File:ChromicAcid.svg · Wikimedia Commons · See Wikimedia Commons
chromic acid
Sign in to saveAlso known as Dihydroxidodioxidochromium, Chromic(VI) acid, Tetraoxochromic acid, Sternochromicmaxidochorodium, [CrO2(OH)2], H2CrO4
chemical compound
Chemical data
- Formula
- CrH2O4
- Molecular weight
- 118.01 g/mol
- IUPAC name
- dihydroxy(dioxo)chromium
- SMILES
- O[Cr](=O)(=O)O
- InChIKey
- KRVSOGSZCMJSLX-UHFFFAOYSA-L
- Polar surface area
- 74.6 Ų
- H-bond donors
- 2
- H-bond acceptors
- 4
- Formal charge
- 0
via PubChem
Wikidata facts
- Mass
- 117.936
Show 9 more facts
- immediately dangerous to life or health
- 15
- canonical SMILES
- O[Cr](=O)(=O)O
- decomposition point
- 482
- NIOSH Pocket Guide ID
- 0138
- solubility
- 63
- time-weighted average exposure limit
- 0.0002
- chemical formula
- CrH₂O₄
- melting point
- 197
- Commons category
- Chromic acid
Sources (6)
via Wikidata · CC0
~7 min read
Article
Chromic acid is a chemical compound with the chemical formula H2CrO4. More generally, it is the name for a solution formed by the addition of sulfuric acid to aqueous solutions of dichromate. It consists at least in part of chromium trioxide.
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 oxidizing agent and a moderate carcinogen.