Chromic Acid

Chromic Acid Product Variant


Chromic acid include of acid substances, generally refers to a collection of compounds generated by the acidification of solutions containing chromate and dichromate anions or the dissolving of chromium trioxide in sulfuric acid. Often the species are assigned the formulas H2CrO4 and H2Cr2O7. The anhydride of these "chromic acids" is chromium trioxide, also called chromium (VI) oxide; industrially, this compound is sometimes sold as "chromic acid." Chromic acid forms are usually as chromic acid flake or chromic acid powder. Chromic acid flake form usually as technical practice and powder use for analytical purpose.Chromic acid is formed from chromium substance that react with water become chromic acid.

chromic acid flake is usually purposed for technical
Chromic Acid Flake

chromic acid powder usually use for analytical purpose
Chromic acid powder


Chromic acid is very soluble in water, chromium acid have unlimited solubility in water, the color of this chemicals is red brown in solid state or called as chromic acid flake. The solution color in water is red. Because chrome itself is metal after dilute in water this chrome can attract by negative pole of electric current. The solution of chromic acid flake called as chromic acid. As on solid state chromium acid have formula CrO3 and after dilute in water the formula become H2CrO4.

Chromic acid is an intermediate in chromium plating, and is also used in ceramic glazes, and colored glass. Because a solution of chromic acid in sulfuric acid (also known as a sulfochromic mixture) is a powerful oxidizing agent, it can be used to clean laboratory glassware, particularly of otherwise insoluble organic residues. This application has declined due to environmental concerns. Furthermore the acid leaves trace amounts of paramagnetic ions Cr(III) and Cr(V) that can interfere with certain applications, such as NMR spectroscopy. This is especially the case for NMR tubes.

Chromic acid has also been widely used in the band instrument repair industry, due to its ability to "brighten" raw brass using bright chromium plating technique. A chromic acid dip leaves behind a bright yellow patina on the brass. Due to growing health and environmental concerns, many have discontinued use of this chemical in their repair shops.

Hexavalent chromium compounds are toxic and carcinogenic. For this reason, chromic acid oxidation is not used on an industrial scale. On working with this chemical must use a hands glove, glass, and special masker, because fume of this chemical is carcinogenic. I my selves use this chemical just for experiment and not use in long time duration. For people that work on this chemicals environment must discipline for use safety equipment as describe above.

On use this substance see MSDS Chromic Acid first for your safety.

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