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

Dowsil ACP-3990 Defoamer

DOWSIL ACP-3990 is a 100% silicone defoamer leveraging hydrophobic particle activation, tailored for chemical pulping foam control. It is a gray-to-milky viscous liquid (35,000 mPa·s) that works at pH 2-12 and high temps (flash point >100°C), boosting pulp washing efficiency and lowering fiber loss. It uses 30%-50% less than mineral oil defoamers and meets FDA 21 CFR 176.210 for food-grade pulp.

Product Information of Dowsil  ACP-3990 Defoamer

  1. Super Cost-Effective Use: Delivers similar results with 1/20-1/40 the amount of traditional mineral oil defoamers, slashing costs by 40%.

  2. Tough Environment Resistance: Withstands high temp (>100°C) and shear, suitable for 80-100°C kraft pulping.

  3. Quick Emulsification: Pre-emulsified liquid allows direct dosing, creating stable emulsion in 5 minutes.

  4. Eco-Friendly Compliance: Free of APEO, VOC<50g/L, and certified by EU REACH and China GB 24408.

  5. Extended Shelf Life: Maintains stability for 720 days without stratification at 4-50°C.

Areas of Application of Dowsil  ACP-3990 Defoamer

  1. Chemical Pulping: Curbs black liquor foam, reducing fiber loss (0.05%-0.2% dosage).

  2. Paper Bleaching: Manages foam in H₂O₂ bleaching to ensure uniform whiteness.

  3. Food Processing Wastewater: Controls foam in fermenters/wash lines, complying with indirect food contact standards.

  4. Industrial Wastewater: Lessens foam in high-COD aeration tanks, decreasing sludge carryover.

Specifications Of Dowsil  ACP-3990 Defoamer

Type
Silicone defoamer
Appearance
Gray to milky viscous liquid
Active Content
100% silicone
Dynamic Viscosity
35,000 mPa·s
Flash Point (closed cup)
>100°C
Specific Gravity
1.02
pH Range
2-12
Recommended Dosage
0.05%-0.3% (on total system)
Packaging
25kg/drum or 200kg/IBC


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