Centrohem
Material Safety Data Sheet
According to EC Directive 91/155/EEC
Fine & speciality chemicals
Section 1 – Chemical Product and Company Identification
Catalogue No.: 289
Product name: Sodium azide p.a.
Synonyms: Hydrazoic azid sodium salt
Company: Centrohem d.o.o., Karađorđeva 129, 22300 Stara Pazova, Serbia
Emergency telephone No.: +381 63 529560
Section 2 – Composition, Information on Ingredients
CAS-No.: 26628-22-8
EC-Index-No.: 011-004-00-7
EC-No.: 247-852-1
M: 65.01 g/mol
Formula Hill: N3Na
Chemical formula: NaN3
Section 3 – Hazards Identification
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.
Section 4 – First Aid Measures
First-aid personnel: ensure self-protection!
After inhalation: fresh air. If breathing stops: immediately apply mechanical ventilation, if
necessary oxygen mask. Immediately call in physician.
After skin contact: wash off with plenty of water. Immediately remove contaminated clothing.
After eye contact: rinse out with plenty of water with the eyelid held wide open. Call in
ophtalmologist.
After swallowing: if victim is still conscious, make him drink plenty of water, induce vomiting,
administer activated charcoal (20 - 40 g in 10% slurry). Immediately call in physician.
Section 5 – Fire Fighting Measures
Suitable extinguishing media: metal fire powder. Cover with dry sand or cement.
Extinguishing media not to be used: Water, foam.
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Special risks: Practically non-combustible. Danger of dust explosion. Development of
hazardous combustion gases or vapours possible in the event of fire.
The following may develop in event of fire: nitrous gases.
Special protective equipment for fire fighting: Do not stay in dangerous zone without selfcontained breathing apparatus. In order to avoid contact with skin, keep a safety distance and
wear suitable protective clothing.
Other information: Contain escaping vapours with water. Prevent fire-fighting water from
entering surface water or groundwater.
Section 6 – Accidental Release Measures
Person-related precautionary measures:
Avoid generation of dusts; do not inhale dusts. Avoid substance contact. Ensure supply of
fresh air in enclosed rooms.
Environmental-protection measures:
Do not allow to enter sewerage system.
Procedures for cleaning / absorption:
Carefully take up dry. Forward for disposal. Clean up affected area.
Additional notes:
Sodium azide and other inorganic azides (including explosive heavy metal azides) can be
rendered harmless by spraying with or immersion into a 0.1 N solution of ammonium(IV) nitrate
in 2 N perchloric acid.
Section 7 – Handling and Storage
Handling: Keep workplace dry. Do not allow product to come into contact with water.
Storage: Tightly closed in a well-ventilated place. Accesible only for authorised persons. Dry.
At +15°C to +25°C.
Section 8 – Exposure Controls, Personal Protection
Specific control parameter
EC
Name Sodium azide
Value 0.1 mg/m3
Skin resorption Risk of skin absorption
Personal protective equipment:
Protective clothing should be selected specifically for the working place, depending on
concentration and quantity of the hazardous substances handled. The resistance of the
protective clothing to chemicals should be ascertained with the respective supplier.
Respiratory protection: required when dusts are generated.
Eye protection: required
Hand protection: In full contact: Glove material: nitrile rubber; Layer thickness: 0.11 mm;
Breakthrough time: > 480 Min.
In splash contact: Glove material: nitrile rubber; Layer thickness: 0.11 mm; Breakthrough time:
> 480 Min.
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Industrial hygiene: Immediately change contaminated clothing. Apply skin- protective barrier
cream. Wash hands and face after working with substance. Under no circumstances eat or
drink at workplace. Work under hood. Do not inhale substance.
Section 9 – Physical and Chemical Properties
Form: solid
Colour: white
Odour: odourless
Melting point: 275 °C (decomposition)
Boiling point: 300 °C (rigorous decomposition)
Density (20 °C) 1.85 g/cm3
Solubility in
water (17 °C) 420 g/l
Thermal decomposition > 275 °C
Section 10 – Stability and Reactivity
Conditions to be avoided
Strong heating.
