calcium dihydroxide

Modify Date: 2024-01-02 12:33:11

calcium dihydroxide Structure
calcium dihydroxide structure
Common Name calcium dihydroxide
CAS Number 1305-62-0 Molecular Weight 74.09270
Density 2.24 g/mL at 25 °C(lit.) Boiling Point 2850 °C
Molecular Formula CaH2O2 Melting Point 580 °C
MSDS Chinese USA Flash Point N/A
Symbol GHS05 GHS07
GHS05, GHS07
Signal Word Danger

 Names

Name calcium dihydroxide
Synonym More Synonyms

 Chemical & Physical Properties

Density 2.24 g/mL at 25 °C(lit.)
Boiling Point 2850 °C
Melting Point 580 °C
Molecular Formula CaH2O2
Molecular Weight 74.09270
Exact Mass 73.96810
PSA 40.46000
Stability Stable. Incompatible with strong acids.
Water Solubility 1.65 g/L (20 ºC)

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
EW2800000
CHEMICAL NAME :
Calcium hydroxide
CAS REGISTRY NUMBER :
1305-62-0
LAST UPDATED :
199712
DATA ITEMS CITED :
27
MOLECULAR FORMULA :
Ca-H2-O2
MOLECULAR WEIGHT :
74.10
WISWESSER LINE NOTATION :
CA Q2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
Standard Draize test
ROUTE OF EXPOSURE :
Administration into the eye
SPECIES OBSERVED :
Rodent - rabbit
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
7340 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
7300 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TYPE OF TEST :
Cytogenetic analysis
TEST SYSTEM :
Rodent - rat Ascites tumor
REFERENCE :
GANNA2 Gann. Japanese Journal of Cancer Research. (Tokyo, Japan) V.1-75, 1907-84. For publisher information, see JJCREP. Volume(issue)/page/year: 54,155,1963 *** REVIEWS *** ACGIH TLV-TWA 5 mg/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 *** 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 OSHA PEL (Gen Indu):8H TWA 15 mg/m3, total dust 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 (Gen Indu):8H TWA 5 mg/m3, respirable fraction 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 15 mg/m3, total dust 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 (Construc):8H TWA 5 mg/m3, respirable fraction 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):8H TWA 15 mg/m3, total dust 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 (Shipyard):8H TWA 5 mg/m3, respirable fraction CFRGBR Code of Federal Regulations. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) Volume(issue)/page/year: 29,1915.1000,1993 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-AUSTRALIA:TWA 5 mg/m3 JAN 1993 OEL-BELGIUM:TWA 5 mg/m3 JAN 1993 OEL-DENMARK:TWA 5 mg/m3 JAN 1993 OEL-FINLAND:TWA 5 mg/m3 JAN 1993 OEL-FRANCE:TWA 5 mg/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 5 mg/m3 JAN 1993 OEL-SWITZERLAND:TWA 5 mg/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 5 mg/m3 JAN 1993 OEL IN BULGARIA, COLOMBIA, JORDAN, KOREA check ACGIH TLV OEL IN NEW ZEALAND, SINGAPORE, VIETNAM check ACGIH TLV *** NIOSH STANDARDS DEVELOPMENT AND SURVEILLANCE DATA *** NIOSH RECOMMENDED EXPOSURE LEVEL (REL) : NIOSH REL TO CALCIUM HYDROXIDE-air:10H TWA 5 mg/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 - 15743 No. of Facilities: 15315 (estimated) No. of Industries: 187 No. of Occupations: 115 No. of Employees: 226292 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 15743 No. of Facilities: 20988 (estimated) No. of Industries: 167 No. of Occupations: 131 No. of Employees: 360007 (estimated) No. of Female Employees: 39330 (estimated)

 Safety Information

Symbol GHS05 GHS07
GHS05, GHS07
Signal Word Danger
Hazard Statements H315-H318-H335
Precautionary Statements P261-P280-P305 + P351 + P338
Personal Protective Equipment dust mask type N95 (US);Eyeshields;Gloves
Hazard Codes Xi:Irritant
Risk Phrases R41
Safety Phrases S26-S39
RIDADR 3262
WGK Germany 1
RTECS EW2800000
Packaging Group III
Hazard Class 8
HS Code 2825909000

 Precursor & DownStream

Precursor  2

DownStream  0

 Customs

HS Code 2825909000

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 Synonyms

slaked lime
calcium hydroxide
EINECS 215-137-3
calcium hydroxide (Ca(OH)2)
hydrated lime
MFCD00010901
calcium,dihydroxide
Calcium hydroxide,(trace metal basis)