| Agent Name |
Zinc chromates |
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| CAS Number |
13530-65-9, 11103-86-9, 37300-23-5 |
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| Formula |
Cr-H2-O4.Zn, and others |
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| Major Category |
Metals |
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| Synonyms |
Basic zinc chromate; Buttercup Yellow; C.I. 77955; CI 77955; Chromic acid (H2CrO4), zinc salt (1:1); Chromic acid, zinc salt; Chromium zinc oxide (ZrCrO4); Pigment Yellow 36; ZTO; Zinc Chrome Yellow; Zinc chromate; Zinc chromate AM; Zinc chromate C; Zinc chromate O; Zinc chromate T; Zinc chromate Z; Zinc chromate(VI) hydroxide; Zinc chromates (ACGIH); Zinc chrome; Zinc chrome (anti-corrosion); Zinc chromium oxide (ZrCrO4); Zinc hydroxychromate; Zinc tetraoxychromate; Zinc tetraoxychromate 76A; Zinc tetraoxychromate 780B; Zinc tetroxychromate; Zinc yellow; Zincro ZTO; [ChemIDplus] Basic zinc chromate: ZnCro4; Zinc potassium chromate: KZn2(CrO4)2OH; Zinc yellow: 4ZnO.K2O.4CrO3H2O (approx); [ACGIH] |
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| Category |
Metals, Inorganic Compounds |
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| Description |
Yellow solids that are "sparingly soluble in water"; [ACGIH] |
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| Sources/Uses |
Zinc chromates are used primarily in priming paints to prevent corrosion. They are also used as pigments. There is confusion in the naming of these compounds. [ACGIH] |
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| Comments |
Occupational exposure can cause skin ulcers, lung irritation, and lung cancer. [HSDB] Kidney injury has been reported in workers exposed to hexavalent chromium compounds; [ACGIH] Inhalation may cause irritation; Asthma and skin sensitization are potential adverse effects; [ICSC] "Excess risk for lung cancer has been clearly established in facilities where zinc chromate was produced." [IARC] See "Chromium and compounds." |
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| Exposure Assessment |
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| Skin Designation (ACGIH) |
No |
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| Bioaccumulates |
Yes |
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| TLV (ACGIH) |
0.01 mg/m3, as Cr |
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| PEL (OSHA) | Ceiling(OSHA) = 0.1 mg/m3, as CrO3 |
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| Half Life |
For zinc, whole body: 162-500 days; [TDR, p. 1245] |
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| Adverse Effects |
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| Asthma |
Yes |
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| Lung Cancer |
Yes |
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| Dermatotoxin |
Skin Burns |
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| Skin Sensitizer |
Yes |
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| Hepatotoxin |
Hepatotoxin, Secondary |
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| Nephrotoxin |
Yes |
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| Reproductive Toxin |
Yes |
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| IARC Carcinogen |
Known Carcinogen |
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| Links to Other NLM Databases |
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| Health Studies |
Human Health Effects from Hazardous Substances Data Bank: ZINC CHROMATE
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