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Foamstab FS 730 is a high-efficiency, 12% active fluorosilicone-based defoamer engineered for premium solvent-borne coating systems that demand extremely fast foam knockdown and superior surface levelling.
The advanced fluorosilicone chemistry in FS 730 provides enhanced defoaming strength, deeper air-release capability, and broader compatibility compared to conventional silicone or low-active defoamers.
Its elevated 12% active content ensures more powerful, longer-lasting foam control, especially in high-solids PU, epoxy, alkyd, automotive refinish, and protective coating systems.
FS 730 is also specially designed for clear coats, where surface smoothness, wetting balance, gloss retention, and absence of defects are critical.Foamstab FS 730 performs consistently during grinding, dispersion, pumping, filling, and high-speed spray applications, delivering crystal-clear, defect-free coatings with exceptional flow and leveling.
Fluorosilicone Defoamer; Fluorosiloxane Antifoam; FS-Series Fluorinated Silicone Defoamer; Fluoropolymer-Based Defoamer
Not applicable
Mixture — no single CAS number assigned
Not assigned
3909 40 00
Hazardous & Flammable liquid
Clear Liquid
12%
1.08 – 1.18 g/cm³
PU clear coats (automotive, wood, industrial)
High-gloss and ultra-clear transparent coatings
Spray-applied refinishing systems
2K PU industrial coatings
Epoxy primers & epoxy topcoats
High-build corrosion-resistant coatings
PU wood clear & pigmented finishes
NC lacquers and AC lacquers
High-solids clear coats
Primer-surfacer & refinishing systems
Epoxy floor coatings
PU flooring & heavy-duty systems
Grinding, bead milling, dispersion
Spray application, pumping, filling
| Parameter | Value / Description |
|---|---|
| Appearance | Solution of polyolefin |
| System Compatibility | Solvent-borne & solvent-free systems |
| Recommended For | PUR coatings, epoxy coatings, PVC plastisols |
| Density (20 °C) | 0.77 g/ml |
| Non-Volatile Matter (150 °C / 10 min) | 25% |
| Solvent System | Isoparaffin |
| Flash Point | 41 °C |
| Technical Grade | Not suitable for food-contact applications |
| Storage Condition | May show separation/turbidity < 0 °C |
| Storage Handling | Warm to 40 °C and mix well before use |
| Defoaming Strength | Strong defoaming with high incompatibility (check in clear coats) |
| Recommended Dosage | 0.1 – 1% (as supplied) based on total formulation |
| Optimal Addition Point | Mill base (best), or later with high shear |
The fluorosilicone system simultaneously:
Breaks foam instantly
Enhances flow, leveling, and surface uniformity
Reduces surface tension without causing defects
Much stronger & longer-lasting than conventional 1–5% silicone defoamers
Ideal for demanding industrial & automotive systems
No haze, fisheyes, dimples, or cratering
Maintains optical clarity & high gloss
Ideal for PU, NC, and acrylic clear finishes
Fluorosilicone backbone remains active in strong solvents, aromatics, and high-solids formulations
Avoids surface defects common with traditional silicone oils
Works smoothly in PU, epoxy, alkyd & solvent-borne acrylics
Grinding, dispersion, spraying, pumping — maintains performance
Smoother leveling
Bubble-free coatings
High clarity & consistent finish
Ideal for epoxy flooring & high-build protective coatings
Eliminates deeper air entrapment
FOAMSTAB 520 is a polymer-based, silicone-free defoamer formulated in a hydrocarbon solvent system with a low flash point, and must be handled as a flammable liquid.
Vapors may form flammable mixtures with air near heat or ignition sources.
Prolonged or repeated exposure may cause mild skin or eye irritation.
Use only in well-ventilated areas to avoid inhalation of vapors or aerosol mist.
Avoid direct contact with skin and eyes; wear protective gloves, goggles, and suitable clothing.
Do not smoke, eat, or drink while handling the product.
Ensure proper grounding and bonding when transferring material to prevent static discharge.
Always keep the container tightly closed after use.
Store in a cool, dry, and well-ventilated area, away from heat, sparks, open flames, and other ignition sources.
At low temperatures, FOAMSTAB 520 may show slight turbidity or separation; warm gently to ~40 °C and mix well before use.
Protect from direct sunlight and store in original, properly labeled containers.
Inhalation: Move affected person to fresh air and keep comfortable. Seek medical attention if symptoms appear.
Skin Contact: Wash thoroughly with soap and water. Remove contaminated clothing. Seek medical attention if irritation develops.
Eye Contact: Rinse with clean water for several minutes. Remove contact lenses if present. Seek medical assistance if irritation persists.
Ingestion: Do not induce vomiting. Rinse mouth and seek immediate medical attention.
Use foam, CO₂, dry chemical, or water spray to extinguish.
Burning may produce irritating fumes and combustion gases.
Firefighters should wear full protective gear and self-contained breathing apparatus (SCBA).
Eliminate ignition sources and ensure good ventilation.
Absorb spilled material with inert absorbents (sand, diatomaceous earth, universal absorbent).
Collect residues in suitable containers for disposal as per local regulations.
Prevent contamination of drains, surface water, or soil.
Avoid uncontrolled release into the environment.
Dispose of waste material, absorbents, and containers strictly in accordance with local disposal rules.
FOAMSTAB 520 is supplied as a technical-grade industrial chemical and is not intended for food-contact applications.
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.
Ideal for laboratory use, small batch production, and formulation trials.
Suitable for medium-scale users and consistent monthly consumption.
Economical option for bulk users and large-volume manufacturing facilities.