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

Solvay Rhodoline DF 642M Defoamer

Solvay Rhodoline DF 642M is a high-performance silicone-based defoamer designed for demanding industrial applications including water-based coatings, adhesives, and construction materials. It delivers rapid foam suppression, excellent compatibility, and long-term stability without affecting substrate appearance or performance.
  • solvay rhodoline df 642m defoamer_e8f22d45
  • solvay rhodoline df 642m defoamer_e8f22d45

Features Of Solvay Rhodoline DF 642M Defoamer

  1. Highly effective silicone-based defoamer with rapid knock-down and lasting foam suppression.

  2. Excellent compatibility and dispersion stability in water-based systems without causing haze or surface defects.

  3. Low addition dosage requirement—typically effective at 0.05–0.3 wt% in formulated products.

  4. Thermally stable up to 120 °C, supporting high-temperature processing conditions.

  5. Non-ionic character ensures broad formulation tolerance across pH ranges (pH 4–12).

Typical Applications Of Solvay Rhodoline DF 642M Defoamer

  1. Architectural coatings including interior and exterior paints and primers.

  2. Industrial maintenance coatings and coil coatings.

  3. Water-based adhesives and construction sealants.

  4. Textile printing pastes and pigment dispersions.

  5. Agrochemical formulations such as suspension concentrates (SC) and emulsifiable concentrates (EC).

Specifications Of Solvay Rhodoline DF 642M Defoamer

Chemical TypeSilicone-polyether copolymer emulsion
Product FormOpaque white liquid
AppearanceHomogeneous milky dispersion
Active Content25 ± 1 wt%
pH (1% aqueous solution)6.0–7.5
Viscosity (25 °C, mPa·s)150–400
Freeze-Thaw StabilityStable after 3 cycles (−10 °C for 16 h / 25 °C for 8 h)
Primary ApplicationsWater-based coatings, adhesives, agrochemicals, and industrial cleaning formulations


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