CAS No.:10043-01-3
Molecular Formula: Al2O12S3
Molecular Weight: 342.1509
Physical and chemical properties of aluminum sulfate:
Appearance and property: white crystal, sweet.
Solubility: soluble in water, insoluble in ethanol, etc.
Melting point: 770 ° C (Dec.) (lit.)
Density: 2.71 g/ml at 25 ° C (lit.)
Water solubility: soluble
Merck:14,366
Uses and application fields of aluminum sulfate products:
[Purpose 1] it is used for paper making, water purification, mordant, tanning agent, medicine astringent, wood preservative, foam fire extinguishing agent, etc
[application 2] curing agent (excluding miscellaneous uses such as oil and water), stabilizer for pasteurization of albumin (including liquid or frozen whole eggs, protein or egg yolk). The maximum allowable dosage (FAO/WHO, 1984) is 0.036%.
[use 3] it is used in the production of artificial gemstones and high-grade ammonium alum.
[use 4] it can be prepared by the reaction of aluminum hydroxide and sulfuric acid. Or it can be prepared by decomposing alunite, kaolin and raw materials containing alumina and silicon with sulfuric acid. In the paper industry, it is used as a precipitant for rosin gum, wax lotion and other sizing materials, as a flocculant in water treatment, as an internal retention agent for foam fire extinguishers, as a raw material for manufacturing alum and aluminum white, as a raw material for oil decolorization, deodorization agent and some drugs. It can also produce artificial gemstones and high-grade ammonium alum. Products with arsenic content not more than 5mg/kg can be used as flocculants for water treatment.
Handling, storage and transportation characteristics of aluminum sulfate:
[precautions for operation] closed operation, local ventilation. Operators must receive special training and strictly abide by the operating procedures. It is recommended that operators wear self-priming filter type dust masks, chemical safety protective glasses, poison proof overalls and rubber gloves. Avoid dust generation. Avoid contact with oxidants. Handle with care to prevent package damage. Equipped with leakage emergency treatment equipment. Emptied containers may leave harmful substances.
[storage precautions] store in a cool and ventilated warehouse. Keep away from kindling and heat sources. It should be stored separately from oxidants and should not be mixed. The storage area should be equipped with appropriate materials to contain leakage.
[precautions for transportation] the package shall be complete and the loading shall be stable at the time of shipment. Ensure that the container does not leak, collapse, fall or damage during transportation. It is strictly prohibited to mix with oxidants, edible chemicals, etc. During transportation, it shall be protected from sun exposure, rain and high temperature. The vehicle shall be thoroughly cleaned after transportation.