NSF Grade PolyDADMAC Liquid Cationic Coagulant CAS 26062-79-3 for Drinking Water Treatment
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Product Overview
PolyDADMAC, also known as PDADMAC or Poly(dimethyldiallylammonium chloride), is a liquid cationic polymer with strong charge neutralization ability. It is widely used as a coagulant in drinking water treatment, wastewater treatment, industrial clarification, sludge dewatering, mining, paper-making, textile, and oil industry applications.
In drinking water treatment plants, raw water may contain clay, silt, organic matter, algae, colloids, and fine suspended particles. These impurities are often negatively charged and difficult to remove by natural settling alone. Bluwat PolyDADMAC Liquid Cationic Coagulant provides strong positive charge to neutralize these particles, helping them aggregate into larger flocs for easier sedimentation, flotation, or filtration.
Bluwat NSF Grade PolyDADMAC is designed for drinking water clarification applications where stable quality, effective coagulation, and regulatory documentation are important. For potable water projects, customers should confirm the applicable certificate, approved grade, and maximum use level according to local drinking water regulations before application.
Application in Drinking Water Treatment
PolyDADMAC Liquid Cationic Coagulant can be used in drinking water plants to improve raw water clarification and reduce turbidity before filtration or disinfection.
Typical applications include:
Raw water clarification
Turbidity reduction
Suspended solids removal
Colloid destabilization
Coagulation and flocculation process improvement
Sedimentation tank performance improvement
Filter load reduction
Algae and organic particle removal support
Municipal drinking water treatment
Surface water treatment
Industrial potable water pretreatment
Key Benefits
NSF Grade for Drinking Water Applications
Bluwat PolyDADMAC can be supplied for drinking water treatment projects requiring NSF-grade coagulant solutions. It is suitable for raw water clarification and potable water treatment systems when used according to approved dosage and local regulatory requirements.
High Cationic Charge Density
PolyDADMAC provides strong positive charge, helping neutralize negatively charged colloids, clay, organic matter, and suspended solids in raw water.
Improved Turbidity Removal
By promoting particle destabilization and floc formation, PolyDADMAC helps reduce turbidity and improve clarified water quality.
Better Floc Formation
The product supports the formation of larger and more settleable flocs, improving sedimentation, clarification, and filtration performance.
Can Reduce Inorganic Coagulant Demand
PolyDADMAC can be used alone or combined with inorganic coagulants such as Polyaluminium Chloride. In some systems, it may help reduce the dosage of alum or ferric salts after proper testing.
Effective at Low Dosage
Due to its high charge density, PolyDADMAC can achieve efficient coagulation at relatively low dosage when the correct grade and dosing point are selected.
Easy Liquid Dosing
Liquid PolyDADMAC is convenient for dilution, pumping, and continuous dosing in municipal water treatment plants.
Wide pH Adaptability
Bluwat liquid PolyDADMAC is adaptable to a wide pH range, making it flexible for different raw water conditions.
Working Principle
PolyDADMAC improves drinking water clarification mainly through charge neutralization and floc formation.
Treatment mechanism:
- Raw water contains negatively charged colloids, clay, silt, algae, and suspended particles.
- PolyDADMAC provides strong cationic charge to neutralize particle surfaces.
- Destabilized particles begin to collide and aggregate.
- Larger flocs are formed during mixing and flocculation.
- Flocs are removed by sedimentation, flotation, or filtration.
- Clarified water quality improves before disinfection and final treatment.
Recommended Treatment Process
Raw water intake
↓
Water quality analysis and turbidity check
↓
PolyDADMAC dilution
↓
PolyDADMAC dosing and rapid mixing
↓
Optional PAC or other coagulant dosing if required
↓
Slow mixing for floc growth
↓
Sedimentation or clarification
↓
Filtration
↓
Disinfection and final water treatment
Product Specifications
Product Name: NSF Grade PolyDADMAC Liquid Cationic Coagulant
Series: BLU DA Series PolyDADMAC Liquid Grade
Chemical Name: Poly(dimethyldiallylammonium chloride)
Short Name: PolyDADMAC / PDADMAC
CAS Number: 26062-79-3
Appearance: Colorless to light yellow liquid
Solid Content: 20–50%
pH Value: 3.0–7.0
Specific Gravity at 25°C: 1.01–1.10
Charge Type: Cationic
Relative Molecular Weight: Low, medium, high, and very high grades available
Brookfield Viscosity at 25°C: Below 200 cps to above 15000 cps depending on grade
Application Fields: Drinking water treatment, wastewater treatment, sludge dewatering, mining, paper-making, textile, oil industry, color removal, and industrial clarification
Package: 25L plastic drum, 200L plastic drum, or 1000L IBC drum
Available PolyDADMAC Liquid Grades
DA 20% Series
DA 201
Low molecular weight, viscosity below 200 cps
DA 202
Medium molecular weight, viscosity 200–700 cps
DA 203
Medium molecular weight, viscosity 700–1000 cps
DA 204
High molecular weight, viscosity 1000–2000 cps
DA 205
Very high molecular weight, viscosity 2000–3000 cps
DA 40% Series
DA 401
Low molecular weight, viscosity below 500 cps
DA 402
Medium molecular weight, viscosity 500–1000 cps
DA 403
Medium molecular weight, viscosity 1000–3000 cps
DA 404
High molecular weight, viscosity 3000–5000 cps
DA 405
High molecular weight, viscosity 5000–8000 cps
DA 406
Very high molecular weight, viscosity 8000–12000 cps
DA 407
Very high molecular weight, viscosity 12000–15000 cps
DA 408
Very high molecular weight, viscosity above 15000 cps
DA 45% Series
DA 451
High molecular weight, viscosity 8000–12000 cps
DA 50% Series
DA 501
Low-medium molecular weight, viscosity 1000–2000 cps
DA 502
Medium molecular weight, viscosity 2000–3000 cps
DA 503
High molecular weight, viscosity 3000–5000 cps
DA 504
High molecular weight, viscosity 5000–8000 cps
DA 505
Very high molecular weight, viscosity 8000–12000 cps
DA 506
Very high molecular weight, viscosity 12000–15000 cps
DA 507
Very high molecular weight, viscosity above 15000 cps
Application Method
For drinking water treatment, PolyDADMAC should be selected according to raw water turbidity, organic content, suspended solids concentration, temperature, pH value, treatment process, and target clarified water quality.
