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

DOW DOWSIL FS-2638 Defoamer

DOW DOWSIL FS-2638 is a 100% active silicone antifoam fluid engineered for extreme industrial environments. It presents as a transparent liquid (viscosity 1,000-60,000 cSt) and maintains stable performance under -20°C to 150°C conditions, achieving rapid foam collapse (with 24+ hours of suppression) in non-aqueous or emulsified systems. Certified by ISO 9001, REACH, and FDA 21 CFR 175.300, its optimized dispersion efficiency reduces mineral oil defoamer consumption by 50% in oil desulfurization and high-temperature cleaning processes.

Product Information of DOW DOWSIL FS-2638  Defoamer

  1. Excellent Thermal Resistance: Operates reliably in extreme temperature ranges from -20°C to 150°C, adapting to high-heat industrial workflows.

  2. Self-Emulsifying Property: Compatible with aliphatic and aromatic solvents, enabling seamless integration into diverse non-aqueous systems.

  3. Low Surface Tension: 21.5 mN/m (in 0.1% solution) accelerates foam collapse, enhancing defoaming speed and efficiency.

  4. Eco & Safety Compliance: APEO-free and FDA-compliant, meeting strict environmental and food-contact safety standards.

Areas of Application of DOW DOWSIL FS-2638  Defoamer

  1. Oil & Gas Processing: Controls foam in Fluid Catalytic Cracking (FCC) units (10-100 ppm dosage), ensuring smooth refining operations.

  2. Industrial Cleaning: Suppresses foam in high-alkaline degreasers (pH 12-14), improving the penetration of cleaning agents and degreasing efficiency.

  3. Chemical Reactors: Eliminates microbubbles in polymerization reactions, preventing defects in final polymer products.

  4. Lubricant Production: Reduces air voids in high-viscosity oils, enhancing lubricant performance and service life.

Specifications Of DOW DOWSIL FS-2638  Defoamer

Type
Silicone antifoam fluid
Appearance
Transparent to pale-yellow liquid
Active Content
Polydimethylsiloxane (100% active)
Dynamic Viscosity
1,000-60,000 cSt
Density
0.97 g/cm³
Solubility
Aliphatic/aromatic/chlorinated solvents
Surface Tension
21.5 mN/m
Flash Point
>200°C (closed cup)
Shelf Life
24 months (sealed)
Recommended Diluent
Solvent oil (1:9 dilution)
Packaging
180kg/steel drum or custom


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