INTOX Home Page
ANTIMONY TRIOXIDE ICSC: 0012
Date of Peer Review: May 2003

Antimony sesquioxide
Antimony(III) oxide
Antimony white
Flowers of antimony
CAS # 1309-64-4 Sb2O3
RTECS # CC5650000 Molecular mass: 291.5
UN # 1549 (see Notes)
EC Index # 051-005-00-X
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: use appropriate extinguishing media.
EXPLOSION


EXPOSURE
PREVENT DISPERSION OF DUST! STRICT HYGIENE! AVOID EXPOSURE OF (PREGNANT) WOMEN!

Inhalation Cough. Headache. Nausea. Sore throat. Vomiting.
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.
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 take to a doctor.
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 PACKAGING & LABELLING
Personal protection: P2 filter respirator for harmful particles. Do NOT let this chemical enter the environment. Sweep spilled substance into sealable containers; if appropriate, moisten first to prevent dusting. Carefully collect remainder, then remove to safe place.
Do not transport with food and feedstuffs.
EU Classification
Symbol: Xn
R: 40
S: (2-)-22-36/37
UN Classification

EMERGENCY RESPONSE STORAGE
Transport Emergency Card: TEC (R)-61GT5-III
Separated from food and feedstuffs.
IPCS
International
Programme on
Chemical Safety
Prepared in the context of cooperation between the International Programme on Chemical Safety and the Commission of the European Communities IPCS, CEC 2005

SEE IMPORTANT INFORMATION ON BACK
ANTIMONY TRIOXIDE ICSC: 0012
IMPORTANT DATA
PHYSICAL STATE; APPEARANCE:
WHITE CRYSTALLINE POWDER.

CHEMICAL DANGERS:
The substance decomposes on heating producing toxic fumes. Reacts under certain circumstances with hydrogen, producing a very poisonous gas (stibine).

OCCUPATIONAL EXPOSURE LIMITS:
TLV: (as Sb) 0.5 mg/m as TWA; (ACGIH 2003).
TLV: Antimony trioxide (production) A2 (suspected human carcinogen); (ACGIH 2003).
MAK: Carcinogen category: 2; Germ cell mutagen group: 3A; (DFG 2005).
ROUTES OF EXPOSURE:
The substance can be absorbed into the body by inhalation.

INHALATION RISK:
A harmful concentration of airborne particles can be reached quickly when dispersed.

EFFECTS OF SHORT-TERM EXPOSURE:
The substance is irritating to the eyes, the skin and the respiratory tract.

EFFECTS OF LONG-TERM OR REPEATED EXPOSURE:
Repeated or prolonged contact with skin may cause dermatitis. Lungs may be affected by repeated or prolonged exposure to the dust of this substance. Tumours have been detected in experimental animals but may not be relevant to humans. Animal tests show that this substance possibly causes toxicity to human reproduction or development.
PHYSICAL PROPERTIES
Boiling point: (partially sublimes) 1550C
Melting point: (see Notes) 656C
Density: 5.2/5.7 g/cm (see Notes)
Solubility in water, g/100 ml at 30C: 0.0014 (none)
Vapour pressure, Pa at 574C: 130
ENVIRONMENTAL DATA
The substance is very toxic to aquatic organisms. Bioaccumulation of this chemical may occur in crustacea. It is strongly advised that this substance does not enter the 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. UN regulation: the special provision SP45 is applicable to the UN number 1549 (Hazard class 6.1 and packaging group III). It means that antimony sulfides and oxides which contain not more than 0.5 % of arsenic calculated on the total weight are not subject to these regulations. Card has been partly updated in October 2005. See sections Occupational Exposure Limits.
ADDITIONAL INFORMATION


LEGAL NOTICE Neither the CEC nor 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
IPCS, CEC 2005
See Also:
        Antimony trioxide (UK PID)