Safety data for sodium nitrite
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Toxicity data
Risk phrases
Safety phrases
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This information was last updated on March 30, 2006.
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for it. General
Synonyms: nitrous acid sodium salt, diazotizing salt, anti-rust
Use:
Molecular formula: NaNO2
CAS No: 7632-00-0
EINECS No: 231-555-9
Annex I Index No: 007-010-00-4
Physical data
Appearance: white to off-white powder
Melting point: 281 C
Boiling point: 320 C
Vapour density:
Vapour pressure:
Density (g cm-3): 2.17
Flash point:
Explosion limits:
Autoignition temperature: 490 C
Water solubility: soluble
Stability
Stable. Incompatible with reducing agents, strong oxidizing agents,
organics and other flammable materials, finely powdered metals. Contact with
combustible material
may lead to fire. Hygroscopic.
Toxicology
Toxic if swallowed. Severe eye irritant. Respiratory and
skin irritant. May act as a carcinogen for chronic exposure.
(The meaning of any toxicological abbreviations which
appear in this section is given
here.)
ORL-RAT LD50 180 mg kg-1
ORL-RBT LD50 178 mg kg-1
ORL-HMN LDLO 71 mg kg-1
IVN-RAT LD50 65 mg kg-1
(The meaning of any risk phrases which appear in this section is
given
here.)
R8 R25 R50.
Environmental information
Very toxic to aquatic organisms.
Transport information
(The meaning of any UN hazard codes which appear in this section
is given
here.)
UN No 1500. Hazard class 5.1. Packing group III.
Personal protection
Safety glasses, adequate ventilation, gloves.
(The meaning of any safety phrases which appear in this section
is given here.)
S45 S61.