Basic Information

Product Name： Octamethyltrisiloxane  

Type: DYJ-183

CAS No.: 107-51-7

Technical Specifications

Purity (%): ≥99.0
Density (25℃, g/cm³): 0.816–0.820
Refractive Index (20℃): 1.382–1.384
Melting Point (℃): –82
Flash Point (℃): 37–55
Boiling Point (℃): 153 (at 760 mmHg)
Viscosity (25℃, cSt): 1.0±0.2
Surface Tension (mN/m): ~20

Applications

1. Agricultural Field: As a high-efficiency silicone synergistic adjuvant, it is widely used in pesticide tank-mixes and formulations. It significantly improves the wetting, spreading, and adhesion of spray solutions, reduces drift, and ensures crop safety with its low-foam and mild penetration characteristics.

2. Electronics & Precision Industry: Used as a cleaning agent for precision equipment, a moisture-proof and insulating fluid for electronic components, and a leveling agent in coatings and inks to improve surface uniformity.

3. Personal Care & Cosmetics: As a volatile silicone oil, it is used in lotions, sunscreens, and makeup products to provide a light, non-greasy, residue-free skin feel with oil-control and spreading benefits.

4. Pharmaceuticals & Chemical Synthesis: Used as a pharmaceutical excipient, gas chromatography stationary phase, analytical reagent, and raw material for organic silicone synthesis.

5. Industrial Lubrication & Heat Transfer: Applied in low-temperature lubricants, heat transfer fluids, and damping fluids for mechanical, electronic, and aerospace applications requiring low-temperature performance.