Aluminium sulphate (alum) is the most widely used primary coagulant in drinking water and wastewater treatment, promoting floc formation and suspended solids removal.
Inquire About This ProductAluminium Sulphate (Alum) is an inorganic salt used as a primary coagulant in water and wastewater treatment. When dosed into water, it hydrolyses to form aluminium hydroxide floc, which adsorbs and destabilises colloidal particles, bacteria and organic matter for efficient removal by sedimentation and filtration.
Our water treatment grade aluminium sulphate is manufactured to consistent specification and conforms to SANS 1183 requirements for potable water applications. Supplied as granules, powder or lumps to suit dosing equipment. Available with NSF/SANS compliance documentation.
| Chemical Name | Aluminium Sulphate |
| CAS Number | 10043-01-3 |
| Molecular Formula | Al₂(SO₄)₃ |
| Purity | 17% Al₂O₃ min |
| Appearance | White Granules / Lumps |
| Al₂O₃ Content | 17% min |
| Fe (Iron) | ≤ 0.005% |
| pH (1% solution) | 3.0 – 4.0 |
| Water Insoluble | ≤ 0.1% |
| UN Number | Not regulated |
| Hazard Class | Not classified as dangerous goods |
Available in moisture-resistant packaging. Custom options on request.
| 25 kg Bag | PP woven bag |
| 1000 kg Bag | FIBC / big bag |
| Bulk liquid | Tanker delivery (solution) |
| Storage | Cool, dry, well-ventilated area away from incompatible materials |
Contact our team for pricing, availability and technical data sheets.
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