Поли (диаллилдиметиламмоний хлорид)

Description

Poly(diallyldimethylammonium chloride), abbreviated polyDADMAC or PDADMAC, is a cationic polyelectrolyte, a homopolymer of diallyldimethylammonium chloride. Belongs to the class of water-soluble quaternary ammonium polymers. Basic CAS 26062-79-3; the substance is also registered under dozens of additional CAS numbers corresponding to different molecular weight fractions and trademarks.

Basic Attributes

• CAS No.: 26062-79-3 (basic; more than 40 CAS are known for individual polymer fractions and brands, including 9072-48-4, 37293-23-5, 58252-33-8, 63661-21-2)
• Chemical formula: (C8H16N,Cl)x
• Molecular weight: 491.06
• Exact weight: 161.097
• EU number: 230-993-8
• PSA: 0
• XLogP3 (calculated): -2.49

Physico-chemical characteristics

• Appearance: liquid
• Density: 1.20 g/cm3
• Boiling point: 100°C
• Flash point: 100 °C
• Refractive index: 1.375
• Solubility in water: miscible with water (calculated)
• Storage conditions: store with limited contact with air, storage temperature no higher than 30 °C, keep away from light
• Stability: stable; incompatible with strong oxidizing agents, iron and iron salts, steel, copper, copper alloys, aluminum

Product forms and synonyms

It is found on the market under the names Cat-Floc, Merquat 100, Percol 1697, Magnafloc 368, Alcofix 109, Floerger FL 45CLV, Reten 203, Quaternium 40, Polyquaternium 6 and dozens of other brands. The grades differ in molecular weight and solution viscosity, which determines the application - water clarification, sludge dewatering or fiber retention on the paper machine.

Scope of application

The cationic polymer is used as a coagulant and flocculant in the purification of drinking and waste water and dewatering of sludge; in pulp and paper production - as a retaining and strengthening additive for the wet part of the paper web; as an antistatic agent for textiles and paper; in oil production - to stabilize clayey rocks during hydraulic fracturing; in cosmetics under the number Polyquaternium-6 - as a conditioning component in shampoos and hair styling products. The positive charge of the polymer chain neutralizes negatively charged colloidal particles (clay, organic suspensions, microorganisms) and causes their aggregation into flakes, which are removed by subsequent settling or filtration.

Toxicity

• Oral LD50 in rats: 3 g/kg

Safety Information

• WGK Germany: 2
• Hazard class code: 36/37/38
• Safety instructions: 26-36
• RTECS number: BP6360000
• Precautions: P273, P501
• Hazard Statements: H412

Storage and transportation conditions

Store in a tightly closed container with limited air access, at a temperature not exceeding 30 °C, in a dark place. Avoid contact with strong oxidizing agents, iron and its salts, steel, copper, copper alloys and aluminum - destruction of the polymer and corrosion of the container is possible. It is not classified as dangerous goods during transportation, but when working with the concentrate, observe general skin and eye protection measures due to the chronic danger of H412 for aquatic organisms.