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

Defros BK-H Preservative

Defros BK-H Preservative is a high-efficiency, low-toxicity biocide from the Defros BK Series, specifically formulated for industrial water systems. It effectively controls bacteria, fungi, and algae with excellent thermal and pH stability. Compatible with common water treatment chemicals, it ensures long-term preservation without compromising system performance or material integrity.
  • defros bk h preservative_3639e3a2
  • defros bk h preservative_3639e3a2

Features Of Defros BK-H Preservative

  1. Broad-spectrum antimicrobial activity against bacteria, yeasts, and molds.

  2. Excellent compatibility with anionic, nonionic, and amphoteric surfactants.

  3. pH-stable performance across 4.0–9.5, ensuring efficacy in diverse formulation environments.

  4. Low volatility and minimal odor, supporting safer handling and improved user acceptance.

  5. Non-oxidizing chemistry, eliminating risk of corrosion or degradation to sensitive formulation components.

Typical Applications Of Defros BK-H Preservative

  1. Water-based architectural coatings and decorative paints.

  2. Industrial maintenance coatings and protective primers.

  3. Adhesives, sealants, and construction mastics.

  4. Printing inks, especially aqueous flexographic and gravure formulations.

  5. Textile auxiliaries and dye house process liquors.

Specifications Of Defros BK-H Preservative

Chemical TypeBenzisothiazolinone (BIT)-based biocide blend
Product FormAqueous solution
AppearanceClear, pale yellow liquid
Active Content1.5% w/w BIT equivalent
pH (1% aqueous solution)6.0–7.5
Density (20°C)1.01–1.03 g/cm³
SolubilityCompletely miscible with water
Storage Stability≥24 months in unopened original container at 5–30°C


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