Carbinol (Hydroxyl) Terminated Polydimethylsiloxane CAS#67674-67-3
Amphiphilic Molecular Structure – Combines hydrophobic siloxane segments with hydrophilic polyoxyethylene chains, providing excellent balance between oil and water compatibility.
Outstanding Surface Activity – Functions effectively as a surfactant and emulsifier, improving dispersion and stability in formulations such as cosmetics, coatings, and textiles.
High Thermal Stability and Compatibility – Demonstrates strong thermal resistance and good compatibility with various organic matrices, ensuring reliable performance in industrial applications.
High Purity and Versatile Intermediate – Typically supplied with 98–99% purity and commonly used as an important intermediate in the synthesis of silicone–polyether copolymers.
Products Description of Carbinol (Hydroxyl) Terminated Polydimethylsiloxane CAS#67674-67-3
Alpha-[3-[1,3,3,3-tetramethyl-1-(trimethylsilyl-oxy)disiloxanyl]propyl-omega-hydroxypolyoxyethylene] is a specialized organosilicon compound containing both siloxane and polyoxyethylene segments. This amphiphilic substance (CAS 67674-67-3) generally appears as a colorless to pale yellow viscous liquid, with a molecular weight ranging from 222.51 to 324.64 g/mol, depending on the length of the polyoxyethylene chain.
Its distinctive molecular structure combines the hydrophobic characteristics of heptamethyltrisiloxane with the hydrophilic properties of polyoxyethylene, making it useful as a surfactant and emulsifier in applications such as cosmetics, coatings, and textiles. The compound also exhibits excellent surface activity, thermal stability, and good compatibility with organic systems, and it is frequently used as an important intermediate in the synthesis of silicone–polyether copolymers.
Commercial products are typically available with 98–99% purity and are usually supplied in sealed containers to prevent moisture absorption.
Parameters
| Melting point | 0°C |
| Boiling point | 0°C |
| density | 1,02 g/cm3 |
| refractive index | 1.558 |
| Fp | 0°C |
| Specific Gravity | 1.02 |
| Hydrolytic Sensitivity | 4: no reaction with water under neutral conditions |
| EPA Substance Registry System | Poly(oxy-1,2-ethanediyl), .alpha.-[3-[1,3,3,3-tetramethyl-1-[(trimethylsilyl)oxy]disiloxanyl]propyl]-.omega.-hydroxy- (67674-67-3) |
Product Application of Carbinol (Hydroxyl) Terminated Polydimethylsiloxane CAS#67674-67-3
Carbinol (Hydroxyl) Terminated Polydimethylsiloxane functions as an effective wetting agent. As a silicone glycol surfactant, it can significantly reduce the surface tension of water even at low concentrations (around 0.1%). It helps improve particle size distribution and enables uniform coating of active ingredients or film-forming materials. This compound is primarily used in spray formulations.
