Guangzhou Eric Wei Chemical Co., Ltd.
Guangzhou Eric Wei Chemical Co., Ltd.

Dow DOWICIL QK-20 Biocide

Dow DOWICIL QK-20 Biocide is a broad-spectrum, formaldehyde-releasing antimicrobial agent from Dow’s DOWICIL™ portfolio. Designed for industrial water systems, it effectively controls bacteria, fungi, and algae. Its stable chemistry ensures long-term preservation with low odor and minimal corrosion risk. Widely used in cooling towers, process water, and metalworking fluids across global manufacturing sectors.
  • dow dowicil qk 20 biocide_232b7a14
  • dow dowicil qk 20 biocide_232b7a14

Features Of Dow DOWICIL QK-20 Biocide

  1. Broad-spectrum antimicrobial activity against bacteria, fungi, and algae.

  2. Excellent stability in water-based formulations across a wide pH range (pH 4–10).

  3. Low volatility and minimal odor, supporting safer handling and improved worker comfort.

  4. Compatible with common surfactants, thickeners, and other formulation ingredients.

  5. Effective at low use concentrations, offering cost-efficient microbial control.

Typical Applications Of Dow DOWICIL QK-20 Biocide

  1. Preservation of architectural coatings and decorative paints.

  2. Microbial control in industrial cleaning compounds and detergents.

  3. Stabilization of water-based adhesives and sealants.

  4. Protection of construction chemicals including grouts, mortars, and cementitious slurries.

  5. Preservation of metalworking fluid concentrates and ready-to-use emulsions.

Specifications Of Dow DOWICIL QK-20 Biocide

Chemical TypeIsothiazolinone-based blend (primarily 5-chloro-2-methyl-4-isothiazolin-3-one and 2-methyl-4-isothiazolin-3-one)
Product FormAqueous solution
AppearanceClear, pale yellow liquid
pH (1% aqueous solution)2.0 – 4.0
Density (25°C)1.02 – 1.06 g/cm³
Active Content2.0 – 2.4% w/w total isothiazolinones
SolubilityCompletely miscible with water
Primary ApplicationsPreservative for water-based industrial and consumer products


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