Name:
Sodium Azide
Synonym:
Sodium salt of hydrazoic acid; Smite; Azium
CAS:
7732-18-5
Section 1 - Chemical Product
MSDS Name:Sodium Azide
Synonym:Sodium salt of hydrazoic acid; Smite; Azium
Synonym:Sodium salt of hydrazoic acid; Smite; Azium
Section 2 - COMPOSITION, INFORMATION ON INGREDIENTS
| CAS# | Chemical Name | emsds | EINECS# |
| 7732-18-5 | Water | <0.5 | 231-791-2 |
| Hazard Symbols: T+ N Risk Phrases: 28 32 50/53 |
Section 3 - HAZARDS IDENTIFICATION
EMERGENCY OVERVIEW
Very toxic if swallowed. Contact with acids liberates very toxic gas. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Heat sensitive.Dangerous for the environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May be fatal if absorbed through the skin.
If absorbed, causes symptoms similar to those of ingestion.
Ingestion:
May be fatal if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Sodium azide may cause hypotension (abnormally low blood pressure), tachycardia (rapid heart rate), tachypnea (quick, shallow breathing), hypothermia (low body temperature), convulsions and severe headache.
Inhalation:
May be fatal if inhaled. Dust is irritating to the respiratory tract. May cause effects similar to those described for ingestion.
Rapidly absorbed.
Chronic:
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion.
Very toxic if swallowed. Contact with acids liberates very toxic gas. Very toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment.Heat sensitive.Dangerous for the environment.
Potential Health Effects
Eye:
Causes eye irritation.
Skin:
Causes skin irritation. May be fatal if absorbed through the skin.
If absorbed, causes symptoms similar to those of ingestion.
Ingestion:
May be fatal if swallowed. Causes gastrointestinal irritation with nausea, vomiting and diarrhea. Sodium azide may cause hypotension (abnormally low blood pressure), tachycardia (rapid heart rate), tachypnea (quick, shallow breathing), hypothermia (low body temperature), convulsions and severe headache.
Inhalation:
May be fatal if inhaled. Dust is irritating to the respiratory tract. May cause effects similar to those described for ingestion.
Rapidly absorbed.
Chronic:
Chronic inhalation and ingestion may cause effects similar to those of acute inhalation and ingestion.
Section 4 - FIRST AID MEASURES
Eyes: In case of contact, immediately flush eyes with plenty of water for at least 15 minutes. Get medical aid.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
Call a poison control center. If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
POISON material. If inhaled, get medical aid immediately. Remove victim to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen.
Notes to Physician:
Treat symptomatically and supportively.
Skin:
In case of contact, immediately flush skin with plenty of water for at least 15 minutes while removing contaminated clothing and shoes.
Get medical aid immediately. Wash clothing before reuse.
Ingestion:
Call a poison control center. If swallowed, do not induce vomiting unless directed to do so by medical personnel. Never give anything by mouth to an unconscious person. Get medical aid.
Inhalation:
POISON material. If inhaled, get medical aid immediately. Remove victim to fresh air. If not breathing, give artificial respiration.
If breathing is difficult, give oxygen.
Notes to Physician:
Treat symptomatically and supportively.
Section 5 - FIRE FIGHTING MEASURES
General Information:
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors may form an explosive mixture with air.
Water Reactive. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Approach fire from upwind to avoid hazardous vapors and toxic decomposition products. Forms explosion sensitive compounds with some metals such as lead and copper. Form hydrazoic acid vapor in contact with acid or water.
Hydrazoic acid vapor is highly toxic and a dangerous explosive.
Hydrazoic acid is shock sensitive.
Extinguishing Media:
Use dry chemical, carbon dioxide, or alcohol-resistant foam. Do NOT get water inside containers.
As in any fire, wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. Vapors may form an explosive mixture with air.
Water Reactive. Contact with metals may evolve flammable hydrogen gas. Containers may explode when heated. Approach fire from upwind to avoid hazardous vapors and toxic decomposition products. Forms explosion sensitive compounds with some metals such as lead and copper. Form hydrazoic acid vapor in contact with acid or water.
Hydrazoic acid vapor is highly toxic and a dangerous explosive.
Hydrazoic acid is shock sensitive.
Extinguishing Media:
Use dry chemical, carbon dioxide, or alcohol-resistant foam. Do NOT get water inside containers.
Section 6 - ACCIDENTAL RELEASE MEASURES
General Information: Use proper personal protective equipment as indicated in Section 8.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Remove all sources of ignition. Provide ventilation. Do not flush down the drain. Over a period of time, sodium azide may react with copper, lead, brass, or solder in plumbing systems to form an accumulation of the highly explosive compounds of lead azide and copper azide.
Spills/Leaks:
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, observing precautions in the Protective Equipment section. Avoid generating dusty conditions.
Remove all sources of ignition. Provide ventilation. Do not flush down the drain. Over a period of time, sodium azide may react with copper, lead, brass, or solder in plumbing systems to form an accumulation of the highly explosive compounds of lead azide and copper azide.
