Chromium(III) phosphate

Chromium(III) phosphate
Names
IUPAC name
Chromium(III) phosphate
Other names
Chromium phosphate, Chromium monophosphate, Chromium orthophosphate, Chromic phosphate
Identifiers
3D model (JSmol)
ChemSpider
ECHA InfoCard 100.029.219 Edit this at Wikidata
EC Number
  • 232-141-0
UNII
  • InChI=1S/Cr.H3O4P/c;1-5(2,3)4/h;(H3,1,2,3,4)/q+3;/p-3
    Key: IKZBVTPSNGOVRJ-UHFFFAOYSA-K
  • [O-]P(=O)([O-])[O-].[Cr+3]
Properties
CrPO4
Molar mass 146.97 g/mol
Density 4.236 g/cm3[1]
Melting point 1,907 °C (3,465 °F; 2,180 K)[1]
Boiling point 2,671 °C (4,840 °F; 2,944 K)
insoluble, exothermal blue solution[1]
Structure
monoclinic[1]
Hazards
NIOSH (US health exposure limits):
PEL (Permissible)
TWA 1 mg/m3[2]
REL (Recommended)
TWA 0.5 mg/m3[2]
IDLH (Immediate danger)
250 mg/m3[2]
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Chromium(III) phosphate describes inorganic compounds with the chemical formula CrPO4·(H2O)n, where n = 0, 4, or 6. All are deeply colored solids. Anhydrous CrPO4 is green. The hexahydrate CrPO4·6H2O is violet.

  1. ^ a b c d Brauer, Georg (1965) [1962]. Handbuch Der Präparativen Anorganischen Chemie [Handbook of Preparative Inorganic Chemistry] (in German). Vol. 2. Stuttgart; New York, New York: Ferdinand Enke Verlag; Academic Press, Inc. p. 1341. ISBN 978-0-32316129-9. Retrieved 2014-01-10.
  2. ^ a b c NIOSH Pocket Guide to Chemical Hazards. "#0141". National Institute for Occupational Safety and Health (NIOSH).