| Agent Name | Calcium dichromate |
|---|---|
| CAS Number | 14307-33-6 |
| Formula | Ca.Cr2-O7 |
| Major Category | Metals |
| Synonyms | Calcium chromate; Calcium dichromate(VI); Chromic acid (H2Cr2O7), calcium salt (1:1); Chromic acid, calcium salt (1:1) (9CI); Dichromic acid, calcium salt (1:1); [ChemIDplus] Calcium bichromate; [Merck Index] |
| Category | Chromium Compounds, Inorganic |
| Description | Trihydrate: Brownish-red deliquescent solid; Soluble in water; [Hawley] Trihydrate: orange-red solid; Not hygroscopic if pure; [Merck Index] |
| Sources/Uses | Used as corrosion inhibitor, catalyst, and to make other chromium compounds; [Hawley] |
| Comments | CrVI compounds are irritants, sensitizers, and may be corrosive to the skin. CrVI compounds are respiratory tract irritants and may cause pulmonary sensitization. CrVI may cause acute tubular necrosis and liver injury. [ATSDR Case Studies] Readily forms hydrates: hexahydrate at <10 deg C, pentahydrate at 20-40 deg C, pentahydrate at 50-60 deg C, and the monohydrate at >70 deg C; [Ullmann] See "Chromium" and linked occupational diseases. |
| Exposure Assessment | |
| Skin Designation (ACGIH) | Yes |
| TLV (ACGIH) | 0.0002 mg/m3, as Cr(VI), inhalable particulate matter |
| STEL (ACGIH) | 0.0005 mg/m3, as Cr(VI), inhalable particulate matter |
| PEL (OSHA) | 0.005 mg/m3, as Cr(VI) |
| Adverse Effects | |
| Skin Sensitizer | Yes |
| Asthma | Yes |
| Hepatotoxin | Hepatotoxin, Secondary |
| Nephrotoxin | Yes |
| Dermatotoxin | Skin Burns |
| IARC Carcinogen | Known Carcinogen |
| NTP Carcinogen | Human Carcinogen |
| ACGIH Carcinogen | Confirmed Human |
| Links to Other NLM Databases | |
| Toxicity Information | |
| Chemical Information | |
| Related Information in HazMap | |
| Diseases | Occupational diseases associated with exposure to this agent: |
Agent Name
Calcium dichromate
CAS Number
14307-33-6
Formula
Ca.Cr2-O7
Major Category
Metals
Synonyms
Calcium chromate; Calcium dichromate(VI); Chromic acid (H2Cr2O7), calcium salt (1:1); Chromic acid, calcium salt (1:1) (9CI); Dichromic acid, calcium salt (1:1); [ChemIDplus] Calcium bichromate; [Merck Index]
Category
Chromium Compounds, Inorganic
Description
Trihydrate: Brownish-red deliquescent solid; Soluble in water; [Hawley] Trihydrate: orange-red solid; Not hygroscopic if pure; [Merck Index]
Sources/Uses
Used as corrosion inhibitor, catalyst, and to make other chromium compounds; [Hawley]
Comments
CrVI compounds are irritants, sensitizers, and may be corrosive to the skin. CrVI compounds are respiratory tract irritants and may cause pulmonary sensitization. CrVI may cause acute tubular necrosis and liver injury. [ATSDR Case Studies] Readily forms hydrates: hexahydrate at <10 deg C, pentahydrate at 20-40 deg C, pentahydrate at 50-60 deg C, and the monohydrate at >70 deg C; [Ullmann] See "Chromium" and linked occupational diseases.
Exposure Assessment
Skin Designation (ACGIH)
Yes
TLV (ACGIH)
0.0002 mg/m3, as Cr(VI), inhalable particulate matter
STEL (ACGIH)
0.0005 mg/m3, as Cr(VI), inhalable particulate matter
PEL (OSHA)
0.005 mg/m3, as Cr(VI)
Adverse Effects
Skin Sensitizer
Yes
Asthma
Yes
Hepatotoxin
Hepatotoxin, Secondary
Nephrotoxin
Yes
Dermatotoxin
Skin Burns
IARC Carcinogen
Known Carcinogen
NTP Carcinogen
Human Carcinogen
ACGIH Carcinogen
Confirmed Human
Links to Other NLM Databases
Toxicity Information
Chemical Information
Related Information in HazMap
Diseases
Occupational diseases associated with exposure to this agent: