chromic acid

Modify Date: 2025-08-25 16:26:49

chromic acid Structure
chromic acid structure
Common Name chromic acid
CAS Number 7738-94-5 Molecular Weight 118.01000
Density N/A Boiling Point 330ºC
Molecular Formula CrH2O4 Melting Point 196ºC (dec.)(lit.)
MSDS N/A Flash Point 250ºC

 Names

Name chromic acid
Synonym More Synonyms

 Chemical & Physical Properties

Boiling Point 330ºC
Melting Point 196ºC (dec.)(lit.)
Molecular Formula CrH2O4
Molecular Weight 118.01000
Flash Point 250ºC
Exact Mass 117.93600
PSA 74.60000
InChIKey KRVSOGSZCMJSLX-UHFFFAOYSA-L
SMILES O=[Cr](=O)(O)O
Water Solubility HIGHLY Soluble

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
GB2450000
CHEMICAL NAME :
Chromic acid (H2CrO4)
CAS REGISTRY NUMBER :
7738-94-5
LAST UPDATED :
199712
DATA ITEMS CITED :
18
MOLECULAR FORMULA :
Cr-H2-O4
MOLECULAR WEIGHT :
118.02
WISWESSER LINE NOTATION :
H2 CR-O4

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Mammal - dog
DOSE/DURATION :
320 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
DNA repair
TEST SYSTEM :
Yeast - Schizosaccharomyces pombe
REFERENCE :
CNJGA8 Canadian Journal of Genetics and Cytology. (National Research Council of Canada, Publication Sales and Distribution, Ottawa ON K1A OR6, Canada) V.1- 1959- Volume(issue)/page/year: 24,771,1982 *** REVIEWS *** ACGIH TLV-TWA 0.05 mg(Cr)/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 ACGIH TLV-Confirmed human carcinogen DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: TLV/BEI,1997 *** U.S. STANDARDS AND REGULATIONS *** EPA FIFRA 1988 PESTICIDE SUBJECT TO REGISTRATION OR RE-REGISTRATION FEREAC Federal Register. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1936- Volume(issue)/page/year: 54,7740,1989 MSHA STANDARD-air:TWA 0.5 mg(Cr)/m3 DTLVS* The Threshold Limit Values (TLVs) and Biological Exposure Indices (BEIs) booklet issues by American Conference of Governmental Industrial Hygienists (ACGIH), Cincinnati, OH, 1996 Volume(issue)/page/year: 3,35,1971 OSHA PEL (Gen Indu):CL 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1910.1000,1994 OSHA PEL (Construc):8H TWA 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1926.55,1994 OSHA PEL (Shipyard):CL 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 OSHA PEL (Fed Cont):8H TWA 0.1 mg(CrO3)/m3 CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 41,50-204.50,1994 *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CHROMIC ACID-air:10H CA TWA 0.001 mg(Cr)/m3 REFERENCE : NIOSH* National Institute for Occupational Safety and Health, U.S. Dept. of Health, Education, and Welfare, Reports and Memoranda. Volume(issue)/page/year: DHHS #92-100,1992 NIOSH OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 19360 No. of Facilities: 6762 (estimated) No. of Industries: 108 No. of Occupations: 76 No. of Employees: 51589 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 19360 No. of Facilities: 6020 (estimated) No. of Industries: 105 No. of Occupations: 84 No. of Employees: 126538 (estimated) No. of Female Employees: 19927 (estimated)

 Safety Information

RIDADR UN 1463/1755

 Synonyms

Jones reagent
5H-[1]Benzopyrano[3,4-b]pyridin-5-one
EINECS 231-801-5
Chromic acid
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