Section 7 - HANDLING and STORAGE
Handling:
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed.
Do not ingest or inhale. Use only with adequate ventilation. Do not use with metal spatula or other metal items.
Storage:
Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Keep away from acids. Do not store in metal containers.
Keep containers tightly closed. Some have recommended storage in an explosion-proof refrigerator.
Wash thoroughly after handling. Remove contaminated clothing and wash before reuse. Minimize dust generation and accumulation. Do not get in eyes, on skin, or on clothing. Keep container tightly closed.
Do not ingest or inhale. Use only with adequate ventilation. Do not use with metal spatula or other metal items.
Storage:
Keep away from sources of ignition. Store in a cool, dry, well-ventilated area away from incompatible substances. Keep away from water. Keep away from acids. Do not store in metal containers.
Keep containers tightly closed. Some have recommended storage in an explosion-proof refrigerator.
Section 8 - EXPOSURE CONTROLS, PERSONAL PROTECTION
Engineering Controls:
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 7732-18-5: CAS# 7782-79-8: Germany: 0.1 ppm TWA; 0.18 mg/m3 TWA Netherlands: 0.1 ppm MAC; 0.18 mg/m3 MAC CAS# 26628-22-8: United Kingdom, WEL - TWA: 0.1 mg/m3 TWA (as NaN3) United Kingdom, WEL - STEL: 0.3 mg/m3 STEL (as NaN3) Belgium - TWA: 0.1 mg/m3 VLE Belgium - STEL: 0.30 mg/m3 VLE France - VLE: 0.1 ppm VLE; 0.3 mg/m3 VLE Germany: 0.2 mg/m3 TWA Malaysia: 0.29 mg/m3 Ceiling (as sodium azide); 0.11 ppm Ceiling hydrazoic acid vapour Netherlands: 0.3 mg/m3 STEL Netherlands: 0.1 mg/m3 MAC Spain: 0.1 mg/m3 VLA-ED Spain: 0.3 mg/m3 VLA-EC; 0.1 ppm VLA-EC (as hydrazoic acid vapor) 0.18 mg/m3 VLA-EC (a Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Use process enclosure, local exhaust ventilation, or other engineering controls to control airborne levels below recommended exposure limits. Facilities storing or utilizing this material should be equipped with an eyewash facility and a safety shower.
Exposure Limits CAS# 7732-18-5: CAS# 7782-79-8: Germany: 0.1 ppm TWA; 0.18 mg/m3 TWA Netherlands: 0.1 ppm MAC; 0.18 mg/m3 MAC CAS# 26628-22-8: United Kingdom, WEL - TWA: 0.1 mg/m3 TWA (as NaN3) United Kingdom, WEL - STEL: 0.3 mg/m3 STEL (as NaN3) Belgium - TWA: 0.1 mg/m3 VLE Belgium - STEL: 0.30 mg/m3 VLE France - VLE: 0.1 ppm VLE; 0.3 mg/m3 VLE Germany: 0.2 mg/m3 TWA Malaysia: 0.29 mg/m3 Ceiling (as sodium azide); 0.11 ppm Ceiling hydrazoic acid vapour Netherlands: 0.3 mg/m3 STEL Netherlands: 0.1 mg/m3 MAC Spain: 0.1 mg/m3 VLA-ED Spain: 0.3 mg/m3 VLA-EC; 0.1 ppm VLA-EC (as hydrazoic acid vapor) 0.18 mg/m3 VLA-EC (a Personal Protective Equipment Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHAs eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166.
Skin:
Wear appropriate protective gloves to prevent skin exposure.
Clothing:
Wear appropriate protective clothing to prevent skin exposure.
Respirators:
Follow the OSHA respirator regulations found in 29 CFR 1910.134 or European Standard EN 149. Use a NIOSH/MSHA or European Standard EN 149 approved respirator if exposure limits are exceeded or if irritation or other symptoms are experienced.
Section 9 - PHYSICAL AND CHEMICAL PROPERTIES
Physical State: Crystals
Color: colorless to white
Odor: odorless
pH: Not available.
Vapor Pressure: Negligible.
Viscosity: Not applicable.
Boiling Point: Not applicable.
Freezing/Melting Point: 527 deg F (dec)
Autoignition Temperature: Not available.
Flash Point: Not applicable.
Explosion Limits, lower: Not available.
Explosion Limits, upper: Not available.
Decomposition Temperature: 527 deg F
Solubility in water: Soluble.
Specific Gravity/Density: 1.85
Molecular Formula: N3Na
Molecular Weight: 65.01
Section 10 - STABILITY AND REACTIVITY
Chemical Stability:
Stable. However, may decompose if heated. May be shock-sensitive.
Conditions to Avoid:
Mechanical shock, light, contact with water, temperatures above 275C.
Incompatibilities with Other Materials:
Acids, some metals, oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, sodium oxide, hydrazoic acid.
Hazardous Polymerization: Has not been reported.
Stable. However, may decompose if heated. May be shock-sensitive.
Conditions to Avoid:
Mechanical shock, light, contact with water, temperatures above 275C.
