Name: Elementis Deqian DAPRO DF 661 Defoamer
Brand: Guangzhou Eric Wei Chemical Co., Ltd.

Features Of Elementis Deqian DAPRO DF 661 Defoamer

High-efficiency silicone-free defoaming action in both low- and high-shear systems.
Excellent compatibility with water-based formulations, minimizing risk of surface defects or haze.
Low addition dosage requirement—effective at 0.05–0.3% w/w in most applications.
Stable performance across a broad pH range (pH 4–12) and temperatures up to 90°C.
Non-VOC, APEO-free formulation compliant with major global regulatory expectations for industrial coatings and construction chemicals.

Typical Applications Of Elementis Deqian DAPRO DF 661 Defoamer

Architectural and industrial waterborne paints and coatings.
Cementitious tile adhesives and grouts.
Exterior insulation finishing systems (EIFS) and stucco formulations.
Water-based sealers and primers for concrete and masonry.
Construction additives including self-leveling underlayments and repair mortars.

Chemical Type	Polyether-modified nonionic surfactant blend
Product Form	Opaque liquid
Appearance	Off-white to light beige, homogeneous liquid
pH (1% aqueous solution)	6.5–8.5
Density (25°C)	1.02–1.06 g/cm³
Viscosity (25°C, Brookfield LVT, Spindle #3, 60 rpm)	150–350 mPa·s
Solubility / Dispersion	Readily dispersible in water; forms stable dilutions
Primary Applications	Water-based architectural coatings, cementitious construction materials

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