- Antimony white
- Flowers of antimony
- Antimony(III) oxide
- Antimony sesquioxide
- Diantimony trioxide
Antimony trioxide is a white crystalline solid.
Manufacture of tartar emetic, as paintermediate pigment, in enamels and glasses, as mordant, in flame-proofing canvas.
Registry Numbers and Inventories.
EC Index Number
Carcinogenic Category 3
S 22 36/37
Tumorigen; Mutagen; Reproductive Effector; Primary Irritant
Swiss Giftliste 1
Japan ENCS (MITI)
Melting point, °C
Boiling point, °C
Vapor pressure, mmHg
10 (670 C)
Odor Threshold Odor threshold Odorless
5.2 g/cm3 (20 C)
Solubility in water
1.67 - 2.06
Heat of fusion
Heat of vaporization
Hazards and Protection.
Store in a cool, dry, well-ventilated area away from incompatible substances. Keep containers tightly closed.
Use with adequate ventilation. Minimize dust generation and accumulation. Avoid contact with eyes, skin, and clothing. Avoid contact with heat, sparks and flame. Avoid ingestion and inhalation.
Eyes: Wear appropriate protective eyeglasses or chemical safety goggles as described by OSHA's eye and face protection regulations in 29 CFR 1910.133 or European Standard EN166. Skin: Wear appropriate protective gloves to prevent skin exposure. Clothing: Wear appropriate protective clothing to prevent skin exposure.
Follow the OSHA respirator regulations found in 29CFR 1910.134 or European Standard EN 149. Always use a NIOSH or European Standard EN 149 approved respirator when necessary.
Vacuum or sweep up material and place into a suitable disposal container. Clean up spills immediately, using the appropriate protective equipment. Avoid generating dusty conditions. Remove all sources of ignition. Provide ventilation.
Stable at room temperature in closed containers under normal storage and handling conditions.
Incompatible with bromine trifluoride, acid, oxidizers, halogenated agents, and chlorinated rubber at high temperatures.
Irritating and toxic fumes and gases, antimony/antimony oxides.
Wear a self-contained breathing apparatus in pressure-demand, MSHA/NIOSH (approved or equivalent), and full protective gear. During a fire, irritating and highly toxic gases may be generated by thermal decomposition or combustion. Use water spray to keep fire-exposed containers cool. May polymerize explosively when involved in a fire. Containers may explode when heated. Combustible material; even though it may take some effort to ignite. Extinguishing media: For small fires, use dry chemical, carbon dioxide, water spray or alcohol-resistant foam. For large fires, use water spray, fog or regular foam. Cool containers with flooding quantities of water until well after fire is out.
Containers may explode when heated.
Fire may produce irritating, corrosive and/or toxic gases.
TLV (as Sb): ppm; 0.5 mg/m3 (as TWA) (ACGIH 1991-1992).
Possible cancer hazard based on tests with laboratory animals. Prolonged inhalation may cause respiratory tract inflammation and lung damage. Prolonged or repeated skin contact may cause dermatitis. May cause chronic heart disease due to effects on the heart muscle.
Causes gastrointestinal irritation with nausea, vomiting and diarrhea. May cause slow pulse, low blood pressure, bloody stool, shallow breathing, coma, convulsions, and possible death.
Causes respiratory tract irritation. Inhalation of fumes may cause metal fume fever, which is characterized by flu-like symptoms with metallic taste, fever, chills, cough, weakness, chest pain, muscle pain and increased white blood cell count.
Causes skin irritation. Repeated or prolonged skin contact may cause antimony measles characterized by itchy papules and pustules around the sweat and fat glands.
Contact produces irritation, tearing, and burning pain. May cause conjunctivitis.
Induce vomiting. If victim is conscious and alert, give 2-4 cupfuls of milk or water. Never give anything by mouth to an unconscious person. Get medical aid immediately.
Remove from exposure to fresh air immediately. If breathing is difficult, give oxygen. Get medical aid. DO NOT use mouth-to-mouth respiration. If breathing has ceased apply artificial respiration using oxygen and a suitable mechanical device such as a bag and a mask.
Get medical aid. Flush skin with plenty of soap and water for at least 15 minutes while removing contaminated clothing and shoes. Wash clothing before reuse.
Immediately flush eyes with plenty of water for at least 15 minutes, occasionally lifting the upper and lower eyelids. Get medical aid.
USCG CHRIS Code
2825 80 00
Std. Transport #