Incompatibilities with Other Materials:
Acids, some metals, oxidizing agents.
Hazardous Decomposition Products:
Nitrogen oxides, sodium oxide, hydrazoic acid.
Hazardous Polymerization: Has not been reported.
Section 11 - TOXICOLOGICAL INFORMATION
RTECS#:
CAS# 7732-18-5: ZC0110000 CAS# 7782-79-8: MW2800000 CAS# 26628-22-8: VY8050000 LD50/LC50:
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
CAS# 7782-79-8: Inhalation, mouse: LC50 = 34 mg/m3; Oral, rat: LD50 = 33 mg/kg.
CAS# 26628-22-8: Inhalation, mouse: LC50 = 32400 ug/m3; Inhalation, rat: LC50 = 37 mg/m3; Oral, mouse: LD50 = 27 mg/kg; Oral, rat: LD50 = 27 mg/kg; Skin, rabbit: LD50 = 20 mg/kg; Skin, rat: LD50 = 50 mg/kg.
Carcinogenicity:
Water - Not listed by ACGIH, IARC, or NTP.
Hydrazoic acid - Not listed by ACGIH, IARC, or NTP.
Sodium azide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
CAS# 7732-18-5: ZC0110000 CAS# 7782-79-8: MW2800000 CAS# 26628-22-8: VY8050000 LD50/LC50:
CAS# 7732-18-5: Oral, rat: LD50 = >90 mL/kg.
CAS# 7782-79-8: Inhalation, mouse: LC50 = 34 mg/m3; Oral, rat: LD50 = 33 mg/kg.
CAS# 26628-22-8: Inhalation, mouse: LC50 = 32400 ug/m3; Inhalation, rat: LC50 = 37 mg/m3; Oral, mouse: LD50 = 27 mg/kg; Oral, rat: LD50 = 27 mg/kg; Skin, rabbit: LD50 = 20 mg/kg; Skin, rat: LD50 = 50 mg/kg.
Carcinogenicity:
Water - Not listed by ACGIH, IARC, or NTP.
Hydrazoic acid - Not listed by ACGIH, IARC, or NTP.
Sodium azide - Not listed by ACGIH, IARC, or NTP.
Other:
See actual entry in RTECS for complete information.
Section 12 - ECOLOGICAL INFORMATION
Ecotoxicity:
Fish: Rainbow trout: LC50 = 0.8-1.6 mg/L; 96 Hr.; 13 degrees CFish: Bluegill/Sunfish: LC50 = 0.7-0.8 mg/L; 96 Hr.; 18 degrees C Other Harmful to aquatic life in very low concentrations.
Fish: Rainbow trout: LC50 = 0.8-1.6 mg/L; 96 Hr.; 13 degrees CFish: Bluegill/Sunfish: LC50 = 0.7-0.8 mg/L; 96 Hr.; 18 degrees C Other Harmful to aquatic life in very low concentrations.
Section 13 - DISPOSAL CONSIDERATIONS
Dispose of in a manner consistent with federal, state, and local regulations.
Section 14 - TRANSPORT INFORMATION
IATA
Shipping Name: SODIUM AZIDE
Hazard Class: 6.1
UN Number: 1687
Packing Group: II
IMO
Shipping Name: SODIUM AZIDE
Hazard Class: 6.1
UN Number: 1687
Packing Group: II
RID/ADR
Shipping Name: SODIUM AZIDE
Hazard Class: 6.1
UN Number: 1687
Packing group: II
USA RQ: CAS# 26628-22-8: 1000 lb final RQ; 454 kg final RQ
Section 15 - REGULATORY INFORMATION
European/International Regulations
European Labeling in Accordance with EC Directives
Hazard Symbols: T+ N
Risk Phrases:
R 28 Very toxic if swallowed.
R 32 Contact with acids liberates very toxic gas.
R 50/53 Very toxic to aquatic organisms, may cause
long-term adverse effects in the aquatic environment.
Safety Phrases:
S 28A After contact with skin, wash immediately with
plenty of water.
S 45 In case of accident or if you feel unwell, seek
medical advice immediately (show the label where
possible).
S 60 This material and its container must be
disposed of as hazardous waste.
S 61 Avoid release to the environment. Refer to
special instructions/safety data sheets.
WGK (Water Danger/Protection)
CAS# 7732-18-5: No information available.
CAS# 7782-79-8: No information available.
CAS# 26628-22-8: 2
Canada
CAS# 7732-18-5 is listed on Canadas DSL List.
CAS# 7782-79-8 is listed on Canadas NDSL List.
CAS# 26628-22-8 is listed on Canadas DSL List.
CAS# 7732-18-5 is not listed on Canadas Ingredient Disclosure List.
CAS# 7782-79-8 is listed on Canadas Ingredient Disclosure List.
CAS# 26628-22-8 is listed on Canadas Ingredient Disclosure List.
US FEDERAL
TSCA
CAS# 7732-18-5 is listed on the TSCA inventory.
CAS# 7782-79-8 is listed on the TSCA inventory.
CAS# 26628-22-8 is listed on the TSCA inventory.
