International Chemical Safety Cards

SODIUM TETRABORATE, ANHYDROUS ICSC: 1229
SODIUM TETRABORATE
Sodium biborate
Sodium pyroborate
Boron sodium oxide
Fused borax
Na2B4O7
Molecular mass: 201.3
CAS # 1330-43-4
RTECS # ED4588000
ICSC # 1229
TYPES OF
HAZARD/
EXPOSURE
ACUTE HAZARDS/
SYMPTOMS
PREVENTION FIRST AID/
FIRE FIGHTING
FIRE Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.

In case of fire in the surroundings: all extinguishing agents allowed.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST!

  • INHALATION
  • Cough. Shortness of breath. Sore throat. Nose bleed.
    Local exhaust or breathing protection.
    Fresh air, rest.
  • SKIN
  • Dry 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. Diarrhoea. Nausea. Vomiting. Weakness.
    Do not eat, drink, or smoke during work.
    Rinse mouth. Refer for medical attention.
    SPILLAGE DISPOSAL STORAGE PACKAGING & LABELLING
    Sweep spilled substance into containers. Carefully collect remainder, then remove to safe place (extra personal protection: P2 filter respirator for harmful particles).
    Separated from strong oxidants. Dry. Well closed.

    SEE IMPORTANT INFORMATION ON BACK
    ICSC: 1229 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

    SODIUM TETRABORATE, ANHYDROUS ICSC: 1229

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    PHYSICAL STATE; APPEARANCE:
    ODOURLESS, HYGROSCOPIC, WHITE POWDER OR GLASS-LIKE PLATE. TURNS OPAQUE ON EXPOSURE TO AIR.

    PHYSICAL DANGERS:


    CHEMICAL DANGERS:
    The substance decomposes on heating or on burning producing toxic fumes including sodium oxide. Reacts with strong oxidants.

    OCCUPATIONAL EXPOSURE LIMITS (OELs):
    TLV: ppm; 1 mg/m3 (as TWA) (ACGIH 1994-1995).


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

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

    EFFECTS OF SHORT-TERM EXPOSURE:
    The substance irritates the eyes, the skin and the respiratory tract. The substance may cause effects on the central nervous system, kidneys and gastrointestinal tract by ingestion at high dose or through damaged skin.

    EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
    Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the respiratory tract.
    PHYSICAL
    PROPERTIES
    Boiling point (decomposes): 1575C
    Melting point: 741C
    Relative density (water = 1): 2.367
    Solubility in water, g/100 ml at 20C: 2.56
    ENVIRONMENTAL
    DATA

    N O T E S
    Rasorite 65 is a trade name.
    ADDITIONAL INFORMATION


    ICSC: 1229 SODIUM TETRABORATE, ANHYDROUS
    © 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.