International Chemical Safety Cards

POTASSIUM NITRATE ICSC: 0184
POTASSIUM NITRATE
Saltpeter
KNO3
Molecular mass: 101.1
CAS # 7757-79-1
RTECS # TT3700000
ICSC # 0184
UN # 1486
TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible but enhances combustion of other substances. Gives off irritating or toxic fumes (or gases) in a fire.
NO contact with combustibles or reducing agents.
In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION Risk of fire and explosion on contact with reducing agents.


EXPOSURE
PREVENT DISPERSION OF DUST!

  • INHALATION
  • Cough (see Ingestion).
    Local exhaust or breathing protection.
    Fresh air, rest. Refer for medical attention.
  • SKIN
  • Redness.
    Protective gloves.
    Remove contaminated clothes. Rinse and then wash skin with water and soap.
  • EYES
  • Redness. Pain.
    Safety spectacles.
    First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then take to a doctor.
  • INGESTION
  • Abdominal pain. Blue lips or fingernails. Blue skin. Dizziness. Laboured breathing.
    Do not eat, drink, or smoke during work. Wash hands before eating.
    Rinse mouth.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Sweep spilled substance into plastic or glass containers. Wash away remainder with plenty of water.
    Separated from combustible and reducing substances.

    UN Hazard Class: 5.1
    UN Packing Group: III
    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 0184 Prepared in the context of cooperation between the International Programme on Chemical Safety & the Commission of the European Communities © IPCS CEC 1993

    International Chemical Safety Cards

    POTASSIUM NITRATE ICSC: 0184

    I
    M
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    O
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    A
    N
    T

    D
    A
    T
    A

    PHYSICAL STATE; APPEARANCE:
    ODOURLESS , COLOURLESS TO WHITE CRYSTALLINE POWDER.




    CHEMICAL DANGERS:
    The substance decomposes on heating or on burning producing nitrogen oxides, oxygen , which increases fire hazard. The substance is a strong oxidant and reacts with combustible and reducing materials.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV not established.


    ROUTES OF EXPOSURE:
    The substance can be absorbed into the body by inhalation of its aerosol and by ingestion.

    INHALATION RISK:
    Evaporation at 20C is negligible; a harmful concentration of airborne particles can, however, be reached quickly when dispersed.

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the blood , resulting in formation of methaemoglobin. The effects may be delayed. Medical observation is indicated.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    PHYSICAL
    PROPERTIES
    Decomposes below boiling point at 400C with evolution of oxygenC
    Melting point: 333-334C
    Relative density (water = 1): 2.1
    Solubility in water, g/100 ml at 25C: 35.7
    ENVIRONMENTAL
    DATA

    NOTES
    Rinse contaminated clothes (fire hazard) with plenty of water.
    NFPA Code: H 1; F 0; R 0;
    ADDITIONAL INFORMATION


    ICSC: 0184 POTASSIUM NITRATE
    © IPCS, CEC, 1993
    IMPORTANT LEGAL NOTICE: Neither the CEC or the IPCS nor any person acting on behalf of the CEC or the IPCS is responsible for the use which might be made of this information. This card contains the collective views of the IPCS Peer Review Committee and may not reflect in all cases all the detailed requirements included in national legislation on the subject. The user should verify compliance of the cards with the relevant legislation in the country of use.