Prepared 29/11/01
                              Chemical                                 By Dr. B. Dunlevy
                                                                        Page 1 of 5

Section 1. Chemical identification
Name: Ammonium nitrate

Section 2. Composition/information on ingredients
CAS #:6484 52 2          EINECS No: 229           MF: H4N2O3 or NH4NO3
                         347 8
Ammonium nitrate; ammonium nitrate, liquid (hot concentrated Solution);
ammonium nitrate, with >0.2% combustible Substances; ammonium nitrate, with
not >0.2% of Combustible substances; ammonium saltpeter; herco Prills; nitric
acid, ammonium salt; varioform I.

Section 3. Hazards identification
Label precautionary statements:
• Oxidizing
• Irritant
• Contact with combustible material may cause fire.
• Irritating to eyes, respiratory system and skin.
Target organ(s):                                                           Oxidizing
• Blood,
• Central nervous system
• Keep away from combustible material.
• In case of contact with eyes, rinse immediately with plenty
   of water and seek medical advice.                                         Irritant
• Wear suitable protective clothing.

Section 4. First aid measures
In case of eye contact, immediately flush eyes or skin with copious amounts of
    water for at least 15 minutes. Assure adequate flushing of the eyes by
    separating the eyelids with fingers, and seek medical advice.
In case of skin contact, immediately flush skin with copious amounts of water for
    at least 15 minutes while removing contaminated clothing and shoes.
If inhaled, remove to fresh air. If not breathing give artificial respiration. If
    breathing is difficult, give oxygen.
                                                                 Prepared 29/11/01
                            Chemical                             By Dr. B. Dunlevy
                                                                  Page 2 of 5
If swallowed, wash out mouth with water provided person is conscious. Call a
Wash contaminated clothing before reuse.

Section 5. Fire fighting measures
Extinguishing media
Water spray.
Special fire fighting procedures
Wear self-contained breathing apparatus and protective clothing to prevent contact
with skin and eyes.
Oxidiser. May explode when heated.
Unusual fire and explosions hazards
Contact with other material may cause fire.
Emits toxic fumes under fire conditions.
Container explosion may occur under fire conditions.

Section 6. Accidental release measures
• Evacuate area.
• Wear self-contained breathing apparatus, rubber boots and heavy rubber
• Cover with dry lime or soda ash, pick up, keep in a closed container and hold
  for waste disposal.
• Ventilate area and wash spill site after material pickup is complete.

Section 7. Handling and storage
Store in YELLOW area.
Refer to Section 8.
Additional information
Ammonium nitrate decomposes at about 210oC. The presence of impurities
markedly lowers the decomposition temperature, e.g. chloride salts, metal oxides.
The following powdered metals react violently or explosively with fused
ammonium nitrate below 200oC: aluminium, antimony, bismuth, cadmium,
chromium, cobalt, copper, iron, lead, magnesium, manganese, potassium, sodium,
nickel, tin, zinc, titanium, As well as brass and stainless steel. Ammonium nitrate
ignites or reacts on contact with: phosphorus, urea, sulphur, potassium nitrite,
sawdust, sugar, trinitroanisole, charcoal, cyanoguanidine, potassium permanganate,
acetic acid, acetic anhydride. Hot aqueous solutions of ammonium nitrate of above
                                                                   Prepared 29/11/01
                              Chemical                             By Dr. B. Dunlevy
                                                                   Page 3 of 5
50% concentration may decompose explosively under adiabatic conditions and

Section 8. Exposure controls/personal protection
• Wear approved respirator EN149, chemical-resistant gloves, safety goggles,
  other protective clothing.
• Use only in a chemical fume hood.
• Safety shower and eye bath.
• Avoid breathing dust.
• Do not get in eyes, on skin, on clothing.
• Avoid prolonged or repeated exposure.
• Wash thoroughly after handling.
• Irritant.
• Keep tightly closed.
• Keep away from combustible materials, heat, sparks, and open flame.
• Store in a cool dry place.

   Goggles           Gloves          Respirator        Wash hands

Section 9. Physical and chemical properties
Appearance and odour
White crystals, granules
Physical properties
Melting point: 210oC (dec.)              Specific gravity: 1.725

Section 10. Stability and reactivity
Strong reducing agents, Strong acids, Finely powdered metals,
Hazardous combustion or decomposition products;
Nitrogen oxides, Ammonia

Section 11. Toxicological information
Acute effects
                                                                   Prepared 29/11/01
                             Chemical                              By Dr. B. Dunlevy
                                                                    Page 4 of 5
•   May be harmful by inhalation, ingestion, or skin absorption.
•   Causes eye and skin irritation.
•   Material is irritating to mucous membranes and upper respiratory tract.
•   Prolonged exposure can cause:
•   Gastrointestinal disturbances
•   Blood effects
Target organ(s):
Central nervous system
Toxicity data
orl-rat LD50: 2217 mg/kg

Section 12. Ecological information
Data not yet available.

Section 13. Disposal considerations
For small quantities: cautiously add to a large stirred excess of water. Adjust the
pH to neutral, separate any insoluble solids or liquids and package them for
hazardous-waste disposal. Flush the aqueous solution down the drain with plenty
of water or alternatively spray on grassland as a fertiliser. The hydrolysis and
neutralisation reactions may generate heat and fumes which can be controlled by
the rate of addition.
Observe all EU, Irish and local environmental regulations.

Section 14. Transport information
Contact chemical supplier for transportation information.

Section 15. Regulatory information
European information
EC No: 229-347-8
                                                                                     Prepared 29/11/01
                                    Chemical                                         By Dr. B. Dunlevy
                                                                                     Page 5 of 5

R8               Contact with combustible material may cause
R 36/37/38       Irritating to eyes, respiratory system and skin.
S 17             Keep away from combustible material.                                 Oxidizing
S 26             In case of contact with eyes, rinse immediately
                 with plenty of water and seek medical advice.
S 36             Wear suitable protective clothing.

Section 16. Other information
This MSDS has been prepared in DkIT and is designed for Irish Second Level School Science
Laboratories use only where quantities handled are less than 50g. The above information is believed to
be correct but does not claim to be all inclusive and shall be used only as a guide. Every effort has been
made to ensure that this information provided conforms with the latest available data. DkIT, the
Department of Education & Science, Limerick Education Centre, Sigma, Aldrich, Fluka, Dr. Dunlevy or
Ms. F. Dunlevy shall not be held liable for any information errors in this MSDS or for any damage
resulting from handling or from contact with the above product.
Please address any comments or error observations to:
Sigma Aldrich Fluka MSDS CD-ROM
MSDS on Internet

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