PolyDADMAC

PolyDADMAC (Polydiallyldimethylammonium chloride)

CAS Number: 26062-79-3

1. Characteristics

PolyDADMAC is a cationic linear polymer and an important organic flocculant/polyelectrolyte.

High Cationic Charge Density: Its molecular chain carries a high density of positive charges, enabling efficient neutralization of negatively charged colloidal particles.

Strong Flocculation Ability: It aggregates suspended particles into large flocs via charge neutralization and adsorption bridging, facilitating separation.

Good Water Solubility: Easily dissolves in water to form clear solutions.

Broad pH Applicability: Effective over a wide pH range.

Safe for Use: Relatively non-toxic and safe at recommended dosages, with monomer residues strictly controlled.

2. Main Applications

Water Treatment: Its primary application. Used as a primary coagulant or coagulant aid in potable water purification, municipal/industrial wastewater treatment to remove turbidity, color, and organic matter.

Paper Industry: Serves as a wet-end additive, retention/drainage aid, and charge neutralizer to improve filler/fine retention and paper quality.

Textile & Dyeing: Acts as a fixing agent to enhance dye fastness and is used in wastewater treatment.

Oilfield Chemicals: Used as a clay stabilizer and flocculant.

Personal Care: Used in small amounts as a conditioning agent in products like shampoos.

3. Transportation & Packaging

Form: Typically supplied as an aqueous solution (common concentrations: 20%, 40%) in plastic drums (e.g., 25kg, 200kg, 1000kg) or tanker trucks. Powder/granular forms are also available.

Classification: Generally transported as non-hazardous goods, but compliance with local regulations and specific product MSDS is essential. Avoid severe impact and container damage during transit.

Labeling: Containers must be clearly labeled with product name, concentration, batch number, production date, and safety information.

4. Storage

Conditions: Store in a cool, dry, well-ventilated place. Avoid direct sunlight and outdoor storage.

Temperature: Prevent freezing of liquid products (recommended range: 5-40°C) to maintain efficacy. If frozen, thaw and mix thoroughly before use.

Handling: Keep containers tightly sealed and stack securely to prevent leakage.

Shelf Life: Typically 6 months to 1 year (refer to product specifications). Testing activity after long-term storage is advised.