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Zinc chromate
Chemical compound / From Wikipedia, the free encyclopedia
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Zinc chromate, ZnCrO4, is a chemical compound, a salt containing the chromate anion, appearing as odorless yellow powder or yellow-green crystals, but, when used for coatings, pigments are often added.[2][3][4] It is used industrially in chromate conversion coatings, having been developed by the Ford Motor Company in the 1920s.[5]
Quick Facts Names, Identifiers ...
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Names | |||
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IUPAC name
Zinc chromate | |||
Identifiers | |||
ChemSpider | |||
ECHA InfoCard | 100.033.511 ![]() | ||
EC Number |
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PubChem CID |
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RTECS number |
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UNII | |||
UN number | 3288 3077 | ||
CompTox Dashboard (EPA) |
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Properties | |||
ZnCrO4 | |||
Molar mass | 181.403 g/mol | ||
Appearance | yellow-green crystals; yellow powder | ||
Density | 3.43 g/cm3 | ||
Melting point | 316 °C (601 °F; 589 K) | ||
Boiling point | 732 °C (1,350 °F; 1,005 K) | ||
insoluble | |||
Hazards | |||
GHS labelling: | |||
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Danger | |||
H302, H317, H350, H410 | |||
P201, P202, P261, P264, P270, P272, P273, P280, P281, P301+P312, P302+P352, P308+P313, P330, P333+P313, P363, P391, P405, P501 | |||
NFPA 704 (fire diamond) | |||
Lethal dose or concentration (LD, LC): | |||
LD50 (median dose) |
0.5 to 5 g/kg | ||
NIOSH (US health exposure limits): | |||
PEL (Permissible) |
0.1 mg/m3[1] | ||
Related compounds | |||
Other anions |
Zinc dichromate | ||
Other cations |
Potassium chromate Sodium chromate | ||
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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