CAS 7783-00-8|Selenious acid

Introduction:Basic information about CAS 7783-00-8|Selenious acid, including its chemical name, molecular formula, synonyms, physicochemical properties, and safety information, etc.
Common NameSelenious acid
CAS Number7783-00-8Molecular Weight128.97400
Density4.81 g/mL at 25ºC(lit.)Boiling Point684.9ºC(lit.)
Molecular FormulaH2O3SeMelting Point70ºC
MSDSChineseUSAFlash Point690°C
Symbol
GHS06, GHS08, GHS09
Signal WordDanger

Names

Nameselenous acid
SynonymMore Synonyms

Chemical & Physical Properties

Density4.81 g/mL at 25ºC(lit.)
Boiling Point684.9ºC(lit.)
Melting Point70ºC
Molecular FormulaH2O3Se
Molecular Weight128.97400
Flash Point690°C
Exact Mass129.91700
PSA57.53000
Appearance of Characterspowder
InChIKeyMCAHWIHFGHIESP-UHFFFAOYSA-N
SMILESO=[Se](O)O
Storage conditionStore at RT.
StabilityStable.
Water SolubilityH2O: soluble | 167 g/100 mL (20 ºC)

Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
VS7175000
CHEMICAL NAME :
Selenious acid
CAS REGISTRY NUMBER :
7783-00-8
LAST UPDATED :
199712
DATA ITEMS CITED :
33
MOLECULAR FORMULA :
H2-O3-Se
MOLECULAR WEIGHT :
128.98
WISWESSER LINE NOTATION :
H2 SE-O3

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Oral
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
25 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Intraperitoneal
SPECIES OBSERVED :
Rodent - rat
DOSE/DURATION :
10 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 :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
11 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value

MUTATION DATA

TEST SYSTEM :
Rodent - mouse
DOSE/DURATION :
10 mg/kg/2D (Continuous)
REFERENCE :
MUREAV Mutation Research. (Elsevier Science Pub. B.V., POB 211, 1000 AE Amsterdam, Netherlands) V.1- 1964- Volume(issue)/page/year: 367,233,1996 *** REVIEWS *** ACGIH TLV-TWA 0.2 mg(Se)/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 *** MSHA STANDARD-air:TWA 0.2 mg(Se)/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: 3,224,1971 OSHA PEL (Gen Indu):8H TWA 0.2 mg(Se)/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 0.2 mg(Se)/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):8H TWA 0.2 mg(Se)/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 0.2 mg(Se)/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 *** OCCUPATIONAL EXPOSURE LIMITS *** OEL-ARAB Republic of Egypt:TWA 0.2 mg(Se)/m3 JAN 1993 OEL-AUSTRALIA:TWA 0.2 mg(Se)/m3 JAN 1993 OEL-BELGIUM:TWA 0.2 mg(Se)/m3 JAN 1993 OEL-DENMARK:TWA 0.1 mg(Se)/m3 JAN 1993 OEL-FINLAND:TWA 0.1 mg(Se)/m3;STEL 0.3 mg(Se)/m3 JAN 1993 OEL-GERMANY:TWA 0.1 mg(Se)/m3 JAN 1993 OEL-HUNGARY:STEL 0.1 mg(Se)/m3 JAN 1993 OEL-THE NETHERLANDS:TWA 0.2 mg(Se)/m3 JAN 1993 OEL-THE PHILIPPINES:TWA 0.2 mg(Se)/m3 JAN 1993 OEL-POLAND:TWA 0.1 mg(Se)/m3 JAN 1993 OEL-SWEDEN:TWA 0.1 mg(Se)/m3 JAN 1993 OEL-SWITZERLAND:TWA 0.1 mg(Se)/m3 JAN 1993 OEL-TURKEY:TWA 0.2 mg(Se)/m3 JAN 1993 OEL-UNITED KINGDOM:TWA 0.1 mg(Se)/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 OCCUPATIONAL EXPOSURE SURVEY DATA : NOHS - National Occupational Hazard Survey (1974) NOHS Hazard Code - 84466 No. of Facilities: 345 (estimated) No. of Industries: 4 No. of Occupations: 3 No. of Employees: 1177 (estimated) NOES - National Occupational Exposure Survey (1983) NOES Hazard Code - 84466 No. of Facilities: 1294 (estimated) No. of Industries: 17 No. of Occupations: 17 No. of Employees: 7593 (estimated) No. of Female Employees: 1866 (estimated)

Safety Information

Symbol
GHS06, GHS08, GHS09
Signal WordDanger
Hazard StatementsH301 + H331-H373-H410
Precautionary StatementsP261-P273-P301 + P310-P311-P501
Personal Protective EquipmentEyeshields;Faceshields;Gloves;type P2 (EN 143) respirator cartridges
Hazard CodesT:Toxic;N:Dangerousfortheenvironment;
Risk PhrasesR23/25;R33;R50/53
Safety PhrasesS20/21-S28-S45-S60-S61
RIDADRUN 2811/2630/3283
WGK Germany3
RTECSVS7700000
Packaging GroupIII

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Synonyms

Monohydrated selenium dioxide
Selenium dioxide,monohydrated
EINECS 231-974-7
selenic(IV) acid
seleniums acid
EINECS 231-957-4
MFCD00134090
Selenious acid (H2SeO3)
selenious acid
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