BENZOYL PEROXIDE [(C₆H₅CO)₂O₂]

SYNONYMS
Benzoic acid peroxide, benzoyl superoxide, dibenzoyl peroxide, di(benzene carbonyl) peroxide, peroxyde de benzole.
CHARACTERISTICS
Colourless, odourless solid.
INCOMPATIBILITY
Reacts violently with organic and inorganic acids, alcohols, amines, metallic naphthenates.
Reacts violently with some polymerisation accelerators, dimethylaniline, chloroform, dimethyl sulphide, methyl methacrylate. Reacts violently with combustible substances.
HEALTH HAZARD DATA
This is a flammable substance and should never be handled close to heat or a naked flame. It explodes when heated and unstable peroxides can be formed on storage and when the container is exposed to light. Because of the explosive nature of the material when dry it is kept under water. It is moderately toxic and an eye and skin irritant. Prolonged exposure to skin can cause dermatitis. Inhalation causes irritation to the mucous membranes with asthmatic effects. Ingestion causes irritation to the mucous membranes with associated gastric disturbances.
HANDLING and GENERAL PRECAUTIONS
Keep away from heat, explodes on heating.
Avoid skin and eye contact.
Avoid inhalation or ingestion.
Explosive when dry, keep under water.
Wear protective clothing. A long sleeved laboratory coat or gown with elasticised wrist bands, rubber or PVC gloves and safety goggles as a minimum standard.
TREATMENTS
Skin - Immediately wash the affected area with soap or mild detergent and large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If irritation persists or dermatitis develops seek medical advice. Remove contaminated clothing and shoes and decontaminate before re-use.
Eyes - Immediately wash the affected eye with large amounts of water until all evidence of the chemical has been removed (approximately 15 minutes). If irritation or pain persists seek immediate medical attention.
Inhalation - Remove from the area of exposure to fresh air. Keep warm and allow to rest. Seek immediate medical advice.
Ingestion - Never give anything by mouth if the victim is losing consciousness, is unconscious or convulsing. Rinse the mouth thoroughly with water. Give water to drink. INDUCE VOMITING by touching a finger to the back of the throat or by administering Ipecac syrup. Seek immediate medical attention.
STORAGE
Store in a cool, dry atmosphere away from heat and incompatible substances. Keep the container tightly closed. Ensure that the solid remains damp whilst in storage.
DISPOSAL
Moisten well with water and mix with plenty of damp sand. Sweep up while wet and bury at least 60 cm deep, away from water sources. Spillages should be dealt with immediately and the substance never allowed to dry. The material should never be swept up while dry as frictional heat could cause an explosion.
ENVIRONMENT
No data available.

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