Hyderabad
08048036175
+919848399491
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Ammonium Aluminium Sulphate

Phone Number

08048036175

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Email Address mnc.naveen@gmail.com

Mon-Thu: 10 AM - 2 PM • Fri: 3 PM - 7AM

Address Correspondence Address: Shop No. 20, 2nd Floor, Srirama Tower, Bogulkunta, Telangana

Hyderabad, India, 500001

Description

Ammonium Aluminium Sulphate, also known as ammonium alum, is a double salt of aluminium sulfate and ammonium sulfate, typically encountered as the dodecahydrate with the formula ( N H 4 ) A l ( S O 4 ) 2 ⋅ 12 H 2 O (NH 4 )Al(SO 4 ) 2 ⋅12H 2 O.​ Chemical and Physical Properties Molecular formula: ( N H 4 ) A l ( S O 4 ) 2 ⋅ 12 H 2 O (NH 4 )Al(SO 4 ) 2 ⋅12H 2 O.​ Molar mass: 453.33 g/mol (dodecahydrate).​ Appearance: Large, colorless crystals or white, odorless crystalline powder with astringent taste.​ Solubility: Freely soluble in water, insoluble in alcohol.​ Melting Point: 93.5 °C (dodecahydrate); decomposition occurs above ~250–280 °C.​ Slightly acidic aqueous solution.​ Major Uses and Applications Water purification: Flocculant aiding in the removal of suspended impurities via formation of aluminium hydroxide precipitate.​ Textile industry: Used in tanning, dyeing, and fireproofing textiles.​ Cosmetics and deodorants: Used as an astringent and antiseptic; a common ingredient in crystal deodorants.​ Baking and food: Used in baking powders and as a food additive (firming agent, acidity regulator).​ Leather, paper, and pigment industries: Retanning leather, paper sizing, pigment stabilization.​ Laboratory: Classical reagent for protein purification by precipitation and in niche analytical applications.​ Safety and Handling Irritant: Can cause irritation if inhaled, ingested, or on skin/eyes.​ Emits toxic fumes (NOx, SOx) if decomposed by heat.​ Store in a tightly closed container, protected from moisture due to hygroscopic nature.​ Ammonium aluminium sulphate is a versatile, water-soluble inorganic salt with wide utility in water treatment, industry, and laboratory processes, prized for its effectiveness, affordability, and relatively low toxicity when handled properly.​

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