Gelest SIO6640.1
- CAS Number
- 112-04-9
- Chemical Name
- Trichlorooctadecylsilane
- Chemical Family
- Silanes
- Molecular Formula
- C₁₈H₃₇Cl₃Si
Gelest n-OCTADECYLTRICHLOROSILANE, 97% (SIO6640.1) forms lipophilic surface coatings. It functions as an intermediate and is commonly used in chemical production.
Properties
- Physical Form
- Liquid
Product families
Applications
- Chemical Manufacturing
Product Families
- Other Intermediates
Other characteristics
- Functions
- Intermediate
- Markets
- Industrial
- Features
- Contains <5% C18 isomers
- Provides lipophilic surface coatings
- Technology
- Base Chemicals & Intermediates
- Packaging Under
- Nitrogen
- Applicable Processes
- Chemicals Production
- Chemical Inventories
- AICS (Australia)
- DSL (Canada)
- EINECS (EU)
- ENCS (Japan)
- IECSC (China)
- INSQ (Mexico)
- NZIoC (New Zealand)
- PICCS (Phillipines)
- Base Chemicals Functions
- Intermediate
- Conventional Surface Bonding
Aliphatic, fluorinated aliphatic or substituted aromatic hydrocarbon substituents are the hydrophobic entities which enable silanes to induce surface hydrophobicity. The organic substitution of the silane must be non-polar. The hydrophobic effect of the organic substitution can be related to the free energy of transfer of hydrocarbon molecules from an aqueous phase to a homogeneous hydrocarbon phase. A successful hydrophobic coating must eliminate or mitigate hydrogen bonding and shield polar surfaces from interaction with water by creating a non-polar interphase.. Although silane and silicone derived coatings are in general the most hydrophobic, they maintain a high degree of permeability to water vapor. This allows coatings to breathe and reduce deterioration at the coating interface associated with entrapped water. Since ions are not transported through non-polar silane and silicone coatings, they offer protection to composite structures ranging from pigmented coatings to rebar reinforced concrete.
Technical data
Table 1 of 3
2 rows| Characteristic | Value | Unit |
|---|---|---|
| Boiling Point (at 3 mmHg) | 160 - 162 | °C |
| Melting Point | 22.0 | °C |
Table 2 of 3
5 rows| Characteristic | Value | Unit |
|---|---|---|
| Hydrolytic Sensitivity | 8 (Reacts rapidly with moisture, water, protic solvents) | — |
| Molecular Weight | 387.93 | g/mol |
| Purity (including isomers) | 97.0 | % |
| Density (at 22°C) | 0.95 | g/ml |
| Refractive Index (at 20°C) | 1.4602 | — |
Table 3 of 3
1 row| Characteristic | Value | Unit |
|---|---|---|
| C18 Isomers | max. 5 | % |
