Selenium oxydichloride

Modify Date: 2025-08-22 13:57:47

Selenium oxydichloride Structure
Selenium oxydichloride structure
Common Name Selenium oxydichloride
CAS Number 7791-23-3 Molecular Weight 165.865
Density 2.43 g/mL at 25 °C(lit.) Boiling Point 180.0±0.0 °C at 760 mmHg
Molecular Formula Cl2OSe Melting Point 9 °C
MSDS Chinese USA Flash Point 176.4°C
Symbol GHS06 GHS08 GHS09
GHS06, GHS08, GHS09
Signal Word Danger

 Names

Name selenium oxychloride
Synonym More Synonyms

 Chemical & Physical Properties

Density 2.43 g/mL at 25 °C(lit.)
Boiling Point 180.0±0.0 °C at 760 mmHg
Melting Point 9 °C
Molecular Formula Cl2OSe
Molecular Weight 165.865
Flash Point 176.4°C
Exact Mass 165.849136
PSA 17.07000
LogP 0.87940
Vapour Pressure 1.2±0.3 mmHg at 25°C
Index of Refraction 1.651
Stability Stable, but reacts with water and moisture. Incompatible with water, potassium, phosphorus.

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
VS7000000
CHEMICAL NAME :
Seleninyl chloride
CAS REGISTRY NUMBER :
7791-23-3
LAST UPDATED :
199712
DATA ITEMS CITED :
29
MOLECULAR FORMULA :
Cl2-O-Se
MOLECULAR WEIGHT :
165.86
WISWESSER LINE NOTATION :
SE O G2

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
TDLo - Lowest published toxic dose
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Human - man
DOSE/DURATION :
710 ug/kg
TOXIC EFFECTS :
Skin and Appendages - primary irritation (after topical exposure) Skin and Appendages - corrosive (after topical exposure)
REFERENCE :
PHRPA6 Public Health Reports. (U.S. Government Printing Office, Supt. of Documents, Washington, DC 20402) V.1- 1878- Volume(issue)/page/year: 53,94,1938
TYPE OF TEST :
LDLo - Lowest published lethal dose
ROUTE OF EXPOSURE :
Administration onto the skin
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
2 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CTOXAO Clinical Toxicology. (New York, NY) V.1-18, 1968-81. For publisher information, see JTCTDW. Volume(issue)/page/year: 17,171,1980
TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Subcutaneous
SPECIES OBSERVED :
Rodent - rabbit
DOSE/DURATION :
7 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CTOXAO Clinical Toxicology. (New York, NY) V.1-18, 1968-81. For publisher information, see JTCTDW. Volume(issue)/page/year: 17,171,1980 *** 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 TOXICOLOGY REVIEW PHREA7 Physiological Reviews. (American Physiological Soc., 9650 Rockville Pike, Bethesda, MD 20814) V.1- 1921- Volume(issue)/page/year: 23,305,1943 TOXICOLOGY REVIEW 85DHAX "Medical and Biologic Effects of Environmental Pollutants Series," Washington, DC, National Academy of Sciences, 1972-77 Volume(issue)/page/year: Se,112,1976 *** 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 - 84567 No. of Facilities: 14 (estimated) No. of Industries: 1 No. of Occupations: 1 No. of Employees: 196 (estimated)

 Safety Information

Symbol GHS06 GHS08 GHS09
GHS06, GHS08, GHS09
Signal Word Danger
Hazard Statements H301-H331-H373-H410
Supplemental HS Reacts violently with water.
Precautionary Statements P261-P273-P301 + P310-P311-P501
Personal Protective Equipment Faceshields;full-face respirator (US);Gloves;Goggles;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter
Hazard Codes T: Toxic;N: Dangerous for the environment;
Risk Phrases R14
Safety Phrases S26-S36/37/39-S45-S60-S61
RIDADR UN 2879 8/PG 1
WGK Germany 3
RTECS VS7000000
Packaging Group I
Hazard Class 8

 Synthetic Route

 Synonyms

SELENINYL DICHLORIDE
Seleninyl chloride
Selenium oxydichloride
Selenious dichloride
EINECS 232-244-0
MFCD00016327
Selenous dichloride
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