Potassium Acetate Solution Bichromate

There are direct dyes the wash-fastnesses of which are improved by after-treatment with potassium bichromate in the following maimer. Immerse for 20 to 30 minutes at 60° to 80°C (140° to 180°F) in a solution containing 1 to 3 per cent of potassium or sodium bichromate and 1 to 2 per cent of acetic acid (30 per cent). Fastness to light as well as washing is sometimes improved by substituting 1 to 2 per cent of bichromate, 1-2 per cent of copper sulphate, and 2-4 per cent of 30 per cent acetic acid. 

Saccharic acid is used in connection with potassium bichromate in mordanting cloth. It forms a well characterized acid potassium salt which is precipitated when a strong solution of the acid is treated with potassium acetate the reaction is now being used in connection with the identification of glucose. 

BICHROMATE of SODA (10588-01-9) A strong oxidizer. Reacts violently with reducing agents, acids, acetic anhydride, hydrazine, combustible materials, organic substances, metal powders. Reacts with acrolein, antimony trisulfide, antimony tritelluride, arsenic pentasul-fide, 1,1-dichloro-l-nitroethane, 1,3-dichloropropene, diethylamine, fluorine, hydrazine, potassium iodide, sodium tetraborate, sodium tetraborate decahydrate, sodium borohydride, zirconium dusts, i-trioxane. Incompatible with ra-bis(trichlormethyl)benzene, hydroxy-lamine. Aqueous solution is caustic incompatible with acids, alcohols, aldehydes, alkylene oxides, cresols, caprolactam solution, epichlorohydrin, organic anhydrides, glycols, maleic anhydride, phenols. Attacks aluminum copper, brass, bronze, tin, zinc, especially in the presence of moisture. 

The salt obtained by evaporating the solution to dryness is called gray acetate of lime. Commercial acetic acid is obtained from the calcium acetate so prepared by distilling with concentrated hydrochloric acid in copper stills. The acid is a slightly-colored liquid which contains about 50 per cent of acetic acid. It may be further purified by redistilling over a little potassium bichromate, which oxidizes some of the impurities, and by filtering through charcoal. 

Plating solution, chrome Potassium acid sulfate Potassum alum Potassum aluminum sulfate Potassium bicarbonate Potassium bichromate Potassium bifluoride Potassium bisulfate Potassium bisulfite Potassium bitartrate Potassium bromide Potassium carbonate Potassium chlorate Potassium chloride Potassium chromates Potassium citrate Potassium cyanate Silicone tetrachloride, dry Silicone tetrachloride, wet Silver bromide Silver chloride Silver cyanide Silver nitrate Silver sulfate Soap solutions Soda ash Sodium acetate Sodium benzoate Sodium bicarbonate Sodium bichromate Sodium bifluoride Sodium bisulfate Sodium bisulfide Sodium bisulfite Sodium borate Sodium bromate Sodium bromide Sodium carbonate... 

It is therefore recommended to add sodium nitrite solution before using acid for destruction of unwanted LA (or also sodium azide) residues in the laboratory or even in industrial applications [3, 5, 21]. Urbahski recommends the use of 8 % solution of sodium nitrite and 15 % nitric acid for LA [30], whereas 92 % sulfuric acid is recommended for sodium azide [5]. Many other reactions have been proposed for the decomposition of LA, including reaction with sodium polysulfide [21] or dissolving LA in ammonium acetate and adding sodium or potassium bichromate until no more lead chromate precipitates [5],... 

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