Aluminum Sulfate

Product Details

CasNo： 16828-11-8

MF： Al2(SO4)3.16(H2O)

Appearance： powder

Delivery Time： 15 days

Packing： 25kg/bag

Purity： 99%

• Basic Information
  • Chemical Formula: Al₂(SO₄)₃
  • Molecular Weight: 342.15 (anhydrous)
  • CAS Number: 16828-11-8
  • English Name: Aluminium sulfate
• Physical and Chemical Properties
  • Appearance: Usually white, odorless, shiny crystals or powder, and it is hygroscopic.
  • Density: 2.71g/cm³
  • Melting Point: 770℃ (decomposes)
  • Solubility: It is easily soluble in water, and the aqueous solution is acidic. It is slightly soluble in ethanol. Common hydrates are Al₂(SO₄)₃·nH₂O (n = 16, 18, 27), which are not easy to weather and lose crystal water, and are relatively stable. Heating to 350℃ can remove crystal water.
• Quality Standard: According to HG/T 2225 - 2018, it generally requires that the aluminum oxide (Al₂O₃) content is ≥15.8%, the iron (Fe) content is ≤0.30%, the water - insoluble matter is ≤0.10%, and pH≥3.0.
• Uses
  • Water Treatment: As a flocculant, it is used for the treatment of drinking water, industrial water and sewage. It can make fine particles and natural colloidal particles in water aggregate into large flocs, so as to purify water quality.
  • Paper Industry: It is used as a paper sizing agent, which can enhance the water - resistance and impermeability of paper. It can also be used as a filler and precipitant.
  • Fire - fighting Field: Together with sodium bicarbonate and foaming agent, it forms a foam fire - extinguishing agent, which is the internal retention agent of foam fire extinguishers.
  • Other Uses: It can be used as a mordant, tanning agent, oil decolorizing agent, and wood preservative; It is used to manufacture artificial gemstones, high - grade ammonium alum and other aluminates; In cosmetics, it is used as an antiperspirant cosmetic raw material (astringent); It can also be used as an effective cross - linking agent for animal glue to increase the viscosity of animal glue, and can also be used as a curing agent for urea - formaldehyde adhesives.
• Packaging and Storage
  • Packaging: Generally, it is packaged in polypropylene woven bags, lined with polyethylene plastic bags. Common specifications are 25 kg/bag, 50 kg/bag or 1000 kg/bag.
  • Storage Conditions: It should be stored in a dry and well - ventilated warehouse, away from moisture and direct sunlight, and away from fire sources and heat sources.
• Safety Information
  • Health Hazards: It is irritating to eyes, skin and mucous membranes. Ingesting a large amount of aluminum sulfate can irritate the mouth and stomach. Long - term contact or intake may damage the human nervous system and skeletal system.
  • Flammability and Explosiveness Hazards: This product is non - flammable but irritating.