A white crystalline solid.
In signal lights, marine signals, railroad flares, matches, in pyrotechnics (red fire).
Registry Numbers and Inventories.
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Vapor density (air=1)
Odor Threshold Odor threshold Odorless
Solubility in water
Hazards and Protection.
Do not store near combustible materials. Store in a cool, dry place. Store in a tightly closed container.
Minimize dust generation and accumulation. Avoid breathing dust, vapor, mist, or gas. Avoid contact with skin and eyes. Use only in a chemical fume hood.
Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to minimize contact with skin.
A NIOSH/MSHA approved air purifying dust or mist respirator or European Standard EN 149.
Carefully scoop up and place into appropriate disposal container.
Stable under normal temperatures and pressures.
Strong acids, combustible and flammable materials (e.g. alkyl resins, asphalt, gasoline, grease, methyl acetone, polystyrene, polyurethane), reducing agents, active metals, phosphorus, sulfur.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Strong oxidizer. Contact with combustible materials may cause a fire. Substance is noncombustible. Extinguishing media: Use water spray to cool fire-exposed containers. Use water only!
May explode from heat or contamination. May react explosively with hydrocarbons (fuels). May ignite combustibles.
Yields toxic gaseous oxides of nitrogen when involved in fire.
OSHA PEL: 15 mg/m3 total dust, 5 mg/m3 respirable fraction for nuisance dusts.
Orthostatic abnormally low blood pressure and rapid heart rate are common. Abnormally low blood pressure and low heart rate are possible. Throbbing headache is common. Seizures have been reported following severe intoxication. Behavioral deficits were observed in the adult offspring of rats who received sodium nitrite prenatally.
Expected to be a low ingestion hazard.
May cause respiratory tract irritation.
May cause skin irritation.
May cause eye irritation.
Get medical aid. Wash mouth out with water.
Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen. Get medical aid.
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes.
Flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
USCG CHRIS Code
2834 29 80
Std. Transport #