When used alone, PolyDADMAC is normally diluted to 0.5–5% concentration based on solid content before dosing.
The optimum dosage should be confirmed by jar testing and plant trial. The dosing point and mixing speed should be carefully controlled to ensure uniform chemical dispersion and prevent floc breakage after flocs are formed.
For potable water systems, the product grade, certificate scope, and maximum use level should be checked before commercial application.
Product Selection Guidance
For low to medium turbidity raw water, low to medium viscosity PolyDADMAC grades can be tested first for fast charge neutralization and easy dosing.
For high turbidity water, algae-containing water, or difficult colloidal particles, medium to high molecular weight grades may provide stronger floc formation.
For systems using PAC, alum, or ferric salts, PolyDADMAC can be tested as a coagulant aid to improve floc quality, reduce turbidity, and optimize total chemical cost.
Final product selection should be based on turbidity removal, floc size, settling speed, filter performance, residual control, dosage, and total operating cost.
Use with PAC or Other Coagulants
PolyDADMAC can be used alone or together with inorganic coagulants such as Polyaluminium Chloride.
PolyDADMAC mainly provides strong charge neutralization.
PAC mainly provides inorganic coagulation and hydroxide floc formation.
In many drinking water treatment systems, combined use can improve floc formation, reduce turbidity, and support more stable clarification. The best dosage and sequence should be confirmed through jar testing.
Packaging and Storage
Bluwat PolyDADMAC Liquid is available in:
25L plastic drums
200L plastic drums
1000L IBC drums
Store the product in original containers in a cool and dry place. Keep away from heat, flame, and direct sunlight. Refer to the TDS, MSDS, product label, and certificate documents for detailed storage, handling, and drinking water application requirements.
Why Choose Bluwat NSF Grade PolyDADMAC?
Bluwat Chemicals supplies water treatment chemicals for municipal drinking water, industrial wastewater, sludge dewatering, mining, paper-making, and other clarification processes.
Advantages:
NSF grade PolyDADMAC option for drinking water treatment
CAS No. 26062-79-3
High charge density cationic coagulant
20–50% liquid grades available
Suitable for turbidity removal and raw water clarification
Can be used alone or with PAC
Easy dilution and continuous dosing
COA, TDS, MSDS, and certificate documents available
Technical support for jar testing and dosage optimization
Stable export supply for water treatment projects
FAQ
What is the CAS number of PolyDADMAC?
The CAS number of PolyDADMAC is 26062-79-3.
Is PolyDADMAC suitable for drinking water treatment?
Yes. PolyDADMAC is widely used in drinking water treatment for raw water clarification, turbidity removal, and suspended solids reduction. For potable water projects, the applicable NSF grade and dosage limit should be confirmed before use.
What is the function of PolyDADMAC in drinking water treatment?
PolyDADMAC neutralizes the negative charge of colloids and suspended particles, helping them form larger flocs that are easier to remove by sedimentation, flotation, or filtration.
Can PolyDADMAC be used with PAC?
Yes. PolyDADMAC can be used alone or together with PAC to improve coagulation performance, floc formation, and clarification efficiency.
What solid content is available?
Bluwat PolyDADMAC Liquid is available in 20%, 40%, 45%, and 50% solid content series.
What dilution concentration is recommended?
When used alone, PolyDADMAC is commonly diluted to 0.5–5% concentration based on solid content before dosing.
How should the dosage be determined?
Dosage should be determined through jar testing and plant trials based on raw water turbidity, pH, organic content, floc formation, clarified water quality, filtration performance, and regulatory requirements.