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ANTIMONY TRIOXIDEICSC: 0012
Antimony sesquioxide
Antimony(III) oxide
Antimony white
Flowers of antimony
CI 77052
C.I. Pigment White 11
October 2013
CAS #: 1309-64-4
UN #: (see Notes)
EC Number: 215-175-0

  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. Headache. Nausea. Sore throat. Vomiting.  Use local exhaust or breathing protection.  Fresh air, rest. Refer for medical attention. 
Skin Redness. Pain. Blisters.  Protective gloves.  Remove contaminated clothes. Rinse and then wash skin with water and soap. Refer for medical attention . 
Eyes Redness. Pain.  Wear safety goggles or eye protection in combination with breathing protection if powder.  First rinse with plenty of water for several minutes (remove contact lenses if easily possible), then refer for medical attention. 
Ingestion Abdominal pain. Diarrhoea. Sore throat. Vomiting. Burning sensation in the stomach. Further see Inhalation.  Do not eat, drink, or smoke during work.  Rinse mouth. Rest. Refer 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 sealable containers. If appropriate, moisten first to prevent dusting. Carefully collect remainder. Then store and dispose of according to local regulations. 

According to UN GHS Criteria

cancer;health haz
WARNING
Suspected of causing cancer
Causes mild skin irritation 

Transportation
UN Classification
 

STORAGE
Separated from food and feedstuffs. 
PACKAGING
Do not transport with food and feedstuffs. 
ANTIMONY TRIOXIDE ICSC: 0012
PHYSICAL & CHEMICAL INFORMATION

Physical State; Appearance
WHITE CRYSTALLINE ODOURLESS POWDER. 

Physical dangers
 

Chemical dangers
Decomposes on heating. This produces toxic fumes. Reacts under certain circumstances with hydrogen. This produces a very poisonous gas (stibine - see ICSC 776). 

Formula: Sb2O3
Molecular mass: 291.5
Boiling point: 1550°C (partially sublimes)
Melting point: 656°C
Density (at 24°C): 5.9 g/cm³
See Notes.
Solubility in water, g/l at 22.2°C: 0.0033 (none)
Vapour pressure, Pa at 574°C: 130  


EXPOSURE & HEALTH EFFECTS

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

Effects of short-term exposure
The substance is mildly irritating to the eyes, skin and respiratory tract. 

Inhalation risk
A harmful concentration of airborne particles can be reached quickly when dispersed. 

Effects of long-term or repeated exposure
Repeated or prolonged inhalation of dust may cause effects on the lungs. Tumours have been detected in experimental animals but may not be relevant to humans. 


OCCUPATIONAL EXPOSURE LIMITS
TLV: A2 (suspected human carcinogen).
MAK: carcinogen category: 2; germ cell mutagen group: 3B 

ENVIRONMENT
 

NOTES
Melting point established under the absence of oxygen.
Density differs with crystalline structure.
Depending on the degree of exposure, periodic medical examination is suggested.
The recommendations on this card do not apply to vapour exposure during the production.
The technical product may contain impurities which alter the health effects; for further information see ICSC 0013 Arsenic.
According to special provision SP45, antimony trioxide is not regulated for transport unless it contains more than 0.5% of arsenic. In that case it should be classified as UN number 1549 (Hazard class 6.1 and packaging group III).
TLV Note: Exposure by all routes should be carefully controlled to levels as low as possible. 

ADDITIONAL INFORMATION
  EC Classification
Symbol: Xn; R: 40; S: (2)-22-36/37 

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    See Also:
       Toxicological Abbreviations
       Antimony trioxide (UKPID)