Aluminium Sulphate CP
Aluminium sulphate CP is widely used in municipal and industrial water treatment for coagulation and sediment removal.
Aluminium Sulphate CP (Al2(SO4)3⋅18H2Ocap A l sub 2 open paren cap S cap O sub 4 close paren sub 3 center dot 18 cap H sub 2 cap O𝐴𝑙2(𝑆𝑂4)3⋅18𝐻2𝑂, Chemically Pure grade) is a white, crystalline hydrated solid widely used as a coagulating agent in water treatment to remove impurities. It serves as a laboratory chemical for flocculation, paper manufacturing, dye mordanting, and controlling soil pH. The chemical causes serious eye damage and irritation.
Key Characteristics and Applications:
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- Chemical Formula: Al2(SO4)3⋅18H2Ocap A l sub 2 open paren cap S cap O sub 4 close paren sub 3 center dot 18 cap H sub 2 cap O 𝐴𝑙2(𝑆𝑂4)3⋅18𝐻2𝑂 (Octadecahydrate).
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- Function: Acts as a coagulant to neutralize negative charges on colloids, allowing particles to clump and settle.
- Uses:
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- Water Treatment: Purification of drinking water and wastewater.
- Gardening: Acidifying soil for plants like hydrangeas.
- Industry: Paper sizing, fixing dyes in textiles, and fire retardant.
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- Safety Information: Causes serious eye damage (H318) and may be corrosive to metals (H290). Requires eye protection and careful handling to avoid dust inhalation.
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Commonly Available Forms:
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- Aluminium Sulphate CP 500g: Commonly found in laboratory supply stores.
- Aluminium Sulphate Powder/Granular: Used in larger quantities for water treatment and gardening.
For high-purity laboratory use, “AR” (Analytical Reagent) grade may also be available, but “CP” (Chemically Pure) is standard for many industrial and general lab applications.
