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

Defros M9 Preservative

Defros M9 Preservative is a high-performance antimicrobial agent from the Defros series by Clariant. Designed for water-based formulations, it effectively inhibits bacteria, yeast, and mold without formaldehyde release. Its broad-spectrum efficacy, low toxicity, and pH stability (4–10) make it ideal for paints, coatings, adhesives, and construction chemicals. Compliant with global regulations including EU Biocidal Products Regulation.
  • defros m9 preservative_62c682c7
  • defros m9 preservative_62c682c7

Features Of Defros M9 Preservative

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

  2. Excellent thermal and pH stability across pH 3.0–9.0.

  3. Low volatility and non-volatile residue profile, ensuring long-term efficacy in formulations.

  4. Compatible with anionic, nonionic, and amphoteric surfactants commonly used in industrial systems.

  5. REACH-compliant and free of formaldehyde, MIT, and parabens.

Typical Applications Of Defros M9 Preservative

  1. Water-based paints and architectural coatings.

  2. Industrial metalworking fluids and cutting oils.

  3. Adhesives, sealants, and construction mortars.

  4. Textile auxiliaries and dye baths.

  5. Printing inks and pigment dispersions.

Specifications Of Defros M9 Preservative

Chemical TypeBlend of isothiazolinones and synergistic biostatic agents
Product FormLiquid concentrate
AppearanceClear, pale yellow to amber liquid
pH (1% aqueous solution)3.5–4.5
Density (20°C)1.08–1.12 g/cm³
SolubilityCompletely miscible with water and common polar organic solvents
Storage Stability≥24 months at 5–25°C in original sealed container
Primary ApplicationsPreservation of water-containing industrial formulations


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