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

Features Of Dow STS Defoamer

Highly effective silicone-based defoaming agent with rapid knock-down and lasting foam suppression.
Excellent compatibility across a wide pH range (pH 4–12) and in both anionic and nonionic surfactant systems.
Low dosage efficiency—typically effective at 0.01–0.1% w/w in demanding industrial formulations.
Thermally stable up to 120°C, maintaining performance under elevated process temperatures.
Non-volatile and non-silicone-oil bleed formulation, minimizing residue and surface defects in end products.

Typical Applications Of Dow STS Defoamer

Water-based architectural coatings and industrial paints.
Industrial and institutional (I&I) cleaning formulations, including alkaline detergents.
Paper and board coating slurries during wet-end and coating operations.
Agrochemical adjuvant systems for herbicidal and fungicidal spray solutions.
Textile dyeing and finishing auxiliaries where foam interferes with uniform processing.

Chemical Type	Silicone emulsion (polydimethylsiloxane-based)
Product Form	White to off-white liquid emulsion
Appearance	Opaque, milky, homogeneous liquid
pH (1% aqueous dilution)	6.5–8.0
Specific Gravity (25°C)	0.98–1.02 g/cm³
Viscosity (Brookfield LVT, Spindle #3, 20 rpm, 25°C)	50–150 cP
Primary Applications	Coatings, cleaning agents, papermaking, agrochemicals, textiles
Key Features	Rapid foam collapse, long-term antifoam stability, broad compatibility

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