Polydimethyldiallylammonium Chloride (PDADMAC)

As a leading Chinese manufacturer with 28 years of experience in producing water treatment chemicals, we supply high-quality PDADMAC (Polydiallyldimethylammonium Chloride) to customers worldwide.

What Is PDADMAC?

PDADMAC is a strong cationic liquid polymer widely used in drinking water treatment, industrial wastewater, and paper-making processes.
Its advantages include:

     ● High cationic charge

     ● Fast demulsifying and flocculation ability

     ● Safe, non-toxic, and non-corrosive

     ● Wide pH adaptability

     ● Excellent compatibility with PAC and PAM

It is often used as a fast-acting cationic coagulant aid.

Main Components of PDADMAC

The active ingredient is the polymer of dimethyldiallylammonium chloride, with active content typically 20%–50%. Its strong cationic nature allows rapid charge neutralization and dense floc formation.

Applications of PDADMAC in Water Treatment

Demulsifier for Oily Wastewater

     ● Metalworking wastewater

     ● Emulsified oil wastewater

     ● Food & grease wastewater

     ● Chemical wastewater

Coagulant Aid

     ● PDADMAC + PAC → Improved turbidity removal

     ● PDADMAC + PFS/PAFC → Better color removal

Paper Retention and Drainage Aid

     ● Improves fiber retention and paper strength.

Drinking Water Treatment

     ● Enhances clarity and reduces overall coagulant dosage.

Chemicals Commonly Used Together With PDADMAC

Usage and Storage Notes

Usage

    → Dilute 3–10 times before dosing for better dispersion

    → Do not mix directly with anionic PAM

    → Adjust dosage according to jar tests

Storage

    → Store in cool and dry conditions

    → Avoid freezing in winter

    → Keep containers sealed to prevent contamination

We also offer free jar tests and dosing recommendations.

FAQ

Q1 : What types of wastewater are suitable for PDADMAC?

A1 : Food, dairy, chemical, paper, oily wastewater, and more.

Q2 : Can PDADMAC be used with PAC?

A2 : Yes. PDADMAC acts as an effective coagulant aid.

Q3 : How do I choose the right active content?

A3 : We provide 20%, 40%, and 50% grades according to turbidity, COD, and oil content.

Q4 : Does PDADMAC affect sludge treatment?

A4 : No. PDADMAC forms dense flocs that aid sludge dewatering.