Here is an overview of KR-318B Poly(Dimethylamine-Co-Epichlorohydrin), a high-efficiency, broad-spectrum non-oxidizing biocide.
Product Summary
KR-318B is a cationic quaternary ammonium salt polymer, chemically known as Poly(2-hydroxypropyl dimethyl ammonium chloride) . It is a non-foaming, non-irritating biocide and algicide, effective against a wide range of microorganisms, including sulfate-reducing bacteria (SRB), and is also a good slime stripper and water clarifier . It is noted for being environmentally friendly and having a long duration of efficacy .
Key Specifications
Here are the typical technical specifications for KR-318B.
Parameter Standard Standard
Appearance Clear, colorless to pale yellow aqueous solution Clear, colorless to pale yellow aqueous solution
Solid Content, % 40.0 min 60.0 min
pH (as supplied) 6.5 – 8.5 6.5 – 8.5
Density (20℃), g/cm³ 1.05 – 1.15 1.15 – 1.25
Main Applications & Usage
KR-318B is versatile and finds use in several key areas:
Water Treatment: Used as a bactericidal algaecide and stripping agent for swimming pools, spas, landscape water, and industrial circulating water systems . It is particularly suitable for application in alkaline water .
Oil & Gas: Applied in oilfield water injection systems, where it effectively controls SRB and biofilm on equipment pipelines at typical operational temperatures (20°C to 65°C) .
Compatibility: It is compatible with non-ionic and cationic materials but cannot be used simultaneously with anions .
Dosing: It is generally applied by slug/impact dosing. A typical dosage concentration is 20-100 ppm, with application frequency recommended at once every 15 to 30 days depending on the system.
Safety & Handling
Safety: Avoid contact with eyes and skin. In case of contact, flush thoroughly with water.
Storage: Store in a shady, dry place at room temperature. Recommended shelf life is 10 to 12 months.
Packaging: Typically available in 25L drums, 200L drums, or IBCs.