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

Dow DOWICIL QK-20 Fungicide

Dow DOWICIL QK-20 Fungicide is a broad-spectrum biocide from Dow’s DOWICIL series, formulated with isothiazolinone chemistry for effective microbial control in industrial water systems, paints, and coatings. It prevents fungal and bacterial growth, ensures product stability, and complies with global regulatory standards. Ideal for preservation in latex paints and emulsions, it delivers reliable performance with low usage rates and excellent compatibility.
  • dow dowicil qk 20 fungicide_87728802
  • dow dowicil qk 20 fungicide_87728802

Features Of Dow DOWICIL QK-20 Fungicide

  1. Broad-spectrum fungicidal activity against key spoilage microorganisms including bacteria, yeasts, and molds.

  2. Stable across a wide pH range (pH 4–10), ensuring compatibility with diverse industrial formulations.

  3. Low volatility and minimal odor, supporting safe handling in enclosed manufacturing environments.

  4. Effective at low use concentrations, delivering cost-efficient preservation without compromising product integrity.

  5. Non-oxidizing chemistry, avoiding degradation of sensitive active ingredients or polymers in end-use systems.

Typical Applications Of Dow DOWICIL QK-20 Fungicide

  1. Preservation of water-based paints and coatings.

  2. Microbial control in adhesives and sealants.

  3. Protection of construction chemicals including cementitious mortars and grouts.

  4. Stabilization of architectural and industrial cleaning formulations.

  5. Preservation of nonwoven fabric slurries and paper coating applications.

Specifications Of Dow DOWICIL QK-20 Fungicide

Chemical TypeIsothiazolinone-based biocide (mixture of 1,2-benzisothiazolin-3-one and 5-chloro-2-methyl-4-isothiazolin-3-one)
Product FormAqueous solution
AppearanceClear to slightly hazy, pale yellow liquid
pH (1% aqueous solution)2.5 – 4.5
Density (at 20°C)1.08 – 1.12 g/cm³
SolubilityCompletely miscible with water and common polar organic solvents
Primary ApplicationsIndustrial preservation for water-based formulations
Key FeaturesFast-acting, non-leaching, broad-spectrum antimicrobial efficacy


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