2,1,3-Benzoselenadiazole,5-methyl-

Modify Date: 2024-01-19 15:39:21

2,1,3-Benzoselenadiazole,5-methyl- Structure
2,1,3-Benzoselenadiazole,5-methyl- structure
Common Name 2,1,3-Benzoselenadiazole,5-methyl-
CAS Number 1123-91-7 Molecular Weight 197.09600
Density N/A Boiling Point 267.8ºC at 760 mmHg
Molecular Formula C7H6N2Se Melting Point N/A
MSDS N/A Flash Point 115.8ºC

 Names

Name 5-methyl-2,1,3-benzoselenadiazole
Synonym More Synonyms

 Chemical & Physical Properties

Boiling Point 267.8ºC at 760 mmHg
Molecular Formula C7H6N2Se
Molecular Weight 197.09600
Flash Point 115.8ºC
Exact Mass 197.97000
PSA 25.78000
LogP 0.99520
Vapour Pressure 0.0131mmHg at 25°C

 Toxicological Information

CHEMICAL IDENTIFICATION

RTECS NUMBER :
DK7450000
CHEMICAL NAME :
2,1,3-Benzoselenadiazole, 5-methyl-
CAS REGISTRY NUMBER :
1123-91-7
BEILSTEIN REFERENCE NO. :
0116865
LAST UPDATED :
199712
DATA ITEMS CITED :
23
MOLECULAR FORMULA :
C7-H6-N2-Se
MOLECULAR WEIGHT :
197.11
WISWESSER LINE NOTATION :
T56 BN-SE-NJ G1

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :
LD50 - Lethal dose, 50 percent kill
ROUTE OF EXPOSURE :
Intravenous
SPECIES OBSERVED :
Rodent - mouse
DOSE/DURATION :
56 mg/kg
TOXIC EFFECTS :
Details of toxic effects not reported other than lethal dose value
REFERENCE :
CSLNX* U.S. Army Armament Research & Development Command, Chemical Systems Laboratory, NIOSH Exchange Chemicals. (Aberdeen Proving Ground, MD 21010) Volume(issue)/page/year: NX#02914 *** 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

 Synthetic Route

~92%

2,1,3-Benzoselenadiazole,5-methyl- Structure

2,1,3-Benzosele...

CAS#:1123-91-7

Literature: BRISTOL-MYERS SQUIBB COMPANY Patent: EP904262 B1, 2004 ; Location in patent: Page 215 ;

~95%

2,1,3-Benzoselenadiazole,5-methyl- Structure

2,1,3-Benzosele...

CAS#:1123-91-7

Literature: Morkved, Eva H.; Bjorlo, Olav; Schilf, Wojciech; Bernatowicz, Piotr Bulletin of the Polish Academy of Sciences: Chemistry, 2000 , vol. 48, # 1 p. 47 - 56

~%

2,1,3-Benzoselenadiazole,5-methyl- Structure

2,1,3-Benzosele...

CAS#:1123-91-7

Literature: El'tsov; Selitrenikov; Rtishchev Russian Journal of General Chemistry, 1997 , vol. 67, # 2 p. 285 - 294

 Synonyms

2,1,3-Benzoselenadiazole,5-methyl
5-methylbenzo[c][1,2,5]selenadiazole
5-Methyl-benzo-2,1,3-selenadiazol
5-methyl-benzo[1,2,5]selenadiazole
5-Methyl-2,3-benzoselenadiazole
5-Methyl-benzo[1,2,5]selenadiazol
5-methyl-2,1,3-benzoselenadiazol
5-Methyl-piazselenol
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