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Dow XIAMETER PMX-200 Silicone Fluid 20 cSt is a high-performance low-viscosity polydimethylsiloxane fluid in the XIAMETER series, designed for personal care, industrial lubrication, surface treatment and other multi-field applications. With 100% active ingredient as the core, it features excellent hydrophobicity, wide temperature stability and low surface tensionqueous systems, and meets 40 CFR 180.910 standards
Wide Temperature Stability - Excellent high and low temperature resistance, stable operation at -40~200℃
Efficient Hydrophobic Protection - Superior hydrophobicity, enhancing substrate water and stain resistance
Low-Viscosity & Smoothness - Good fluidity with low viscosity, endowing products with refreshing and smooth feel
100% Active Ingredient - High purity without impurities, ready-to-use for various formulation systems
Low Odor & Residue - Mild odor, no white residue after use, improving product experience
Personal Care Field - Moisturizers, lotions, antiperspirants, optimizing skin feel and smoothness
Hair Care Field - Conditioners, hair masks, improving wet/dry combability and antistatic properties
Industrial Lubrication Field - Lubrication for precision machinery and controllers, providing long-term protection
Surface Treatment Field - Metal and furniture polishes, enhancing gloss and stain resistance
| Brand | DOW |
| INCI Name | Dimethicone |
| Chemical Composition | Polydimethylsiloxane (100% Active Ingredient) |
| CAS No. | 63148-62-9 |
| Appearance | Transparent Liquid |
| Kinematic Viscosity (25℃) | 20 Centistokes |
| Specific Gravity (25℃) | 0.949 |
| Flash Point (Closed Cup) | 246 ℃ |
| Flash Point (Open Cup) | > 204 ℃ |
| Pour Point | -84 ℃ |
| Refractive Index (25℃) | 1.4009 |
| Operating Temperature Range | -40 ~ 200 ℃ |
Q1: What is the primary functional role of XIAMETER PMX-200 Silicone Oil in formulations?
A: XIAMETER PMX-200 is a low-viscosity, dimethyl silicone fluid primarily used as a surface modifier to improve slip, leveling, and substrate wetting. It is commonly incorporated to reduce surface tension and enhance gloss uniformity without significantly affecting cure kinetics or film integrity.
Q2: Is PMX-200 compatible with common industrial resins and polymers?
A: Yes — PMX-200 exhibits broad compatibility with acrylics, polyurethanes, alkyds, epoxies, and many thermoplastic and thermoset systems. Compatibility should always be verified under actual processing conditions, especially when high shear or elevated temperatures are involved.
Q3: How does PMX-200 differ from higher-viscosity silicone oils like PMX-205 or PMX-210?
A: PMX-200 has a significantly lower viscosity and faster surface migration rate compared to higher-molecular-weight analogues. This makes it particularly effective for applications requiring rapid surface enrichment—such as release enhancement or transient lubrication—while minimizing bulk-phase interference.
Q4: Can PMX-200 be used in food-contact or pharmaceutical-adjacent applications?
A: XIAMETER PMX-200 is not pre-approved for direct food-contact or pharmaceutical use. While it meets certain general-purpose regulatory expectations for industrial additives, customers must independently assess compliance with applicable regional regulations—including intended exposure conditions and final product specifications—prior to use in such sensitive applications.
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