Anhydrous Aluminum Ammonium Sulfate CAS 7784-25-0, also known as burnt ammonium alum, is white crystalline powder. It is the dehydrated form of ammonium alum, with strong coagulation and astringent properties, widely used for water treatment, textile mordant, leather tanning and flame retardant raw material. TNJ Chemical is the leading manufacturer and exporter since 2001. We guarantee high quality, competitive price, stable supply, fast delivery and tech support etc. To find more, please contact sales@tnjchem.com
Product Information
Chemical Name: Aluminum Ammonium Sulfate (Anhydrous)
Synonyms: Burnt Ammonium Alum, Exsiccated Ammonium Alum
CAS No.: 7784-25-0EINECS: 232-055-3
Molecular Formula: NH₄Al(SO₄)₂
Molecular Weight: 237.15Grade: Industrial grade, food processing grade
Chemphysical Properties
Appearance: White or off-white crystalline powder
Odour: Odourless, astringent taste
Density: 2.45 g/cm³Melting point: Decomposes on heating
Solubility: Soluble in water, slowly soluble, insoluble in ethanol
Feature: Hygroscopic, aqueous solution shows weak acidity
Quality Specification
| Item | Specification |
|---|---|
| Assay (NH₄Al(SO₄)₂) | ≥99.0% |
| Water Insoluble Matter | ≤0.05% |
| Iron (Fe) | ≤0.001% |
| Heavy Metal (Pb) | ≤0.001% |
| Arsenic (As) | ≤0.0002% |
| Loss on ignition | ≤0.8% |
Use & Application
Water treatment coagulant for drinking water and wastewater clarification
Textile mordant for dyeing and printing
Leather tanning auxiliary, flame retardant additive
Food processing auxiliary, powder-type astringent raw material
Papermaking sizing agent and cosmetic raw material
Packing
25kg woven bag with PE inner liner.
Delivery & Storage
Storage: Hermetically sealed, cool dry warehouse, strictly avoid moisture absorption.
Transport: Ordinary chemical, prevent package breakage and rain.
Shelf life: 24 months under proper sealed storage.
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