Product Overview
Polyaluminium Chloride Hydroxide Sulphate, commonly known as PACS, is an advanced inorganic coagulant used primarily for water and wastewater treatment. It offers efficient removal of turbidity, organic matter, and suspended solids, making it ideal for potable water treatment, industrial water clarification, and use in the paper industry.
Chemical Identity
- Chemical Name: Polyaluminium Chloride Hydroxide Sulphate
- CAS Number: 39290-78-3
- EC Number: 254-400-7
- Molecular Formula: Al(OH)aClb(SO4)c, where (a+b+2c)=3, a>1
- Typical Alumina Content (AlโOโ): min. 10%
- Basicity: min. 80%
Key Properties
| Property | Typical Value |
| Appearance | Colourless to pale yellow liquid |
| pH (5% solution at 20ยฐC) | 3.5 โ 4.5 |
| Bulk Density | ~1.20 g/cmยณ (at 20ยฐC) |
| Solubility | Completely miscible with water |
| Shelf Life | Up to 2 years under recommended storage |
Applications
โ Drinking Water Treatment
- Effective for clarification, turbidity, and color removal.
โ Industrial Water & Effluent Treatment
- Used for sludge dewatering and reduction of chemical oxygen demand (COD).
โ Paper Industry
- Acts as a retention and drainage aid, improving paper quality and reducing chemical use.
Advantages
- Forms large, dense flocs that settle quickly.
- Lower sludge volume compared to traditional alum.
- Works effectively over a wide pH range.
- Reduced residual aluminium in treated water.
Handling & Storage
- Store only in original, corrosion-resistant containers with a secure inner liner.
- Keep in a cool, well-ventilated area, away from incompatible materials.
- Shelf life under proper storage is approximately 2 years.
Health & Safety
- Classified as corrosive to metals and causes serious eye damage.
- Always use protective gloves, clothing, and eye/face protection.
- In case of contact with eyes, rinse cautiously with water for several minutes and seek medical attention immediately.