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BORIC ACIDICSC: 0991
Boracic acid
Orthoboric acid
April 2014
CAS #: 10043-35-3
EC Number: 233-139-2

  ACUTE HAZARDS PREVENTION FIRE FIGHTING
FIRE & EXPLOSION Not combustible. Gives off irritating or toxic fumes (or gases) in a fire.        In case of fire in the surroundings, use appropriate extinguishing media.   

 PREVENT DISPERSION OF DUST! STRICT HYGIENE!  
  SYMPTOMS PREVENTION FIRST AID
Inhalation Cough. Sore throat.  Use local exhaust or breathing protection.  Fresh air, rest. 
Skin No acute symptoms expected.  Protective gloves. Protective clothing.  Rinse and then wash skin with water and soap. 
Eyes Redness. Pain.  Wear safety spectacles or eye protection in combination with breathing protection.  Rinse with plenty of water (remove contact lenses if easily possible). 
Ingestion Nausea. Vomiting. Diarrhoea. Abdominal pain. Skin rash. Headache. Drowsiness. Convulsions.  Do not eat, drink, or smoke during work.  Rinse mouth. Do NOT induce vomiting. Refer immediately for medical attention. 

SPILLAGE DISPOSAL CLASSIFICATION & LABELLING
Personal protection: particulate filter respirator adapted to the airborne concentration of the substance. Sweep spilled substance into covered containers. If appropriate, moisten first to prevent dusting. Wash away remainder with plenty of water. 

According to UN GHS Criteria

cancer;health haz
DANGER
May damage fertility or the unborn child 

Transportation
UN Classification
 

STORAGE
Separated from strong bases. 
PACKAGING
 
BORIC ACID ICSC: 0991
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
ODOURLESS COLOURLESS CRYSTALS OR WHITE POWDER. 

Physical dangers
 

Chemical dangers
Decomposes above 100°C . This produces water and irritant boric anhydride. The solution in water is a weak acid. Attacks metals. This produces hydrogen. This generates fire and explosion hazard. 

Formula: BH3O3 / B(OH)3 / H3BO3
Molecular mass: 61.8
Decomposes at 171°C
Relative density (water = 1): 1.5
Solubility in water, g/100ml at 20°C: 5.6
Vapour pressure at 20°C: negligible
Octanol/water partition coefficient as log Pow: -1.09  


EXPOSURE & HEALTH EFFECTS

Routes of exposure
The substance can be absorbed into the body by inhalation of dust and by ingestion. 

Effects of short-term exposure
The substance is irritating to the respiratory tract. May cause mechanical irritation to the eyes. The substance may cause effects on the central nervous system and kidneys. This may result in impaired functions. 

Inhalation risk
Evaporation at 20°C is negligible; a harmful concentration of airborne particles can, however, be reached quickly , especially if powdered. 

Effects of long-term or repeated exposure
Repeated or prolonged contact with skin may cause dermatitis. The substance may have effects on the testes. Animal tests show that this substance possibly causes toxicity to human reproduction or development. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: (inhalable fraction): 2 mg/m3, as TWA; 6 mg/m3 as STEL; A4 (not classifiable as a human carcinogen).
MAK: (inhalable fraction): 10 mg/m3; peak limitation category: I(1); pregnancy risk group: B 

ENVIRONMENT
 

NOTES
 

ADDITIONAL INFORMATION
  EC Classification
R: 60-61; S: 53-45; Symbol: T 

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