What is PolyDADMAC CAS 26062-79-3?

PolyDADMAC is poly(diallyldimethylammonium chloride), a water-soluble strong cationic polymer. Its quaternary ammonium groups give it a high positive charge that remains effective over a wide pH range.

How should I choose a PolyDADMAC grade for water clarification?

Selection should be based on raw-water or wastewater quality, target turbidity or colour, active-solids preference, viscosity limit and dosing equipment. A jar test is the most reliable way to set the dose for a specific treatment line.

Can PolyDADMAC be used with inorganic coagulants or anionic polymers?

Yes. It can act as a primary coagulant or coagulant aid and is often combined with inorganic coagulants such as PAC or ferric-based products. It is also commonly paired with an anionic polyacrylamide in a dual-polymer clarification programme.

Why is the charge of PolyDADMAC described as pH-independent?

The active groups are permanently charged quaternary ammonium centres rather than pH-sensitive amines. This allows PolyDADMAC to remain cationic across a broad pH range, though the selected grade still needs to match the process chemistry.

What happens if PolyDADMAC is overdosed?

Overdosing can reverse the charge on suspended particles and restabilize the system, reducing clarification performance. Treatment programmes therefore use jar testing and site trials to identify the lowest effective dose.

PolyDADMAC (PDADMAC) CAS 26062-79-3

PolyDADMAC, commonly abbreviated PDADMAC, CAS 26062-79-3, is a cationic water-treatment polymer supplied as an aqueous grade for clarification, filter-aid and sludge-conditioning programmes. Confirm the required grade, then request a quotation with COA/TDS/SDS for bulk supply.

CAS: 26062-79-3
Synonyms: Poly(diallyldimethylammonium chloride); PDADMAC; PolyDADMAC; Diallyldimethylammonium chloride polymer
Einecs: Not specified (polymeric product)
Molecular Formula: (C8H16ClN)n
Grade: Industrial water-treatment grade; solids and viscosity selected for the treatment line
Package: HDPE drums or IBCs for liquid grades; final pack depends on solids concentration and shipment requirements

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Product Description

PolyDADMAC (PDADMAC) CAS 26062-79-3 is poly(diallyldimethylammonium chloride), with molecular formula (C8H16ClN)n.

Synonyms: PDADMAC; PolyDADMAC; poly(diallyldimethylammonium chloride); polyquaternium-6; DADMAC polymer.

CAS: 26062-79-3.

Molecular formula: (C8H16ClN)n.

It is a water-soluble strong cationic polymer supplied as a clear to pale-yellow liquid grade.

Quaternary ammonium groups provide a high positive charge over a wide pH range.

It is used to destabilise negatively charged colloids, organic matter and fine solids before separation.

It serves as a primary coagulant or coagulant aid in raw-water and wastewater clarification.

It is used in sludge conditioning before dewatering, with charge demand and feed solids determining the working grade.

It is commonly paired with inorganic coagulants such as PAC or ferric-based products, or with anionic polyacrylamide in dual-polymer programmes.

Liquid grades are specified by active solids and viscosity rather than by CAS number alone.

Overdosing can reverse the charge on suspended particles and restabilise the system.

For quotation, specify target application, feed-water analysis or sludge type, active-solids range, viscosity band and pH window.

Store in closed containers and follow the applicable SDS and treatment programme for handling.

Use suitable PPE when handling to avoid skin or eye contact and chemical exposure.

Confirm batch identity, active content, viscosity method and appearance on the COA.

Confirm grade, packaging, and specification as required.

The page is an RFQ entry point and does not state stock, price, MOQ, or fixed lead time.

For an RFQ, state the intended application, required grade, quantity, packaging, destination, and document needs.

FAQ - Technical & Supply Chain

Q:
What is PolyDADMAC CAS 26062-79-3?

A: PolyDADMAC is poly(diallyldimethylammonium chloride), a water-soluble strong cationic polymer. Its quaternary ammonium groups give it a high positive charge that remains effective over a wide pH range.
Q:
How should I choose a PolyDADMAC grade for water clarification?

A: Selection should be based on raw-water or wastewater quality, target turbidity or colour, active-solids preference, viscosity limit and dosing equipment. A jar test is the most reliable way to set the dose for a specific treatment line.
Q:
Can PolyDADMAC be used with inorganic coagulants or anionic polymers?

A: Yes. It can act as a primary coagulant or coagulant aid and is often combined with inorganic coagulants such as PAC or ferric-based products. It is also commonly paired with an anionic polyacrylamide in a dual-polymer clarification programme.
Q:
Why is the charge of PolyDADMAC described as pH-independent?

A: The active groups are permanently charged quaternary ammonium centres rather than pH-sensitive amines. This allows PolyDADMAC to remain cationic across a broad pH range, though the selected grade still needs to match the process chemistry.
Q:
What happens if PolyDADMAC is overdosed?

A: Overdosing can reverse the charge on suspended particles and restabilize the system, reducing clarification performance. Treatment programmes therefore use jar testing and site trials to identify the lowest effective dose.

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