Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Chemical compound
Chromic acid is jargon for a solution formed by the addition of sulfuric acid to aqueous solutions of dichromate. It consists at least in part of chromium trioxide.[3]
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 (and a valence of VI or 6). It is a strong and corrosive oxidising agent and a moderate carcinogen.
^ abcNIOSH Pocket Guide to Chemical Hazards. "#0138". National Institute for Occupational Safety and Health (NIOSH).
^"Chromic acid and chromates". Immediately Dangerous to Life or Health Concentrations (IDLH). National Institute for Occupational Safety and Health (NIOSH).
^Greenwood, Norman N.; Earnshaw, Alan (1997). Chemistry of the Elements (2nd ed.). Butterworth-Heinemann. ISBN 978-0-08-037941-8.
reagent). Higher chromicacids with the formula H2CrnO(3n+1) are probable components of concentrated solutions of chromicacid. Chromicacid is an intermediate...
The Chromicacid cell is a type of primary cell which uses chromicacid as a depolarizer. The chromicacid is usually made by acidifying (with sulfuric...
1923 to protect Duralumin seaplane parts from corrosion. This early chromicacid–based process was called the Bengough–Stuart process and was documented...
traditional chromicacid bath for cleaning NMR tubes, because no traces of paramagnetic chromium can remain to spoil spectra. While chromicacid baths are...
chromium(VI) oxide or chromic anhydride) is an inorganic compound with the formula CrO3. It is the acidic anhydride of chromicacid, and is sometimes marketed...
classifies chloroformic acid as an inorganic compound) Boric acid forms borate esters , e.g. trimethyl borate (B(−O−CH3)3) Chromicacid forms di-tert-butyl...
These include nitric acid, perchloric acid, chloric acid, chromicacid, and concentrated sulfuric acid, among others. Oxidizing acids, being strong oxidizing...
decorative and hard plating, as well as bright dipping of copper alloys, chromicacid anodizing, and chromate conversion coating. A typical hexavalent chromium...
in the presence of sulfuric acid, followed by distillation. K2Cr2O7 + 6 HCl → 2 CrO2Cl2 + 2 KCl + 3 H2O The sulfuric acid serves as the dehydration agent...
world's largest producer of isophthalic acid is Lotte Chemical Corporation. In the laboratory, chromicacid can be used as the oxidant. It also arises...
also the anhydride of carbonic acid: H2CO3 → H2O + CO2 Chromium trioxide, which reacts with water forming chromicacid: CrO3 + H2O → H2CrO4 Dinitrogen...
hydrogen chromate ion may be protonated, with the formation of molecular chromicacid, H2CrO4, but the pKa for the equilibrium H2CrO4 ⇌ HCrO−4 + H+ is not...
benzene, including caraway oil or a mixture of cymene and cuminol with chromicacid. Although not commercially significant, there is also the so-called "Henkel...
oxide CrO 3, the acid anhydride of chromicacid, is sold industrially as "chromicacid". It can be produced by mixing sulfuric acid with dichromate and...
heated with a chromicacid solution it is oxidized to acetone. Alkaline potassium permanganate oxidizes it to α-hydroxyisobutyric acid, (CH3)2C(OH)-CO2H...
heating menthol with chromicacid, and its structure was later confirmed by synthesizing it from 2-isopropyl-5-methylpimelic acid. Menthone was crucial...
Look up chromic in Wiktionary, the free dictionary. Chromic means of, relating to, or containing chromium. ChromicacidChromic phenomenon Chromic anhydride...
Adding barium chromate enhances the life of the bath by adding to the chromicacid concentration. Barium chromate is an oxidizing agent, making it useful...
Sulfuric acid (American spelling and the preferred IUPAC name) or sulphuric acid (Commonwealth spelling), known in antiquity as oil of vitriol, is a mineral...
of a zinc anode in dilute sulfuric acid separated by a porous pot from a carbon cathode in nitric or chromicacid. The Bunsen cell is about 1.9 volts...
water. Examples include: Nitric acid, used in the Grove cell and Bunsen cell Chromicacid, used in the Chromicacid cell Manganese dioxide, used in the...
yields phenylacetylene (C6H5CCH). Chromicacid oxidizes it to benzoic acid; zinc and acetic acid reduce it to cinnamic acid, C6H5CH=CHCO2H, whilst sodium...
institutions and it should not be used routinely due to its dangers. Unlike chromicacid solutions, piranha does not contaminate glassware with Cr3+ ions. Piranha...
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