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.
Strong Process Compatibility: Works with pH 14 black liquor and 160-170°C cooking stages.
Convenient Smart Dilution: Creates stable low-solids emulsions (20% active) using tap or soft water.
Eco & Safety Compliance: Meets FDA food contact standards and BfR safety guidelines.
Cost-Saving Performance: Lowers treatment cost per ton of pulp by 20% through optimized usage.
Long-Term Storage Stability: Offers 12-month shelf life in sealed containers (stored at 5-35°C).
Pulp Digestion: Controls fiber loss in pH 12-14 kraft cooking processes.
Paper Machine: Enhances sheet uniformity in 1,800 m/min forming sections.
Effluent Treatment: Reduces sludge volume in high-COD wastewater (≥30,000 mg/L).
Industrial Synergy: Boosts the persistence of mineral oil-based defoamers.
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 |
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E-mail: wangxingqiang@ericwchem.com
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Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China