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

Dow ROCIMA 640 Biocide

Dow ROCIMA 640 Biocide is a broad-spectrum, formaldehyde-releasing preservative from Dow’s ROCIMA™ antimicrobial series. Designed for water-based industrial formulations, it effectively controls bacteria, yeast, and mold in paints, coatings, adhesives, and metalworking fluids. Its stable performance across pH 4–10 and low-odor profile make it ideal for high-performance, low-VOC applications requiring long-term preservation.
  • dow rocima 640 biocide_41881b76
  • dow rocima 640 biocide_41881b76

Features Of Dow ROCIMA 640 Biocide

  1. Broad-spectrum efficacy against bacteria, fungi, and algae in water-based systems.

  2. Low-foaming formulation suitable for high-shear industrial processes.

  3. Stable across a wide pH range (pH 4–10) and compatible with common water treatment additives.

  4. Non-oxidizing chemistry that avoids corrosion risks associated with chlorine or bromine-based biocides.

  5. EPA-registered for use in industrial water systems under U.S. regulatory frameworks.

Typical Applications Of Dow ROCIMA 640 Biocide

  1. Cooling water systems in HVAC and power generation facilities.

  2. Process water circuits in paper and pulp manufacturing.

  3. Recirculating water systems in metalworking fluid applications.

  4. Make-up water treatment in closed-loop industrial cooling towers.

  5. Preservation of water-based emulsions and coatings during storage and transport.

Specifications Of Dow ROCIMA 640 Biocide

Chemical TypeIsothiazolinone-based biocide blend
Product FormLiquid concentrate
AppearanceClear, pale yellow to amber liquid
pH (as supplied)3.5–5.5
Density (20 °C)1.08–1.12 g/cm³
SolubilityMiscible with water in all proportions
Primary ApplicationsIndustrial water treatment, metalworking fluids, paper mill systems
Key FeaturesNon-oxidizing, low-foaming, broad-spectrum microbial control


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