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BORIC ACID ICSC: 0991
October 1994
Boracic acid
Orthoboric acid

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CAS # 10043-35-3 H 3BO 3
RTECS # ED4550000 Molecular mass: 61.8

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. Sore throat.
Local exhaust or breathing protection.
Fresh air, rest.
Skin MAY BE ABSORBED! Redness. May be absorbed through injured skin.
Protective gloves.
Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention.
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. Convulsions. Diarrhoea. Nausea. Vomiting. Skin rash.
Do not eat, drink, or smoke during work.
Rinse mouth. Refer for medical attention.

SPILLAGE DISPOSAL PACKAGING & LABELLING
Sweep spilled substance into containers; if appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water (extra personal protection: P2 filter respirator for harmful particles).


EMERGENCY RESPONSE STORAGE

Separated from strong bases.

IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
ODOURLESS, COLOURLESS CRYSTALS OR WHITE POWDER.

CHEMICAL DANGERS:
The substance decomposes on heating above 100°C producing water and irritant boric anhydride. The solution in water is a weak acid. Incompatible with alkali carbonates and hydroxides.

OCCUPATIONAL EXPOSURE LIMITS:
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 20°C is negligible; a nuisance-causing 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 gastrointestinal tract, liver and kidneys.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. Animal tests show that this substance possibly causes toxic effects upon human reproduction.

PHYSICAL PROPERTIES
Melting point (decomposes): 171°C
Relative density (water = 1): 1.4
Solubility in water, g/100 ml: 5.6
Vapour pressure, kPa at 20°C: negligible
 

ENVIRONMENTAL DATA


NOTES
Borofax is a trade name.

IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the European Commission

© IPCS 1999
LEGAL NOTICE Neither the EC nor the IPCS nor any person acting on behalf of the EC or the IPCS is responsible for the use which might be made of this information.



Updated by AS. Approved by EC. Last update: 10.10.2000.