化合物详情

USDA APHIS Chemical Effects: collection=usda_chemeffect&query_type=synonym&query='^26628-22-8$'

Aquatic Fate: Photolysis of sodium azide may result in metal nitrides initially, with the eventual formation of the free metal and nitrogen gas.

Sodium azide is a reactive, polar compound(1); therefore, adsorption to soil and soil mobility are not expected to be important environmental fate processes(SRC).

Sodium azide is a reactive, polar compound that should not bioaccumulate(1).

Aqueous sodium azide is readily hydrolyzed to yield hydrazoic acid, a volatile substance that partitions strongly to the gas phase(1).

Sodium azide is stable in water in the absence of light but appears to be susceptible to photo-decomposition by solar radiation. Photolysis of sodium azide may result in metal nitrides initially, with the eventual formation of the free metal and nitrogen gas.

The substance is very toxic to aquatic organisms. This substance does enter the environment under normal use. Great care, however, should be taken to avoid any additional release, for example through inappropriate disposal.

... Sodium azide (NaN3) ... appears naturally in soil. ...

Sodium azide's production and use as an airbag and airline safety chute inflator, in organic synthesis; in the preparation of hydrazoic acid, lead azide, pure sodium, in the differential selection of bacteria; in automatic blood counters; and as a preservative for laboratory reagents(1) may result in its release to the environment through various waste streams(SRC). Its former use as a biocide and soil fumigant, agricultural nematocide, herbicide and in fruit rot control(1) resulted in its direct release to the environment(SRC).

The largest potential exposure is that to automotive workers, repairmen and wreckers if inflatible airbags are installed on all passenger cars(1) and if sodium azide is used as the inflation chemical(1,2).

Sodium azide concentration is typically 60% of compressed disks or pellets blended with other ingredients, and packed into sealed canisters in airbags(1).

Sodium azide's production and use as an airbag and airline safety chute inflator, in organic synthesis; in the preparation of hydrazoic acid, lead azide, pure sodium, in the differential selection of bacteria; in automatic blood counters; and as a preservative for laboratory reagents may result in its release to the environment through various waste streams. Its former use as a biocide and soil fumigant, agricultural nematocide, herbicide and in fruit rot control resulted in its direct release to the environment. Sodium azide is a reactive, polar compound. As a result, adsorption, volatilization and biodegradation are not expected to be important fate processes in soil. Aqueous sodium azide is readily hydrolyzed to yield hydrazoic acid. Adsorption to suspended solids and sediment, bioco...

Skin Exposure: - See ingestion for more comprehensive information.

Eyes, skin, central nervous system, cardiovascular system, kidneys

ACGIH Carcinogen - Not Classifiable.

Sodium azide can be absorbed into the body by inhalation, ingestion, skin contact, or eye contact. Ingestion is an important route of exposure to solid sodium azide. Inhalation is an important route of exposure to the vapor, hydrazoic acid.

IDENTIFICATION AND USE: Sodium azide is a colorless to white crystalline solid, forming hydrazoic acid in water. It is used in organic synthesis, and in the preparation of hydrazoic acid, lead azide, and pure sodium. Other uses include the differential selection of bacteria, in automatic blood counters, and as a preservative for laboratory reagents. It is also a propellant for inflating automotive safety bags. Agricultural uses including nematocide, herbicide, and fruit rot control. HUMAN STUDIES: Potential symptoms of overexposure include irritation of eyes and skin, nausea, vomiting, restlessness, diarrhea, headache, dizziness, weakness, blurred vision, dyspnea, hypotension, tachycardia, bradycardia, tachypnea, hypothermia, acidosis, convulsions, and kidney changes. Cases of fatal sod...

Oral Chronic Reference Dose Reference: IRIS Current

DNA inhibition human fibroblast 50 mg/L.

Summary: Sodium azide induced necrosis in the cerebrum and the thalamus of the brain in both male and female rats.

Fraction of Contaminant Absorbed in Gastrointestinal Tract: 1

A4; Not classifiable as a human carcinogen. /As sodium azide or as hydrazoic acid vapor/

If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 min, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. If victim is conscious, administer water or milk. Do not induce vomiting. Medical observation is recommended for 24-48 hr after breathing overexposure, a...

Fraction of Contaminant Absorbed in Gastrointestinal Tract: 1