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Dow XIAMETER PMX-1374 is a high-performance low-viscosity silicone fluid in the XIAMETER series, with hexamethyldisiloxane as the core component. Designed for industrial lubrication, efficient defoaming, electronic cleaning and cosmetic raw material scenarios, it features excellent thermal stability, chemical inertness and low surface tension
Ultra-Low Viscosity & Easy Flow - Excellent fluidity, rapid wetting and spreading
High Thermal & Chemical Stability - Temperature and oxidation resistance, suitable for harsh working conditions
Efficient Defoaming & Antifoaming - Rapid bubble breaking, long-lasting foam inhibition
Low Surface Tension - Improved wetting and spreading performance, suitable for precision scenarios
Volatile & Residue-Free - Rapid volatilization at room temperature, clean surface without residue
Industrial Lubrication - Low-friction long-lasting lubrication for precision mechanical parts
Efficient Defoaming - Rapid defoaming in chemical, coating and daily chemical systems
Electronic Cleaning - Residue-free cleaning and protection for precision electronic components
Personal Care Raw Material - Skin feel and spreading optimization for cosmetics and toiletries
Release Assistance - Efficient release for rubber and plastic molding, improving production efficiency
| Brand | Dow |
| Chemical Composition | Hexamethyldisiloxane (≥ 89.0 %) |
| INCI Name | Hexamethyldisiloxane |
| Appearance | Colorless transparent liquid |
| Viscosity (25℃) | 0.65 mm²/s |
| Flash Point (Closed Cup) | -1 ℃ |
| Specific Gravity (25℃) | 0.65 - 0.67 |
| Refractive Index (25℃) | 1.373 - 1.375 |
| Surface Tension (25℃) | 15.9 mN/m |
Q1: What is the primary functional role of XIAMETER PMX-1374 in formulations?
A: XIAMETER PMX-1374 is a low-viscosity, reactive silicone fluid designed primarily as a surface modifier and leveling agent. It imparts improved substrate wetting, reduced surface tension, and enhanced flow characteristics in coatings, inks, and adhesive systems without significantly affecting cure chemistry or film integrity.
Q2: Is PMX-1374 compatible with common industrial resin systems?
A: Yes — PMX-1374 demonstrates broad compatibility with acrylics, polyurethanes, epoxies, and alkyds. Its reactive silane functionality allows for covalent integration into crosslinked networks, supporting stable performance in both solvent-borne and select water-borne formulations when properly dispersed.
Q3: How should PMX-1374 be incorporated into a formulation to ensure optimal performance?
A: For best results, add PMX-1374 during the let-down stage under moderate agitation. Pre-dilution in a compatible carrier solvent may aid dispersion. Avoid high-shear mixing post-addition to prevent premature hydrolysis or aggregation. Dosage typically ranges from 0.1% to 2% by weight, depending on substrate sensitivity and desired surface effect.
Q4: Does PMX-1374 require special handling or storage conditions?
A: Store in tightly sealed containers under dry, cool conditions (below 30 °C) and protect from moisture and direct sunlight. While not highly volatile, it is hygroscopic and may undergo gradual hydrolysis if exposed to ambient humidity over extended periods — therefore, minimize container opening time and use appropriate inert gas blanketing for long-term bulk storage.
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