The term chromic acid is usually used for a mixture made by adding concentrated sulfuric acid to a dichromate, which may contain a variety of compounds, including solid chromium trioxide. This kind of chromic acid may be used as a cleaning mixture for glass. Chromic acid may also refer to the molecular species, H2CrO4 of which the trioxide is the anhydride. Chromic acid features chromium in an oxidation state of +6 (or VI). It is a strong and corrosive oxidising agent.Read more here.
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 or chromosulfuric acid) 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 chromic ions — Cr(III) — that can interfere with certain applications, such as NMR spectroscopy. This is especially the case for NMR tubes. Chromic acid was widely used in the instrument repair industry, due to its ability to "brighten" raw brass. 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. It was used in hair dye in the 1940s, under the name Melereon. It is used as a bleach in black and white photographic reversal processing.Read more here.
For chromic acid (USEPA/OPP Pesticide Code: 021101) ACTIVE products with label matches. /SRP: Registered for use in the U.S. but approved pesticide uses may change periodically and so federal, state and local authorities must be consulted for currently approved uses. Chemicals (chromates, oxidizing agents, catalysts), chromium-plating, intermediate, medicine (caustic), process engraving, anodizing, ceramic glazes, colored glass, metal cleaning, inks, tanning, paints, textile mordant, etchant for plastics. ABS etchant, photographic chemical; aluminum anodizing reagent; chrome electroplating/zinc colorless conversion coatings reagent; side-chain oxidation reagent. Wood preservative.Read more here.
Chromic acid is a commonly used glassware cleaning reagent. It is prepared in a one liter container by dissolving 60 grams of potassium dichromate in approximately 150 mls of warm distilled water and then slowly adding concentrated sulfuric acid to produce a total volume of one liter Chromic Acid solution.Read more here.
Chromic acid is a strong oxidizer (reacts with organic material) that it is used to clean glassware with stubborn organic stains. The chromic acid dissolves the organic material and actually removes a thin layer of the glass. It also can cause severe chemical burns when it comes in contact with the skin.Read more here.
1.1 Hexavalent baths. Chromium plating is traditionally made from a solution of chromic acid (CrO3 which forms H2CrO4 after dissolving in water) and sulfuric acid (H2SO4) using insoluble anodes. The chromium is reduced to metal from the hexavalent state due to the catalytic effect of sulfate ions.Read more here.
Chromic Acid should be handled as a CARCINOGEN-- WITH EXTREME CAUTION. * Chromic Acid can cause reproductive damage. Handle with extreme caution. Chromic Acid is a CORROSIVE CHEMICAL and contact can severely irritate and burn the skin and eyes with possible eye damage.Read more here.