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

DOW SYL-OFF EM 7989 Defoamer

DOW SYL-OFF EM 7989 is a self-emulsifying silicone defoamer tailored for bath products and personal care formulas. It contains active silicone components (polydimethylsiloxane + hydrophobic silica), presenting as a transparent to slightly opalescent liquid (200-500 mPa·s viscosity) that performs stably at pH 3-10 and ≤80°C. It enables quick foam collapse (24+ hours suppression) in high-shear emulsification, meets FDA 21 CFR 175.300 and REACH, and cuts bath product turbidity by 40% at 0.02%-0.5% dosage vs. mineral oil-based defoamers.

Product Information of DOW SYL-OFF EM 7989 Defoamer

  1. Process Adaptability: Works in pH 3-10 systems with SLES/AES surfactants.

  2. Self-Dispersing Ability: Achieves nano-scale dispersion (D50≤5 μm) without extra emulsifiers.

  3. Optical Transparency: Preserves clarity in high-end clear shower gel formulations.

  4. Fast-Acting Performance: Lowers surface tension by >65% within 5 seconds of contacting foam.

  5. Cost-Saving Advantage: Requires 30% less dosage than traditional defoamers, with 6-month dilution stability.

Areas of Application of DOW SYL-OFF EM 7989 Defoamer

  1. Bath Products: Manages foam in SLES/AES systems (0.02-0.5% dosage).

  2. Shampoos: Eliminates microfoam when adding silicone emulsions.

  3. Skincare Emulsions: Compatible with O/W systems during 60°C homogenization.

  4. Household Cleaners: Suppresses foam in pH 12 alkaline degreasers.

  5. Hotel Amenities: Meets GB/T 29679-2013 for compatibility with fragrances and preservatives.

Specifications Of DOW SYL-OFF EM 7989 Defoamer

Type
Self-emulsifying silicone defoamer
Appearance
Transparent to milky liquid
Active Content
Polydimethylsiloxane + hydrophobic silica (30%)
Dynamic Viscosity
200-500 mPa·s
pH Range
3-10
Surface Tension
24.0 dyn/cm
Flash Point
>90°C (closed cup)
Thermal Stability
No stratification (80°C/48h)
Recommended Dosage
0.02%-0.5%
Shelf Life
24 months (sealed, 5-35°C)
Packaging
25kg/PE drum or 200kg/IBC tote


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