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Potassium chromate
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Not to be confused with Potassium dichromate.
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.
Quick Facts Names, Identifiers ...
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Names | |
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IUPAC name
Potassium chromate | |
Other names
Potassium dichromate, Chromic acid, (K2CrO4), dipotassium salt | |
Identifiers | |
3D model (JSmol) |
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ChEBI | |
ChemSpider |
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ECHA InfoCard | 100.029.218 ![]() |
EC Number |
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PubChem CID |
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RTECS number |
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UNII | |
UN number | 3077 |
CompTox Dashboard (EPA) |
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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 | |
Refractive index (nD) |
1.74 |
Structure | |
rhombic | |
Hazards | |
GHS labelling: | |
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H315, H317, H319, H335, H340, H350i, H410 | |
NFPA 704 (fire diamond) | |
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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