DOW DOWSIL 9902 is a siloxane-based petroleum defoamer with advanced thermo-mechanical attributes. The colorless-to-pale amber liquid (1,000-5,000 mPa·s) performs stably at pH 1-14 and ≤150°C, reducing foam by 45% at 0.1%-0.5% dosage. ISO 9001/REACH-certified, it boosts oil-gas separation efficiency by 20% in high-salinity extraction and lowers equipment corrosion risks.
Harsh Environment Resistance: Maintains stability in H2S-containing sour oil wells and 150°C thermal recovery systems.
Quick Foam Collapse: Nano-silicone particles break foam in 15 seconds (meets ASTM D892 standards).
Wide Compatibility: Avoids phase separation in brine and hydrocarbon mixed systems.
Eco-Friendly Traits: APEO/VOC-free, with a biodegradability rate of ≥90%.
Cost Savings: Cuts per-ton crude oil treatment cost by 18%.
Oil Drilling: Manages gas-cut foam in pH 8-12 drilling muds.
Refining Process: Eliminates coking foam in 450-500°C delayed cokers.
Gas-Liquid Separation: Reduces microfoam in three-phase separators.
Produced Water Handling: Defoams high-TDS wastewater (≥50,000 ppm).
Chemical Coordination: Improves lubrication and corrosion inhibition in pipelines.
ype | Siloxane-based defoamer |
Appearance | Colorless to pale amber liquid |
Active Content | Polydimethylsiloxane + hydrophobic silica (100%) |
Dynamic Viscosity | 1,000-5,000 mPa·s |
pH Range | 1-14 |
Flash Point | >150°C (closed cup) |
Surface Tension | 22.5 dyn/cm |
Density | 0.96-1.02 g/cm³ |
Thermal Stability | No stratification (150°C/24h) |
Recommended Dosage | 0.1%-0.5% (by total weight) |
Shelf Life | 24 months (sealed, 5-40°C) |
Packaging | 200kg/galvanized drum or bulk bags |
Contact With Us:
E-mail: wangxingqiang@ericwchem.com
Have a Questions? Call Us:
Add:
Building A1, Jiete Industrial Park, Huangpu District, Guangzhou City, Guangdong Province, China