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

Defros DMH Preservative

Defros DMH Preservative is a high-performance biocide from the Defros Preservative Series designed for water-based industrial systems. It effectively controls bacteria fungi and algae using dimethylol hydantoin (DMH) as its active ingredient. Ideal for paints coatings adhesives and metalworking fluids it ensures long-term microbial stability without compromising formulation integrity or regulatory compliance.
  • defros dmh preservative_d31a1960
  • defros dmh preservative_d31a1960

Features Of Defros DMH Preservative

  1. Highly effective broad-spectrum antimicrobial activity against bacteria, yeasts, and molds.

  2. pH-stable performance across a wide range of 4.0–9.5, ensuring compatibility in diverse formulations.

  3. Low volatility and excellent thermal stability, supporting processing at elevated temperatures.

  4. Non-oxidizing and non-corrosive to common industrial metals and packaging materials.

  5. Eco-preferred profile with low aquatic toxicity and ready biodegradability under OECD 301 guidelines.

Typical Applications Of Defros DMH Preservative

  1. Water-based paints and architectural coatings.

  2. Adhesives and sealants, including PVA and acrylic dispersions.

  3. Industrial metalworking fluids and aqueous coolants.

  4. Construction chemicals such as tile grouts, mortars, and cementitious slurries.

  5. Personal care emulsions where formaldehyde-donor alternatives are required.

Specifications Of Defros DMH Preservative

Chemical TypeDimethylol hydantoin (DMH) derivative
Product FormAqueous solution
AppearanceClear, colorless to pale yellow liquid
pH (1% aqueous solution)6.0 – 7.5
Active Content (as DMH)≥ 92.0 wt%
Density (20°C)1.28 – 1.32 g/cm³
SolubilityMiscible with water; compatible with most polar organic solvents
Shelf Life (unopened, 5–25°C)24 months


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