Potassium chromate

Not to be confused with Potassium dichromate.
Potassium chromate
Names
IUPAC name
Potassium chromate
Other names
Potassium dichromate, Chromic acid, (K2CrO4), dipotassium salt
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.029.218 Edit this at Wikidata
EC Number
  • 232-140-5
RTECS number
  • GB2940000
UNII
UN number 3077
  • InChI=1S/Cr.2K.4O/q;2*+1;;;2*-1 ☒N
    Key: XMXNVYPJWBTAHN-UHFFFAOYSA-N ☒N
  • InChI=K2CrO4
    Key: XMXNVYPJWBTAHN-QALQIXLOAU
  • [O-][Cr](=O)(=O)[O-].[K+].[K+]
Properties
K
2CrO
4
Molar mass 194.189 g·mol−1
Appearance Yellow powder
Odor odorless
Density 2.7320 g/cm3
Melting point 968 °C (1,774 °F; 1,241 K)
Boiling point 1,000 °C (1,830 °F; 1,270 K)
63.7 g/100 mL (20 °C)
75.1 g/100 mL (80 °C)
79.2 g/100 mL (100 °C)
Solubility insoluble in alcohol
−3.9·10−6 cm3/mol
1.74
Structure
rhombic
Hazards
GHS labelling:
GHS07: Exclamation markGHS08: Health hazardGHS09: Environmental hazard
H315, H317, H319, H335, H340, H350i, H410
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 2: Intense or continued but not chronic exposure could cause temporary incapacitation or possible residual injury. E.g. chloroformFlammability 0: Will not burn. E.g. waterInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazard OX: Oxidizer. E.g. potassium perchlorate
2
0
0
OX
Safety data sheet (SDS) Fisher Scientific
Related compounds
Other anions
 Potassium dichromate
Potassium molybdate
Potassium tungstate
Other cations
 Sodium chromate
Calcium chromate
Barium chromate
Related chromates
 Potassium hypochromate
Potassium perchromate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Potassium chromate is the inorganic compound with the formula K2CrO4. This yellow solid is the potassium salt of the chromate anion. It is a common laboratory chemical, whereas sodium chromate is important industrially.