Aluminium fluoride is an inorganic substance, chemical formula AlF ≮, colorless or white crystal.Insoluble in water, acid and alkali.It is very stable and can be hydrolyzed when heated.It is mainly used for smelting aluminum.May be determined byAluminium trichlorideIt is prepared by reacting with hydrofluoric acid and ammonia.
Solubility: insoluble in water, acidalkali, insoluble in most organic solvents.[3]
chemical property
Andliquid ammoniaOr co heating with concentrated sulfuric acid, orPotassium hydroxideThere was no reaction in eutectic.It is not reduced by hydrogen, and does not decompose but sublimate under strong heat. Its properties are very stable.When heated to 300-400 ℃, it can be partially decomposed intoHydrogen fluorideandalumina。[4]
Mainly used for aluminum smelting to reduce melting point and improveelectrolyteThe conductivity of.alcoholUsed as a side fermentation in productioninhibitor。Also used asCeramic glazeandenamelGlaucousFluxAnd enamel composition.It can also be used for smelting nonferrous metalsflux。[4]
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Hazard Overview
Health hazard: the decomposition product hydrogen fluoride is irritant, which can cause irritation symptoms of eyes and respiratory tract mucosa, and can occur in serious casesbronchitis, pneumonia, and even reflex asphyxia.
Flammability hazard: The product is incombustible, toxic, irritant, and seriously damages mucous membrane, upper respiratory tract, eyes and skin.[3]
First aid measures
Skin contact: Take off the contaminated clothes and wash the skin thoroughly with soapy water and clean water.
Eye contact: lift the eyelid, use flowing water ornormal salinerinse.Get medical attention.
Inhalation: quickly leave the site to a place with fresh air.Keep the respiratory tract unobstructed.asdyspnea, give oxygen.If breathing stops, perform artificial respiration immediately.Get medical attention.
Ingestion: drink enough warm water to induce vomiting.Get medical attention.[3]
Fire fighting measures
Hazard characteristics: It can react violently with alkali metals.
Extinguishing method: put out the fire with a large amount of water.Use foggy water to disperse smoke and irritating gases.[3]
Emergency Management
Emergency treatment: isolate the leakage contaminated area and restrict access.It is recommended that emergency handling personnel wearDust mask(Full face mask), wear anti-virus clothing.Do not touch the leakage directly.
Small amount of leakage: avoid raising dust and collect it in a dry, clean and covered container with a clean shovel.
Large amount of leakage: collect and recycle or transport to waste disposal site for disposal.[3]
Disposal and storage
Operation precautions: closed operation, local exhaust.Operators must be specially trained and strictly abide by the operating procedures.Recommended for operatorsSelf suction filtering dust maskWear chemical safety goggles, gas permeable protective clothing and latex gloves.Avoid dust generation.Avoid contact with acids.Load and unload gently during transportation to prevent damage to packaging and containers.Provide leakage emergency treatment equipment.Empty containers may leave harmful substances.
Precautions for storage: store in a cool and ventilated warehouse.Packing and sealing.It shall be stored separately from acids and edible chemicals, and mixed storage is strictly prohibited.The storage area shall be equipped with appropriate materials to contain leakage.[3]
