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

Defros BT Preservative

Defros BT Preservative is a high-performance biocide from the Defros Preservative Series designed for industrial water systems. It effectively controls bacteria fungi and algae with low-toxicity non-oxidizing chemistry. Ideal for cooling towers process water and oilfield applications. Offers long-lasting stability broad-spectrum efficacy and compatibility with common water treatment additives. EPA-registered and REACH-compliant.
  • defros bt preservative_e1bb65e2
  • defros bt preservative_e1bb65e2

Features Of Defros BT Preservative

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

  2. Excellent stability across a wide pH range (pH 4–10) and in the presence of common surfactants and chelating agents.

  3. Low volatility and non-volatile residue—ideal for water-based formulations requiring long-term preservation.

  4. Compatible with anionic, nonionic, and amphoteric surfactants without compromising efficacy or formulation clarity.

  5. REACH-compliant and registered under EU Biocidal Products Regulation (BPR) for industrial preservative use.

Typical Applications Of Defros BT Preservative

  1. Preservation of water-based metalworking fluids and cutting oils.

  2. Stabilization of industrial cleaning concentrates and detergent formulations.

  3. Protection of latex paints, architectural coatings, and emulsion-based adhesives.

  4. Microbial control in pigment dispersions and aqueous pigment pastes.

  5. Preservation of process water systems in papermaking and textile finishing operations.

Specifications Of Defros BT Preservative

Chemical TypeBenzisothiazolinone (BIT)-based biocide blend
Product FormAqueous solution
AppearanceClear, pale yellow liquid
pH (1% aqueous solution)6.5 – 8.5
Density (20°C)1.02 – 1.06 g/cm³
SolubilityCompletely miscible with water and polar organic solvents
Storage Stability≥24 months at 5–25°C in original sealed container
Primary ApplicationsIndustrial water-based formulations requiring broad-spectrum, long-lasting preservation


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