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91-19-0

Basic Information
CAS No.: 91-19-0
Name: Quinoxaline
Article Data: 130
Molecular Structure:
Molecular Structure of 91-19-0 (Quinoxaline)
Formula: C8H6N2
Molecular Weight: 130.149
Synonyms: 1,4-Benzodiazine;1,4-Diazanaphthalene;1,4-Naphthyridine;Benzo[a]pyrazine;Benzopyrazine;Phenopiazine;Phenpiazine;
EINECS: 202-047-4
Density: 1.183 g/cm3
Melting Point: 29-32 °C(lit.)
Boiling Point: 229.5 °C at 760 mmHg
Flash Point: 98.3 °C
Solubility: SOLUBLE
Appearance: light yellow to brown crystalline
Hazard Symbols: IrritantXi
Risk Codes: 36/37/38-36/38
Safety: 26-36-37/39
PSA: 25.78000
LogP: 1.62980
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Chemistry

Molecular formula C8H6N2
Molar mass 130.15 g/mol
mp  29-32 °C(lit.)
bp  220-223 °C(lit.)
density  1.124 g/mL at 25 °C(lit.)
Fp  209 °F
Water Solubility  SOLUBLE

Uses

Quinoxalines are used as dyes, pharmaceuticals and antibiotics.

Toxicity Data With Reference

1.   

ipr-mus LD50:250 mg/kg

   

NTIS**    National Technical Information Service. (Springfield, VA 22161) (Formerly U.S. Clearinghouse for Scientific and Technical Information) AD607-952 .

2.    RTECS  VD1225000

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

Poison by intraperitoneal route. When heated to decomposition it emits toxic fumes of NOx.
Hazard Codes  Xi
Risk Statements  36/37/38-36/38
Safety Statements  26-36-37/39
WGK Germany  3
Hazard Note  Irritant