Polyaluminium Chloride PAC Powder Basicity 45–55% for Drinking Water Treatment
Product Overview
PAC Powder Basicity 45–55% is a high purity Polyaluminum Chloride powder designed for drinking water treatment and raw water clarification.
Basicity is one of the important technical indicators of PAC powder. It affects coagulation performance, floc formation and water treatment adaptability. For drinking water treatment, PAC powder with suitable basicity, high active content and low insoluble matter can help achieve stable clarification performance.
Bluwat PAC-01 is a white spray dried PAC powder with basicity of 45–55%, Al2O3 content of at least 30% and insoluble matter of no more than 0.1%. It is commonly used for drinking water treatment, potable water treatment, surface water clarification and high clarity water purification.
After dosing into raw water, PAC powder helps destabilize suspended particles and colloids. These fine particles then form larger flocs, which can be removed by sedimentation, flotation or filtration.

What Basicity Means in PAC Powder
Basicity refers to the degree of polymerization and alkalinity characteristics of Polyaluminum Chloride.
In water treatment, suitable basicity helps PAC powder perform well during coagulation. It supports charge neutralization, floc formation and clarification efficiency.
For drinking water treatment, a controlled basicity range is important because raw water quality, pH, alkalinity and turbidity may change during plant operation.
PAC-01 with 45–55% basicity is suitable for drinking water and potable water applications where stable quality, white powder appearance and low insoluble matter are required.
Why PAC Powder Basicity 45–55% Is Used for Drinking Water
Raw water used for drinking water production may contain clay particles, suspended solids, algae, organic matter, colloids and fine impurities. Many of these particles are too small to settle naturally.
PAC powder helps neutralize the surface charge of these particles. Once the particles lose stability, they begin to form micro flocs. During slow mixing, these micro flocs grow into larger flocs and become easier to separate.
PAC powder with 45–55% basicity is suitable for drinking water treatment because it provides controlled coagulation performance, good solubility and cleaner clarification.
It is commonly used before sedimentation and filtration to reduce turbidity and improve water clarity.
Key Advantages
PAC powder with 45–55% basicity supports stable coagulation performance in drinking water treatment.
PAC-01 is supplied as white powder and is suitable for drinking water clarification and high purity water treatment applications.
With Al2O3 content of at least 30%, PAC powder provides strong active content for turbidity removal and coagulation.
PAC-01 has insoluble matter of no more than 0.1%, supporting clean dissolution and stable dosing operation.
Spray dried PAC powder dissolves well in water and can be prepared as a dosing solution for continuous water treatment systems.
PAC powder helps remove turbidity caused by suspended solids, clay particles, colloids and fine impurities in raw water.
After proper dosing and mixing, PAC powder helps form visible and compact flocs for easier sedimentation and filtration.
Bluwat supplies PAC powder directly from factory with stable quality, 25 kg bag packaging and export service.
Technical Specifications
Product Name: PAC Powder Basicity 45–55%
Chemical Name: Polyaluminum Chloride
Common Name: PAC Powder
Recommended Grade: PAC-01
Appearance: White Powder
Al2O3 Content: ≥30%
Basicity: 45–55%
Insoluble Matter: ≤0.1%
Type: Spray Dried
Main Application: Drinking Water Treatment
Other Applications: Potable Water Treatment, Raw Water Clarification, Water Purification
Packaging: 25 kg bags
Main Applications
PAC powder basicity 45–55% is used in drinking water treatment plants to improve coagulation, reduce turbidity and support clearer water before filtration and disinfection.
PAC-01 white powder helps clarify raw water by removing suspended solids, colloids and fine impurities.
PAC powder can be used for river water, lake water, reservoir water and surface water clarification.
Surface water may contain clay, algae, organic matter and fine particles. PAC powder helps these impurities form larger flocs for easier removal.
In low turbidity raw water, fine particles may remain stable and difficult to settle. PAC powder helps improve particle aggregation and filtration performance.
During rainy seasons or water quality fluctuations, PAC powder helps improve floc formation and reduce turbidity load before filtration.
