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Water-based paints and decorative coatings commonly generate foam during dispersion, let-down, pumping, tinting, and filling. Entrained air and microfoam can lead to application defects such as pinholes, craters, reduced gloss, poor leveling, and inconsistent film thickness. Foam also reduces manufacturing efficiency by causing overflow, volume inaccuracies, and longer de-aeration times.
FOAMSTAB 8850 is a VOC-free, general-purpose let-down defoamer engineered to control foam across a broad range of latex systems. Its hydrophobic silica and mineral oil chemistry provides rapid foam knockdown and helps control foam re-generation during both production and application.
FOAMSTAB 8850 can be added in the grind or in the let-down stage, provided adequate shear is used for uniform dispersion. With optimized dosage and proper incorporation, it supports smoother processing and cleaner, more uniform films—improving overall coating quality and productivity.
Mineral oil / wax-derivative based defoamer
100%
Not classified as dangerous goods
3824.99
Pale yellow viscous liquid
0.3% to 1% (On total formulation)
Water-based decorative paints (interior/exterior)
Latex emulsion coatings across a broad range of binder systems
Processes involving high-speed dispersion, transfer/pumping, tinting, mixing, and filling/packing, where foam causes downtime, defects, or volume issues
| Parameter | Value / Description |
|---|---|
| Composition | Hydrophobic silica + mineral oil blend |
| Form / Colour | Opaque off-white liquid |
| Flash Point | 165°C |
| Specific Gravity | 0.87 |
| Viscosity (Brookfield) | ~1000 cps (mPa·s) |
Note: Typical values are indicative and should not be treated as product specifications.
Often preferred for decorative water-borne coatings where balanced foam control and broad latex compatibility are needed
Typically offers reliable deaeration with a lower tendency to create silicone-linked recoat or surface sensitivity in many paint systems
Requires correct dispersion and dosage optimization to achieve best defect-free performance
Can deliver very strong foam knockdown at low dosages, especially in severe foaming
In some decorative systems, silicones may increase risk of surface defects (craters/fisheyes) or intercoat sensitivity if not correctly selected
Usually needs careful matching to the formulation and application method
Selection tip: Choose FOAMSTAB 8850 for broad, dependable foam control in water-based decorative/latex systems. Consider silicone defoamers when maximum foam knockdown is required and compatibility is proven through trials.
Store FOAMSTAB 520 in a cool, dry, and well-ventilated area, away from direct sunlight and heat sources.
Keep containers tightly closed when not in use to prevent contamination and solvent loss.
Avoid storing near sparks, open flames, or ignition sources, as the product contains a low-flash hydrocarbon solvent.
If stored below 0 °C, the product may exhibit slight turbidity or separation.
To restore full uniformity, warm gently to approx. 40 °C and stir well before use.
Do not expose sealed containers to temperatures above 45–50 °C to prevent pressure build-up.
Ensure adequate ventilation during use to avoid inhalation of vapors.
Wear appropriate PPE, including gloves, goggles, and protective clothing.
Do not eat, drink, or smoke while handling the product.
Avoid splashing or high-speed addition to prevent localized over-foaming or crater formation.
Use only the original, properly labeled containers supplied by the manufacturer.
Ensure drums and containers are always grounded and bonded during transfer to prevent static discharge.
Use pump or controlled pour methods—avoid rough handling or dropping containers.
Keep away from strong oxidizing agents, acids, and alkalis.
FOAMSTAB 520 remains stable for at least 12 months under recommended storage conditions.
Re-homogenize gently if stored for a long time.
In case of small spills, absorb with inert absorbents like sand or universal absorbent.
Collect the absorbed material into suitable containers for disposal as per local regulations.
Avoid letting the product enter drains, soil, or natural water bodies.
Keep suitable extinguishing media nearby: foam, CO₂, dry powder, or water spray.
Ensure fire protection systems are in place for storage areas containing flammable liquids.
FOAMSTAB 520 is an industrial-grade additive and must not be used in food-contact applications.
Follow all applicable local safety, environmental, and storage regulations.