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Silicone Monomers

Methyldichlorosilane

CAS NO.
75-54-7
Formula
CH₃SiHCl₂
Molar mass
115.03 g/mol

01 / OVERVIEW

Product overview

A methylhydrochlorosilane containing a reactive Si–H bond and two hydrolysable chlorine atoms. It is an important intermediate for hydrogen-functional siloxanes and functional silanes.

02 / SPECIFICATION

Typical specification

AppearanceTypical requirement; final limits are stated in the confirmed TDS and batch COA.
Molar mass115.03 g/mol
Boiling point (101.3 kPa)approx. 41 °C
Relative densityapprox. 1.10 g/cm³
Purity (GC)≥98.0%
Water contentTypical requirement; final limits are stated in the confirmed TDS and batch COA.
Acidity / hydrolysable chlorineTypical requirement; final limits are stated in the confirmed TDS and batch COA.
Color (Hazen)Typical requirement; final limits are stated in the confirmed TDS and batch COA.
Key impuritiesTypical requirement; final limits are stated in the confirmed TDS and batch COA.

The values shown are typical reference data, not guaranteed sales specifications. Final limits are defined by the agreed TDS, contract and batch COA.

03 / APPLICATIONS

Applications

01

Hydrogen silicone fluids and siloxanesHydrolysis, condensation and equilibration produce Si–H-functional fluids and crosslinkers.

02

Hydrosilylation intermediateThe Si–H bond reacts with olefins, allyl or vinyl compounds to introduce organic functionality.

03

Functional silanesUsed to synthesize methylsilanes bearing alkyl, haloalkyl or other functional groups.

04

Silicone-rubber crosslinkingDownstream hydrogen siloxanes are used as crosslinkers in addition-cure silicone rubber.

04 / HANDLING

Packaging, storage and transport

Keep the handling system dry and preferably under nitrogen. Avoid inhalation and skin/eye contact. Do not flush spills directly with water; follow the SDS and use a compatible inert absorbent.

1

Typical packagingAvailable in sample packs, drums or IBCs depending on product compatibility and order quantity.

2

Sealing requirementsUse a clean, dry and tightly sealed compatible container; nitrogen protection is recommended for moisture-sensitive grades.

3

Storage conditionsStore in a cool, dry and well-ventilated place away from moisture, heat, ignition sources and incompatible materials.

4

Transport and shelf lifeTransport classification and shelf life depend on the exact grade and must follow the latest SDS and confirmed order specification.

Actual packaging, shelf life and dangerous-goods classification must follow the exact grade, order and latest SDS.

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