PAC-01 can also be used in some industrial water pretreatment systems where white powder, low insoluble matter and high clarity are required.
How PAC Powder Basicity 45–55% Works
PAC powder is normally dissolved in clean water before dosing.
After the prepared PAC solution is added into raw water, it disperses quickly under rapid mixing. PAC contacts suspended solids, colloids and fine impurities.
During chemical coagulation, PAC neutralizes the surface charge of these particles. Once the particles lose stability, they begin to form micro flocs.
During slow mixing, micro flocs grow into larger and stronger flocs. These flocs can then be removed through sedimentation, dissolved air flotation or filtration.
This process helps reduce turbidity, improve water clarity and support stable downstream filtration and disinfection.
Suggested Dosing Process
A common drinking water treatment process using PAC powder includes the following steps.
First, prepare PAC powder solution with clean water.
Second, dose the PAC solution into raw water under rapid mixing.
Third, allow PAC to fully contact suspended solids and colloidal particles.
Fourth, continue slow mixing to support floc growth.
Fifth, allow the formed flocs to settle in the sedimentation tank.
Finally, send the clarified water to filtration and disinfection.
The actual dosage should be confirmed by jar testing. Raw water turbidity, pH, alkalinity, temperature, organic matter and treatment target can all affect the best dosage.
PAC Basicity and Water Treatment Performance
Basicity can influence how PAC powder reacts in water.
A suitable basicity range helps PAC powder provide stable coagulation and floc formation. For drinking water treatment, 45–55% basicity is commonly used with white PAC powder where cleaner appearance, low insoluble matter and stable raw water clarification are required.
However, the best PAC grade should still be selected according to actual water quality, treatment target and jar test result.
PAC-01 Compared with Other PAC Grades
PAC-01 is white powder with basicity of 45–55%, Al2O3 content of at least 30% and insoluble matter of no more than 0.1%. It is commonly used for drinking water treatment and potable water clarification.
PAC-02 is yellow powder with basicity of 45–85%, Al2O3 content of at least 30% and insoluble matter of no more than 0.1%. It is widely used for industrial wastewater and municipal wastewater treatment.
PAC-031 is yellow powder with basicity of 50–90%, Al2O3 content of at least 29% and insoluble matter of no more than 1.5%. It is suitable for industrial wastewater, sewage treatment and cost effective coagulation.
For drinking water treatment, PAC-01 is usually recommended when white powder appearance, low insoluble matter and high purity are important.
Packaging and Storage
Bluwat PAC Powder Basicity 45–55% is packed in 25 kg bags with inner plastic bag and outer woven bag.
Storage recommendations:
Store in a cool, dry and well ventilated warehouse.
Keep away from moisture and direct sunlight.
Keep bags sealed before use.
Avoid exposure to heat and incompatible materials.
Use the product promptly after opening.
Proper storage helps maintain powder quality, solubility and coagulation performance.
Why Choose Bluwat PAC Powder
Bluwat Chemicals is a professional manufacturer and exporter of water treatment chemicals. We supply PAC powder, PAM flocculant, PolyDADMAC, Polyamine, water decoloring agent and other chemicals for water and wastewater treatment.
Bluwat PAC-01 is produced under stable quality control to support consistent Al2O3 content, controlled basicity, low insoluble matter and reliable coagulation performance.
With factory direct supply, 25 kg bag packaging, container loading experience and technical support, Bluwat can help customers select suitable PAC grades according to actual raw water quality and drinking water treatment requirements.
Conclusion
PAC Powder Basicity 45–55% is a high purity Polyaluminum Chloride coagulant suitable for drinking water treatment and raw water clarification. It helps remove turbidity, suspended solids, colloids and fine impurities through chemical coagulation and floc formation.
With white powder appearance, 30% Al2O3 content, low insoluble matter and stable spray dried quality, PAC-01 supports clearer water and more stable potable water treatment operation.
Bluwat supplies PAC powder basicity 45–55% with factory direct supply, export packaging and technical support for global drinking water treatment customers.










