OH-78 Hydroxypropyl-Terminated Polydimethoxysiloxane
Silico® OH-78 Hydroxy-Terminated Methyl Phenyl Silicone Fluid(CAS 80801-30-5) is a reactive linear silicone polymer featuring hydroxyl functional groups at both chain ends. The presence of phenyl groups enhances thermal stability, oxidation resistance, and compatibility with organic materials. It is widely used as a crosslinkable intermediate or additive in advanced silicone formulations.
Technical Data
| Property | Specification |
|---|---|
| Appearance | Clear, colorless to light yellow fluid |
| CAS No. | 80801-30-5 |
| Viscosity (25°C) | 100 ~ 500 cSt (customizable) |
| Hydroxyl Content | 0.5 ~ 3.0 wt% |
| Refractive Index (25°C) | ~1.45–1.47 |
| Density (25°C) | ~1.03 g/cm³ |
| Phenyl Content | Medium to high (adjustable) |
| Solubility | Soluble in most organic solvents |
Applications
Modifier in heat-resistant silicone rubbers
Intermediate for RTV and HTV silicone elastomers
Additive for improving low-temperature flexibility and thermal resistance
Used in specialty coatings, adhesives, and encapsulants
Packaging and Storage
Packaging: Available in 1Kg bottles, 25Kg pails, and 200Kg steel drums
Shelf Life: 12 months in original, unopened containers
Storage Conditions: Store in a cool, dry, and well-ventilated area away from moisture and direct sunlight
All technical data provided is based on current knowledge and experience. Users must test product suitability for intended applications.
No warranties are expressed or implied. Silico® assumes no liability for incidental or consequential damages.
Jessica G.
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