chlorine dioxide as powder, because it's a gas. You have a salt what can release chlorinedioxide if dissolved in water. Or you can purchase ready for use solutions. What is written on your bag?

Where you get the sodium methoxide as reactant. It's one of the product. The reactans are the Ester, sodium and dimethylsulton. 2 CH3SO2CH3 + 2 Na => 2 CH3SO2CH2- + 2 Na+ + H2 RCO-OCH3 + CH3SO2CH2- => RCO-CH2SO2CH3 + CH3O-

First why you post your text twice. I don't agree, if you use NaOH, and get water, how you connect the Sulton? Not possible then.

Why not use only water as recommendation. But if you want use chemicals for it, glycols any kind can be used. I would recommend glycerol.

Formic acid is HCOOH. It is one chemical. There is no composition. What do you mean with composition, maybe the ants produce other stuff together with the forming acid.

R-(C=O)-R' is called ketone if R,R' is alkyl or aryl. CH3COCH2CH3 Butanone If R,R' is an O then it's an ester CH3CO-OCH3 Methylacetate (CH3CO)2CO Dimethylcarbonate and R,R' is N then it's an amid, special an urea derivate in the case of cytosine. NH2CONH2 urea CH3CON(CH3)2 Dimethylacetamid

Autolyzed yeast extract is a flavoring agent made from yeast, usually the same kind used to make bread rise or ferment beer. Generally, the yeast is heated or otherwise killed in a way that allows enzymes inside the cells break down the yeast, including the proteins.

Boil the solution, after cool down filter it, so you get a saturated solution. Settle down is also option, but difficult to decant the solution.

It was (is) a common process before electrolysis was invented. https://www.elettronicaveneta.com/en/prodotto/cb-in-103-ev-preparation-of-sodium-hydroxide-by-caustification-of-carbonate/

I think there is an error . CH3SO2 is wrong. It is sodium and Dimethylsulfon (CH3)2SO2 as reactant this forms the CH active sodium salt CH3SO2CH2- + Na+. This will attack the Ester and the Methanolate will be pushed out. No water involved. RCO-OCH3 + CH3SO2CH2- => RCO-CH2SO2CH3 + CH3O- This will be neutralised with mild acid.

I think you can only add a solubilizer to make a emulsion.

That is what he is doing. In solution you have Na+, K+ and the [OOCCHOHCHOHCOO]2 - present. It doesn't matter you add NaOH or KOH first to the tartratic acid. Also possible you mix 1 mol sodium tartrate with 1 mol potassium tartrate in solution.

Sounds ok

What is 1020's. Do you mean 1920's, do you.

Smell like vodka is ethanol. Smell like air in hospital is isopropanol.

Yes you can use it.

Methylated spiritus, the same what is used for camping cooler.

1. Addition of bromine 2. Saponification of Ester 3. Elimination of bromine and CO2

Mesoxalic acid can be obtained synthetically by hydrolysis of alloxan with baryta water,[2] by warming caffuric acid[3] with lead acetate solution,[2] or from glyceryl diacetate and concentrated nitric acid in ice-cold water. The product can be obtained also by oxidation of tartronic acid[4] or glycerol.[5] Since they are carried out in water, these procedures generally give the dihydroxy derivative. It is also prepared by the oxidation of glycerol with the help of bismuth(III) nitrate. References Merck Index (12th ed.). p. 5971. Henry Enfield Roscoe (1888), A Treatise on Chemistry, volume 3, part2 Organic Chemistry, p. 161. D. Appleton and Co., New York The chemical structure of caffuric acid was given in Allen, W. F. (1932). The preparation and pyrolytic molecular rearrangment [sic] of the 8-ethers of caffeine: And their conversion to 8-methyl and 8-ethylcaffeine. Ann Arbor, Mich.: Edwards Brothers. Rosaria Ciriminna and Mario Pagliaro (2004), Oxidation of tartronic acid and dihydroxyacetone to sodium mesoxalate mediated by TEMPO. Tetrahedron Letters, volume 45, issue 34, pp. 6381–6383 doi:10.1016/j.tetlet.2004.07.021 Rosaria Ciriminna and Mario Pagliaro (2003), One-Pot Homogeneous and Heterogeneous Oxidation of Glycerol to Ketomalonic Acid Mediated by TEMPO. Advanced Synthesis & Catalysis, volume 345, issue 3, Pages 383–388. doi:10.1002/adsc.200390043

https://images.app.goo.gl/RtqgCgdzHrNWMcpp9 https://images.app.goo.gl/48aDjbimwyGXnR3o8 Corrosion

That is your experience, I have another one. Old Lithiumcells get a white residue coming out the battery.

Of course yes, like every battery it will corrode and can harm electronically devices.