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// Foam Control Agent //

Silicon Based Defoamer

Polysiloxane Emulsion Antifoam & Defoamers (DS-50N & DS-60 Series)

Silicone Emulsion

DS-50N & DS-60 Series Silicon Defoamer

High-efficiency silicone-based defoamers formulated from high-grade polysiloxane, dispersants, and stabilizers for ultra-fast foam elimination and alkali resistance.

Designed for continuous foam control in severe industrial environments. These grades exhibit exceptional stability under high alkalinity conditions (pulp black liquor) and high compatibility in textile, water treatment, agrochemical, and oilfield drilling applications.

Product Lines DS-50N Series (Alkali Resistant) & DS-60 Series
Chemical Base Polysiloxane Emulsion
Recommended Dosage 10 – 100 ppm (Determined by site trial)
Packaging Options 25 kg, 50 kg, 120 kg, 200 kg plastic drums

Key Performance Features

Fast Foam Knockdown

Immediate rupture of surface foam bubbles upon contact, maintaining process capacity in high-turbulence vessels[cite: 9, 11].

High Alkali Resistance

DS-50N Series is specially fortified to maintain persistent foam suppression in highly alkaline media such as pulp black liquor washing.

Oilfield Mud Recovery

DS-60 Series effectively de-aerates oilfield drilling muds, achieving mud recovery rates close to 100%.

Technical Data Sheet (TDS) – Grade Portfolio

Series Grade Active Solid Content (%) Appearance pH Value Viscosity (25°C) Special Characteristic
DS-1050N 10 ± 1% White / Pale-yellow liquid 6.0 – 8.0 100 – 3000 mPa·s High Alkali Resistance
DS-2050N 20 ± 1% White / Pale-yellow liquid 6.0 – 8.0 100 – 3000 mPa·s High Alkali Resistance
DS-3050N 30 ± 2% White / Pale-yellow liquid 6.0 – 8.0 100 – 3000 mPa·s High Alkali Resistance
DS-1060 10 ± 1% White / Pale-yellow liquid 6.0 – 8.0 100 – 2000 mPa·s Rapid Knockdown / Compatibility
DS-2060 20 ± 2% White / Pale-yellow liquid 6.0 – 8.0 100 – 2000 mPa·s Rapid Knockdown / Compatibility
DS-3060 30 ± 2% White / Pale-yellow liquid 6.0 – 8.0 100 – 2000 mPa·s Rapid Knockdown / Compatibility
DS-4060 40 ± 2% White / Pale-yellow liquid 6.0 – 8.0 100 – 2000 mPa·s Rapid Knockdown / Compatibility

Target Industrial Applications

Pulp Black Liquor

Pulp washing black liquor in papermaking requiring persistent suppression in alkaline media.

Oilfield Drilling

De-aeration of oilfield drilling muds with high recovery performance.

Textile & Agrochemicals

Textile sizing, medium-temperature dyeing, pesticide formulations, and industrial cleaning.

Wastewater Treatment

Industrial effluent clarification, aeration basin foam control, and chemical process water[cite: 9, 10, 11].

Directions for Use & Dilution Rules

Dosing & Addition

Can be added directly after foam forms or blended into products as a preventive anti-foam component. Typical dosage is 10 to 100 ppm.

Critical Dilution Rule

Do not dilute directly with raw water, as this can cause phase separation and demulsification. If dilution is necessary, dilute using 2.5%–3% polyacrylate thickened water following technical guidance.

Storage & Package Guidance

Storage Guidelines
  • Store at 0–30°C (DS-50N) or 5–30°C (DS-60) away from heat and direct sunlight.
  • Do not add acids, alkalis, or salts directly into the product container.
  • Keep containers sealed to prevent bacterial contamination.
  • If frozen below 0°C or phase separation occurs after long storage, thaw and stir thoroughly before use.

Shelf Life: 6 months from manufacture date in unopened packaging.

// TECHNICAL SUPPORT & TRIAL //

Need a trial evaluation for your high-alkali or high-foam process?

Our technical team provides site trials, active content selection, and precise ppm dosage determination.

Request Defoamer Trial