- AlAluminium × 2
- OOxygen × 12
- SSulfur × 3
Overview
Aluminium sulphate, commonly called alum, is the most widely used coagulant for clarifying water. Dosed into raw water, it neutralises the charge on suspended particles so they clump together and settle, leaving clear water behind.
Our granular alum contains a minimum of 17% aluminium oxide and dissolves quickly in dosing tanks. Our team can help you run a jar test to find the right dose for your raw water.
Typical properties
Batch-specific results are shown on the Certificate of Analysis supplied with every delivery.
| Chemical formula | Al2(SO4)3 |
|---|---|
| CAS number | 10043-01-3 |
| Grade | Water treatment grade |
| Purity or strength | Min. 17% Al2O3 |
| Appearance | Off-white granules or kibbles |
| Molecular weight | 342.15 g/mol (anhydrous) |
| Density | Bulk density about 1.0 g/cm³ |
| Hazard class | Not classified as dangerous for transport |
| Minimum order | 1 bag (50 kg) |
Where Aluminium Sulphate (Alum) is used
Not sure it fits your process? Our technical team will advise on grade and dosing.
- 01Drinking water clarification
- 02Industrial and municipal wastewater
- 03Swimming pool water
- 04Paper sizing
Delivered the way you need it
Pack sizes
- 50 kg bag
- 1,000 kg big bag
Storage
Store in a dry, covered area on pallets. Keep bags closed to prevent caking.
Transport and safety
Not classified as dangerous for transport. Handle with care and follow the Safety Data Sheet.
Paperwork, ready before the delivery
Request any document and we will email it, usually the same business day.
Ready to order Aluminium Sulphate (Alum)?
Share the product, grade and volume. Our team replies within one business day with pricing, lead time and the documents you'll need.
