Name: Dow DOWSIL 8603 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Dow DOWSIL 8603 Defoamer

Highly effective silicone-based defoamer for rapid foam knock-down and long-term foam suppression.
Excellent compatibility with water-based systems, including acrylic, styrene-acrylic, and vinyl acetate emulsions.
Low dosage requirement—effective at 0.05–0.3 wt% in most formulations—minimizing impact on final product properties.
Thermally stable up to 120 °C, supporting high-temperature processing conditions without degradation.
Non-yellowing and non-silicone-residue-forming, preserving clarity and surface aesthetics in sensitive coatings and adhesives.

Typical Applications Of Dow DOWSIL 8603 Defoamer

Architectural and industrial waterborne paints and coatings.
Adhesives and sealants, especially pressure-sensitive and construction-grade formulations.
Textile and leather finishing auxiliaries, including dye baths and softeners.
Water-based inks and overprint varnishes.
Construction chemicals such as cementitious tile adhesives and grouts.

Chemical Type	Silicone oil-in-water emulsion
Product Form	White to off-white opaque liquid
Appearance	Uniform, slightly viscous emulsion
pH (1% aqueous dispersion)	6.0–7.5
Density (25 °C)	Approx. 1.01–1.03 g/cm³
Viscosity (Brookfield RV, 25 °C, spindle #3, 20 rpm)	500–1,500 cP
Primary Applications	Waterborne coatings, adhesives, textile auxiliaries, construction chemicals
Key Features	Rapid defoaming, persistent antifoam performance, low-foam re-entrainment

Get in Touch with ERICW

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Contact With Us:

E-mail: wangxingqiang@ericwchem.com
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15921782326
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China