chromic acid

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  • noun

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an unstable acid known only in solution and as chromate salts

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References in periodicals archive ?
The 2 million [pounds sterling] project will look for alternatives to chromate epoxy primers, chromic acid anodising, the use of allochrome and hard chrome plating.
Chromium sulphate was converted to chromic acid in sulphuric acid by using lead dioxide anodes containing 5% Sb.
The adhesion of PMSQ films was improved on polymethylmethacrylate (PMMA), polycarbonate (PC), and PC/acrylonitrile butadiene styrene (ABS) by pretreating their surface with O2 plasma or chromic acid followed by surface grafting with trimethyl ethoxysilane (TMES).
A North Wales fire and rescue service spokeswoman said: "500 litres of sulphuric acid and chromic acid came out of containers into a bunded, metal, treatment area.
chlorine, caustic soda, perchlorates, persulphates, hypochlorite, chlorate, permanganate, bromate, fluoride, ferricyanide, chromic acid regeneration etc.
They investigated a commercial pretreatment on galvanized steel that gave corrosion resistance similar to that provided by zinc phosphate with a chromic acid rinse.
Industrial uses of hexavalent chromium compounds include chromate pigments in dyes, paints, inks, and plastics; chromates added as anticorrosive agents to paints, primers, and other surface coatings; and chromic acid electroplated onto metal parts to provide a decorative or protective coating.
Determination of total organic C in soils by an improved chromic acid digestion and spectrophotometric procedure.
Production of leather tanning products and chromic acid used in timber treatment and electro-plating was ceased as a result.
Typical CCA formulations are commonly prepared by first dissolving chromic acid in water and then adding copper oxide and arsenic acid as solids to the chromic acid solution.
They include cyanide, chromic acid and nickel sulphate -all potentially lethal if released into the atmosphere.
Do not confuse Alodine with AMS-M-3171, Type VI, chromic acid brush-on treatment, which is used on magnesium.
Among the chemicals used are sodium cyanide, potassium cyanide, chromic acid and sodium dichromate.
Gauthier explains that the chromic acid the company uses is a hazardous chemical.
Current practice calls for the parts to be plated with zinc, and then dipped in a chromic acid solution.