DOW XIAMETER PMX-0345 is a volatile silicone blend of cyclopentasiloxane and cyclohexasiloxane, designed for premium personal care formulations. It appears as a colorless liquid (viscosity 6 cSt) and maintains stable performance under pH 3-10 and ≤80°C conditions, featuring rapid evaporation (boiling point 217°C) and a silky skin feel. Certified by REACH and TSCA, its optimized sensory enhancement cuts mineral oil carrier usage by 40% in antiperspirants and sunscreens.
Volatile Carrier: Evaporates completely without leaving an oily residue.
Broad Compatibility: Stable when mixed with chemical sunscreens and natural oils.
Low Surface Tension: 20.8 mN/m (1% solution) boosts makeup spreadability.
Sensory Benefits: Improves wet combing in hair care products (1-75% dosage).
Eco-Certified: Vegan-friendly and Non-GMO compliant.
Antiperspirants: Reduces stickiness in roll-on formulas (5-20% dosage).
Sunscreens: Enhances titanium dioxide dispersion in SPF50+ lotions.
Makeup: Minimizes "caking" in foundation (1-20% dosage).
Hair Styling: Extends curl retention in hair sprays.
Nail Polishes: Improves gloss without relying on phthalates.
Type | Volatile silicone blend |
Appearance | Colorless transparent liquid |
Main Components | Cyclopentasiloxane (60-70%), Cyclohexasiloxane (30-40%) |
Dynamic Viscosity | 6 cSt |
Surface Tension | 20.8 mN/m |
Boiling Point | 217°C |
Flash Point | 77°C (closed cup) |
Density | 0.957 g/cm³ |
Shelf Life | 900 days (sealed, ≤25°C) |
Packaging | 1kg/PE bottle to 200kg/stainless steel drum |
Q1: What types of industrial systems is PMX-0345 most commonly used in?
A: PMX-0345 is widely employed in water-based industrial coatings, architectural paints, adhesives, and construction mortars where rapid foam suppression and long-term defoaming performance are required—especially in high-shear mixing or roller-applied formulations.
Q2: How should PMX-0345 be incorporated into a formulation for optimal performance?
A: It is typically added during the let-down or post-addition stage, after high-shear dispersion of pigments and fillers. Pre-dilution with water or compatible solvent may improve uniform distribution, particularly in low-viscosity systems.
Q3: Does PMX-0345 affect gloss, clarity, or film appearance in finished coatings?
A: When used within recommended dosage ranges, PMX-0345 generally does not negatively impact gloss retention, transparency, or surface aesthetics in clear or pigmented systems—making it suitable for both decorative and functional coatings.
Q4: Is PMX-0345 compatible with common thickeners and rheology modifiers?
A: Yes, PMX-0345 demonstrates good compatibility with associative and non-associative thickeners—including HEUR, HEC, and alkaline-swellable emulsions—without causing viscosity instability or phase separation under typical formulation conditions.
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