Safety data for 1H-benzotriazole
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Toxicity data
Risk phrases
Safety phrases
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This information was last updated on October 12, 2006.
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for it. General
Synonyms: 1,2,3-benzotriazole, 1,2,3-triazaindene,
Cobtratec 99, 1,2-aminozophenylene, azimidobenzene, benzene azimide,
benzisotriazole, benztriazole
Use: reagent in the synthesis of enamines
Molecular formula: C6H5N3
CAS No: 95-14-7
EINECS No: 202-394-1
Physical data
Appearance: yellow to beige solid
Melting point: 95 - 99 C
Boiling point: 350 C, (204 C at 15 mm Hg)
Vapour density: 4.1 g/l
Vapour pressure:
Density (g cm-3): 1.36
Flash point: 170 C
Explosion limits: 2.4% (lower)
Autoignition temperature: 210 C
Water solubility: 25 g/l at 20 C
Stability
Stable, but may be light sensitive. Incompatible with strong oxidizing agents, heavy metals.
Toxicology
Harmful if swallowed or inhaled.
Skin, eye and respiratory irritant.
(The meaning of any toxicological abbreviations which
appear in this section is given
here.)
ORL-RAT LD50 560 mg kg-1
SKN-RAT LD50 > 1000 mg kg-1
ORL-MUS LD50 615 mg kg-1
IHL-RAT LC50 1910 mg/m3/3h
(The meaning of any risk phrases which appear in this section is
given
here.)
R20 R22 R36 R52 R53.
Environmental information
Only slowly biodegradable; do not dispose of in drains.
Transport information
(The meaning of any UN hazard codes which appear in this section
is given
here.)
Non-hazardous for air, sea and road freight.
Personal protection
Safety glasses, adequate ventilation, gloves.
(The meaning of any safety phrases which appear in this section
is given here.)
S26 S36 S37 S61.