Poly Aluminium Chloride (PAC)
High-Efficiency Industrial & Potable-Grade Coagulant – Reliable Bulk Supplier for Water Treatment, Effluent Systems, and Industrial Process Applications
Poly Aluminium Chloride (PAC) is a pre-polymerized inorganic coagulant engineered for high-efficiency solid–liquid separation, turbidity removal, and colloidal destabilization across municipal, industrial, and process water systems. Compared with conventional aluminium salts, PAC provides superior charge neutralization, rapid floc formation, lower sludge generation, and broader pH tolerance. It is widely specified in water treatment plants, effluent treatment systems, paper processing, textile operations, mining circuits, and chemical manufacturing where consistent coagulation performance is required.
Natraj Chem supplies industrial-grade and potable-grade Poly Aluminium Chloride sourced through validated production partners operating under controlled manufacturing conditions. With more than four decades of experience handling aluminium-based chemistries, supply specifications are aligned with industrial dosing requirements, plant compatibility, and regulatory compliance.
Chemical Identity
| Parameter | Details |
|---|---|
| Chemical Name | Poly Aluminium Chloride |
| Synonyms | PAC, Polyaluminium Chloride, Aluminium Chlorohydrate (variant forms) |
| Chemical Formula | Alₙ(OH)ₘCl₍₃ₙ₋ₘ₎ |
| CAS Number | 1327-41-9 |
| Molecular Nature | Polymeric inorganic coagulant |
| Appearance | Yellow powder, off-white powder, or clear to amber liquid |
| Odor | Odorless |
| Solubility | Completely soluble in water |
| Ionic Character | Cationic |
| Basicity Range | Typically 30–85% |
Technical Properties
Precise physical and chemical characteristics engineered for consistent coagulation performance.
| Property | Typical Range |
|---|---|
| Al₂O₃ Content | 9–31% (grade dependent) |
| Basicity | 40–85% |
| pH (1% solution) | 3.5 – 5.0 |
| Insoluble Matter | ≤ 0.5% |
| Chloride Content | ≤ 35% |
| Bulk Density (Powder) | 0.6 – 0.8 g/cm³ |
| Specific Gravity (Liquid) | 1.15 – 1.40 |
| Viscosity | Low to moderate |
| Hydrolysis Behaviour | Rapid polymeric hydrolysis |
| Floc Formation | Fast, dense, settleable |
Values vary according to drinking-water, industrial, or high-basicity formulations.
Key Functional Benefits
Industrial Applications
PAC is trusted across diverse sectors for proven clarification and coagulation performance.
Grades / Specifications Available
Natraj Chem supplies PAC in multiple standardized grades to match your specific process conditions and regulatory requirements.
Need Help Selecting the Right Grade?
Our technical team provides expert consultation on grade selection based on your water chemistry, dosing requirements, and regulatory compliance needs — including jar test protocols.
Quality Control Parameters
Each batch is evaluated against defined industrial acceptance criteria before release:
Packaging & Supply
Available packaging formats designed for safe handling and storage across all order volumes:
BAG
WALL
BAG
& IBC
TANKER
Supply scheduling supports contract manufacturing demand and recurring industrial procurement cycles.
Storage & Handling
Proper storage and handling guidelines for optimal product performance:
Regulatory / Safety Information
Poly Aluminium Chloride is classified as a non-flammable inorganic chemical. Complete documentation is available for all supply grades:
Safety Data Sheet (SDS)
Complete hazard information, exposure limits, and first-aid guidance for workplace safety compliance across all handling scenarios.
Technical Data Sheet (TDS)
Detailed grade specifications and performance characteristics for technical evaluation and procurement decision-making.
Certificate of Analysis (COA)
Batch-specific quality verification with test results and compliance confirmation issued for every individual shipment.
Potable Grade Compliance
Potable grades comply with applicable water treatment chemical standards and regulatory declarations are supplied where specified.
Users must follow local occupational exposure limits and standard industrial chemical handling procedures.
Technical Support & Documentation
Technical assistance is handled by personnel familiar with industrial water treatment specifications and coagulation performance criteria:
Selection
Optimization
Matching
Review
Documentation
Planning
Grade Selection
Expert guidance on choosing the optimal PAC grade for your specific water chemistry and treatment objectives.
Dosage Optimization
Jar test optimization protocols to determine optimal dosage for turbidity, alkalinity, and contaminant load.
Specification Matching
Customized aluminium content, basicity, and chloride ratio to meet your precise technical requirement sheets.
Compatibility Recommendations
Assessment of PAC compatibility with polymer flocculants, oxidants, and filtration media in your system.
Regulatory Documentation
Complete COA, TDS, SDS, and regulatory declarations support for procurement and compliance teams.
Bulk Procurement Planning
Strategic sourcing and logistics coordination for large-volume treatment plants requiring uninterrupted supply.
Frequently Asked Questions
It is primarily used as a coagulating agent for water purification, wastewater treatment, and industrial clarification processes including textile, paper, mining, and petrochemical applications.
PAC is pre-polymerized, providing faster floc formation, lower dosage requirements, broader pH tolerance, and reduced sludge generation compared with conventional aluminium sulfate.
It performs effectively between pH 5.0 and 9.0, depending on formulation and water chemistry, making it suitable for a wide range of treatment scenarios.
Medium to high basicity grades (60–85%) are typically preferred for industrial effluent systems and low-alkalinity waters requiring enhanced coagulation performance.
Yes, when supplied in certified potable-grade specifications meeting applicable regulatory standards for water treatment chemicals.
Optimal dosage is established through jar testing based on turbidity, alkalinity, and contaminant load specific to your water source and treatment objectives.
Yes, it generates denser flocs which settle faster and produce significantly less sludge than traditional coagulants, reducing dewatering costs and disposal load.
Typically 12–24 months when stored in sealed containers under recommended dry conditions away from moisture and temperature extremes.
Yes, it is commonly combined with anionic or nonionic polymers to enhance settling efficiency and improve overall treatment performance.
Liquid grades are preferred for automated dosing systems, while powder grades offer easier storage, transport, and flexibility for varied dosing setups.
Get Technical Data & Custom Quote Today
Ready for potable-grade certification, industrial-scale volumes, or tailored coagulant specifications? Our team provides fast responses with full documentation — no obligation.
- Technical datasheets (TDS) & Safety Data Sheets (SDS)
- Certificate of Analysis (COA) samples
- Competitive bulk pricing & volume quotes
- Jar test optimization protocols
- Distributor / reseller partnership opportunities
- OEM / custom specification inquiries