Product Information
Chemical Name: Aluminum Ammonium Sulfate Dodecahydrate
Synonyms: Ammonium Alum, Ammonia Alum
CAS No.: 7784-26-1EINECS: 232-055-3
Molecular Formula: NH₄Al(SO₄)₂·12H₂O
Molecular Weight: 453.33
Grade: Food grade, industrial grade
Chemphysical Properties
Appearance: White transparent crystal or crystalline powder
Odour: Odourless, slight astringent taste
Density: 1.64 g/cm³Melting point: 93.5 °C
Solubility: Soluble in water, glycerol; insoluble in ethanol
Feature: Aqueous solution is acidic; loses crystal water when heated
Quality Specification
| Item | Specification |
|---|---|
| Assay (NH₄Al(SO₄)₂·12H₂O) | ≥99.0% |
| Water Insoluble Matter | ≤0.05% |
| Fe | ≤0.001% |
| Heavy Metal (Pb) | ≤0.001% |
| Arsenic (As) | ≤0.0002% |
| pH (5% solution) | 3.0–4.0 |
Use & Application
Water treatment coagulant for drinking water & wastewater clarification
Textile industry: Mordant for dyeing
Food additive: Stabilizer and leavening auxiliary
Leather tanning, flame retardant raw material
Papermaking, cosmetics astringent and printing auxiliary
Packing
25kg woven bag with PE inner liner.
Delivery & Storage
Storage: Keep sealed, cool dry warehouse, avoid moisture and high temperature.
Transport: Ordinary chemical, prevent package damage.
Shelf life: 24 months under proper storage.
chemical.tnj
+8618949823763
tnjchem
2881500864