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

DOWSIL AFE-7500 Defoamer

DOW DOWSIL AFE-7500 is a high-solids silicone defoamer with advanced thermal-mechanical properties to boost your competitiveness. It is a white viscous paste (200,000 mPa·s viscosity) that performs stably at pH 14 and ≤95°C, achieving 40% foam reduction at 0.1%-0.5% dosage. Certified by FDA 21 CFR 176.170 and BfR, it improves fiber recovery by 18% in kraft and sulfite pulping processes while optimizing energy efficiency.

Product Information of DOWSIL AFE-7500 Defoamer

  1. Strong Process Compatibility: Works with pH 14 black liquor and 160-170°C cooking stages.

  2. Convenient Smart Dilution: Creates stable low-solids emulsions (20% active) using tap or soft water.

  3. Eco & Safety Compliance: Meets FDA food contact standards and BfR safety guidelines.

  4. Cost-Saving Performance: Lowers treatment cost per ton of pulp by 20% through optimized usage.

  5. Long-Term Storage Stability: Offers 12-month shelf life in sealed containers (stored at 5-35°C).

Areas of Application of DOWSIL AFE-7500 Defoamer

  1. Pulp Digestion: Controls fiber loss in pH 12-14 kraft cooking processes.

  2. Paper Machine: Enhances sheet uniformity in 1,800 m/min forming sections.

  3. Effluent Treatment: Reduces sludge volume in high-COD wastewater (≥30,000 mg/L).

  4. Industrial Synergy: Boosts the persistence of mineral oil-based defoamers.

Specifications Of DOWSIL AFE-7500 Defoamer

Type
Silicone concentrated defoamer
Appearance
White viscous paste
Active Content
Polydimethylsiloxane + hydrophobic silica (54-58%)
Solid Content
62-66%
Dynamic Viscosity
200,000 mPa·s
pH Range
1-14
Surface Tension
21.5 dyn/cm
Flash Point
>100°C (closed cup)
Recommended Dosage
0.1%-0.5% (by total weight)
Shelf Life
12 months (sealed, 5-35°C)
Packaging
200kg/drum or custom bulk bags


Get in Touch with ERICW
Let competitive chemical materials go global.

Your Name *

Your Email *

Your Phone

Country

Your Message *