Substances to be avoided water.
A risk of explosion and/or of toxic gas formation exists with the folllowing substances:
acids, heavy metals, metallic salts, bromine, dimethylsulfate / acid, copper, dichloromethane,
carbon disulfide, sulfuric acid.
Hazardous decomposition products
in the event of fire: See chapter 5.
Further information
highly reactive.
Drop hammer test negative.
explosive decomposition.
Section 11 – Toxicological Information
Acute toxicity
LD50 (dermal, rabbit): 20 mg/kg.
LD50 (oral, rat): 27 mg/kg.
The literature data available to us do not conform with the labelling prescribed by the EC. The
EC has dossiers which have not been published.
Subacute to chronic toxicity
No teratogenic effect in animal experiments.
Further toxicological information
After inhalation of dusts/aerosols: Severe irritations of: mucous membranes, respiratory tract.
Possible damages: pulmonary oedema. Latency time until onset of action.
After skin contact: Slight irritations. Danger of skin absorption.
After eye contact: Slight irritations.
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After swallowing: irritations of mucous membranes in the mouth, pharynx, oesophagus and
gastrointestinal tract.
Systemic effects: CNS disorders, cardiovascular failure, tachycardia, drop in blood pressure,
coughing, dyspnoea, spasms, headache, dizziness, nausea, vomiting, collapse,
unconsciousness.
Further data
This substance should be handled with particular care.
Section 12 – Ecological Information
Highly toxic for aquatic organisms. May cause long-term adverse effects in the aquatic
environment.
Forms toxic mixtures in water, dilution measures notwithstanding. Herbicidal effect.
Nematocidal effect.
Fish toxicity: L.macrochirus LC50: 0.7 mg/l /96 h
Daphnia toxicity: Daphnia pulex EC50: 4.2 mg/l /96 h
Algeal toxicity: mixed culture of green algae IC50: 272 mg/l
Bacterial toxicity: Photobacterium phosphoreum EC50: 38.5 mg/l
Pseudomonas fluorescens EC5: 2.6 mg/l
Further ecologic data:
Do not allow to enter waters, waste water, or soil!
Section 13 – Disposal Considerations
Product: Chemicals must be disposed of in compliance with the respective national
regulations.
Packaging: Centrohem product packaging must be disposed of in compliance with the
Republic of Serbia specific regulations.
Section 14 – Transport Information
Road & Rail ADR, RID
UN 1687 NATRIUMAZID, 6.1, II
Inland waterway ADN, ADNR not tested
Sea IMDG-Code
UN 1687 SODIUM AZIDE, 6.1, II
Ems F-A S-A
Air CAO, PAX
SODIUM AZIDE, 6.1, UN 1687, II
The transport regulations are cited according to international regulations and in the form
applicable in Republic Of Serbia. Possible national deviations in other countries are not
considered.
Section 15 – Regulatory Information
Labelling according to EC Directives
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Symbol: T+ Very toxic
N Dangerous for the environment
R-phrases: 28-32-50/53 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.
S-phrases: 28-45-60-61 After contact with skin, wash immediately with plenty of water. In case
of accident or if you feel unwell, seek medical advice immediately (show the label where
possible). This material and its container must be disposed of as hazardous waste. Avoid
release to the environment. Refer to special instructions/Safety data sheets.
EC-No.: 247-852-1 EC label
Reduced labelling (1999/45/EC,Art.10,4)
Symbol: T+ Very toxic
N Dangerous for the environment
R-phrases: 28-32 Very toxic if swallowed. Contact with acids liberates very toxic gas.
S-phrases: 28-45 After contact with skin, wash immediately with plenty of water. In case of
accident or if you feel unwell, seek medical advice immediately (show the label where
possible).
Section 16 – Additional Information
The information above is believed to be accurate and represents the best information currently
available to us.
It characterizes the product with regard to the appropriate safety precautions. It does not
represent a guarantee of the properties of the product.
Users should make their own investigations to determine the suitability of the information for
their particular purposes.
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