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

DOW DOWSIL AFE-7620 Defoamer

DOW DOWSIL AFE-7620 is a silicone-based defoamer with advanced thermo-mechanical properties to boost your competitiveness. It is a milky homogeneous liquid (150 mPa·s viscosity) that performs stably at pH 1-14 and ≤150°C, enabling rapid bubble suppression in kraft pulping and industrial cleaning systems. Certified by ISO 9001 and REACH, it cuts foam generation by 40% at 25-50 ppm dosage while improving process efficiency.

Product Information of DOW DOWSIL AFE-7620 Defoamer

  1. Wide Process Tolerance: Works with pH 1-14 systems and maintains performance in 150°C environments.

  2. Fast Defoaming Action: Nano-silicone particles (D50≤5 μm) collapse bubbles within 20 seconds.

  3. Strong Dynamic Stability: Optimized molecular topology ensures functionality under high shear (5,000-10,000 rpm).

  4. Eco-Friendly Compliance: Free of APEO and VOC, meeting GB 18582-2020 and OECD 301B standards.

  5. Cost-Saving Performance: Delivers 15%-20% cost reduction per ton of treatment at 0.01%-0.1% dosage.

Areas of Application of DOW DOWSIL AFE-7620 Defoamer

  1. Pulp Cooking: Controls fiber loss in 160-170°C kraft cooking processes.

  2. Industrial Cleaners: Compatible with pH 12 alkaline degreasers and ultrasonic systems.

  3. Wastewater Treatment: Reduces sludge volume in high-COD effluent (≥20,000 mg/L).

  4. Textile Dyeing: Eliminates microbubbles in jet dyeing equipment with ≥5 bar pressure.

  5. Metalworking Fluids: Extends tool life by suppressing foam in cutting fluids.

Specifications Of DOW DOWSIL AFE-7620 Defoamer

Type
Silicone emulsion defoamer
Appearance
Milky homogeneous liquid
Active Content
Polydimethylsiloxane + hydrophobic silica (20%)
Dynamic Viscosity
150 mPa·s
pH Range
1-14
Flash Point
>100°C (closed cup)
Surface Tension
32.93 dyn/cm
Thermal Stability
No stratification (150°C/24h)
Recommended Dosage
0.01%-0.1% (by total weight)
Shelf Life
1080 days (sealed, 5-35°C)
Packaging
200kg/drum or custom bulk bags


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