SH-633 Polyether Modified Silicone Fluids
SH-633 (CAS 67762-85-0) is a high-performance polyether-modified silicone fluid designed to provide superior surface activity in a wide range of industrial and specialty chemical applications. With its nonionic nature and excellent compatibility, SH-633 delivers outstanding wetting, leveling, and defoaming effects across aqueous, solvent-based, and 100% solid systems.
Technical Specifications
| Property | Typical Value |
|---|---|
| Chemical Name | Dimethylsiloxane, ethylene oxide/propylene oxide block copolymer |
| INCI Name (typical) | PEG/PPG Dimethyl Ether Dimethicone |
| CAS NO | 67762-85-0 |
| Molecular Type | Nonionic polyether-siloxane copolymer |
| Appearance | Transparent to slightly hazy liquid |
| Color | Colorless to light yellow |
| Active Content | ≥ 99% |
| Viscosity @ 25°C | 800–1200 mPa·s |
| Density @ 25°C | 1.01–1.04 g/cm³ |
| Surface Tension (0.1 wt%) | ≤ 22 dyn/cm |
| Cloud Point (1% in water) | 36–44°C |
| Solubility | Soluble or dispersible in water |
| Ionic Character | Nonionic |
Functional Benefits
Surface Tension Reduction: Significantly improves substrate wetting and coating uniformity
Leveling Agent: Enhances flow and smoothness in paints, inks, and coatings
Anti-Cratering Performance: Prevents film defects in high-gloss formulations
Slip & Anti-Blocking: Improves scratch resistance and surface lubricity
Excellent Compatibility: Stable across a broad pH range and various formulation systems
Recommended Applications
SH-633 silicone surfactant is widely used across multiple industries due to its excellent multifunctionality:
Waterborne and Solventborne Paints & Coatings – leveling, defoaming, wetting
Printing Inks – anti-cratering, flow control
Plastics & Elastomers – internal lubrication, mold release
Textile Finishing – softening, antistatic agent
Personal Care (R&D stage) – surface active additive in conditioning formulations
Safety & Compliance
Regulatory Status: Not classified as hazardous under GHS
Flash Point: >100°C (non-flammable)
Toxicology: Low toxicity; handle with standard chemical hygiene practices
SDS & TDS: Available upon request for regulatory and technical review
Packaging Options:
We offer flexible packaging for both R&D and bulk industrial use:
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1 kg & 5 kg HDPE bottles (sample/lab-scale)
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25 kg pails & 200 kg drums (industrial production)
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1000 kg IBC totes available on request
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Custom viscosity grades and formulations available under Silico® brand lines
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.
Jessica G.
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