Formula: | Al₂(SO₄)₃ |
EC Number (EINECS): | 233-135-0 |
HS Code: | 28332200 |
UN Number: | Not classified as hazardous for transport |
IUPAC Name: | Aluminum Sulfate |
Also Known As: | Alum; Alunogen; Cake Alum |
Molecular Weight, g/mol: | 342.15 (anhydrous) |
Appearance: | White crystalline solid or powder |
Odor: | Odorless |
Melting Point, °C: | Decomposes >770 |
Boiling Point, °C: | Not applicable (decomposes) |
Density, g/cm³ (at 20°C): | 2.71 (anhydrous) |
pH (1% solution): | 2.9–3.5 |
Purity, %: | ≥98 (technical grade) |
Grades Available: | Industrial, Technical, Food Grade |
Packaging: | 25kg bags, 50kg bags, jumbo bags, bulk |
Primary Applications
Widely used as a coagulant/flocculant in drinking water and wastewater treatment
Paper sizing agent in paper and pulp industry
Mordant in textile dyeing
Secondary Applications
Used in fireproofing textiles
Soil conditioner in agriculture
Additive in construction (accelerator in concrete)
Component in deodorants and antiperspirants (pharma/cosmetic grade)
End Industries Served: Water Treatment, Pulp & Paper, Textiles, Agriculture, Construction, Cosmetics, Pharmaceuticals
Hazard Class (GHS): Eye Irritant (Category 2), Skin Irritant (Category 2)
Hazard Statements (H-Codes):
H315: Causes skin irritation
H319: Causes serious eye irritation
H335: May cause respiratory irritation
Precautionary Statements (P-Codes):
P280: Wear protective gloves/eye protection
P261: Avoid breathing dust/fumes
P305 + P351 + P338: IF IN EYES – rinse cautiously with water, remove contact lenses if possible
Storage Conditions
Store in cool, dry, ventilated area
Protect from moisture and humidity (hygroscopic)
Keep packaging tightly sealed
Transport Information
ADR/RID: Not classified as dangerous goods
IMDG: Not classified as dangerous goods
IATA: Not classified as dangerous goods
REACH Status (EU): Registered
FDA Approval: Permitted in food industry (specific grades only, as a processing aid)
ISO Certification: Available on request (ISO 9001 for manufacturing grade)
Country Standards: Meets BIS / ASTM / EU technical specifications depending on grade
Shelf Life: 1 year (stored properly, moisture-protected)
Country of Origin: [To be filled – e.g., India, China, EU]
Typical Packaging Sizes: 25kg bags, 50kg bags, jumbo bags, bulk supply
Storage Temperature: Ambient, avoid damp areas
Stability: Stable under normal storage conditions; decomposes on heating