Chloromethyltrimethoxysilane
- CAS NO.：5926-26-1
- Empirical Formula: C4H11ClO3Si
- Molecular Weight: 170.67
- MDL number: MFCD00468107
- SAFETY DATA SHEET (SDS)
- Update Date: 2026-05-27 17:05:16
What is Chloromethyltrimethoxysilane?
Chemical properties
Clear transparent liquid
The Uses of Chloromethyltrimethoxysilane
Chloromethyltrimethoxysilane may be used in the preparation of 1-methyl-1H-benzimidazole (MBI)-modified nanoparticles.{33} Mesoporous monolithic silica gels can also be prepared from Chloromethyltrimethoxysilane. {34}
General Description
Chloromethyltrimethoxysilane (CMTMS) is a trialkoxysilane with chloromethyl as the organofunctional group having hydrophobic characteristics. Chloromethyl is the electron withdrawing group that improves the mechanical properties of the molecule. CMTMS is mainly utilized as a silane based precursor material for the preparation of surface enhancement based coatings and other silane based products.
Properties of Chloromethyltrimethoxysilane
| Boiling point: | 151 °C (lit.) |
| Density | 1.132 g/mL at 25 °C (lit.) |
| refractive index | 1.407 [25°C] |
| Flash point: | 26 °F |
| form | clear liquid |
| color | Colorless to Almost colorless |
| Specific Gravity | 1.125 |
| Hydrolytic Sensitivity | 7: reacts slowly with moisture/water |
| CAS DataBase Reference | 5926-26-1(CAS DataBase Reference) |
| NIST Chemistry Reference | Silane, chloromethyl-trimethoxy-(5926-26-1) |
Safety information for Chloromethyltrimethoxysilane
| Signal word | Danger |
| Pictogram(s) |
 Flame Flammables GHS02 |
| GHS Hazard Statements |
H225:Flammable liquids |
| Precautionary Statement Codes |
P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. |
Computed Descriptors for Chloromethyltrimethoxysilane
| InChIKey | FPOSCXQHGOVVPD-UHFFFAOYSA-N |
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