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.
Process Adaptability: Works in pH 3-10 systems with SLES/AES surfactants.
Self-Dispersing Ability: Achieves nano-scale dispersion (D50≤5 μm) without extra emulsifiers.
Optical Transparency: Preserves clarity in high-end clear shower gel formulations.
Fast-Acting Performance: Lowers surface tension by >65% within 5 seconds of contacting foam.
Cost-Saving Advantage: Requires 30% less dosage than traditional defoamers, with 6-month dilution stability.
Bath Products: Manages foam in SLES/AES systems (0.02-0.5% dosage).
Shampoos: Eliminates microfoam when adding silicone emulsions.
Skincare Emulsions: Compatible with O/W systems during 60°C homogenization.
Household Cleaners: Suppresses foam in pH 12 alkaline degreasers.
Hotel Amenities: Meets GB/T 29679-2013 for compatibility with fragrances and preservatives.
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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E-mail: wangxingqiang@ericwchem.com
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