Dichlorodiethylsilane

CAS 1719-53-5(C2H5)2SiCl2Chemical Synthesis

Dichlorodiethylsilane (CAS: 1719-53-5), with the linear formula (C2H5)2SiCl2 and a molecular weight of 157.11 g/mol, is a reactive organosilicon compound. It serves as a valuable intermediate and reagent in organic synthesis, particularly for introducing diethylsilyl groups. Its applications span the synthesis of silicon-containing polymers and as a derivatizing agent in analytical chemistry.

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Dichlorodiethylsilane ((C2H5)2SiCl2) — chemical structure, CAS 1719-53-5; Chemistry, fine chemical supplied by Tech Serve Solutions

Chemical SynthesisSilicon-BasedSynthetic Reagents

01 /Applications

Intermediate in Organic Synthesis

Dichlorodiethylsilane is employed as a key building block in the synthesis of various organosilicon compounds. Its reactive silicon-chlorine bonds allow for facile functionalization, enabling the construction of complex molecular architectures.

Protecting Group Chemistry

This compound can be utilised to introduce diethylsilyl protecting groups onto molecules containing hydroxyl or amino functionalities. This protection strategy is useful in multi-step syntheses where selective reactions are required.

Polymer Science

Dichlorodiethylsilane acts as a monomer or comonomer in the production of silicone-based polymers. These polymers find applications in materials science due to their thermal stability, flexibility, and electrical insulation properties.

Derivatizing Agent

In analytical chemistry, it can be used as a derivatizing agent to improve the volatility or detectability of certain compounds for techniques like gas chromatography.

02 /Properties

Molecular weight	157.11
Linear formula	(C2H5)2SiCl2
Assay	97%
Boiling point	125-131 °C(lit.)
Density	1.05 g/mL at 25 °C(lit.)
Refractive index	n20/D 1.43(lit.)
Storage temperature	2-8°C

03 /Safety & handling

GHS hazard pictogram: Flammable (GHS02) — Flammable

GHS hazard pictogram: Corrosive (GHS05) — Corrosive

GHS hazard pictogram: Harmful / irritant (GHS07) — Harmful / irritant

Danger

Hazard statements

H226Flammable liquid and vapour
H314Causes severe skin burns and eye damage
H335May cause respiratory irritation

Precautionary statements

P261Avoid breathing dust, fume, gas or vapours
P280Wear protective gloves, clothing and eye/face protection
P305IF IN EYES
P310Immediately call a POISON CENTER or doctor

Protective equipment	Faceshields, full-face respirator (US), Gloves, Goggles, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter
Flash point	26 °C / 78.8 °F
Transport (UN / ADR)	UN 1767 3(8) / PGII
Water hazard class (WGK, DE)	3
Hazard codes (EU)	C
Risk statements (R)	10-14-34-37
Safety statements (S)	26-36/37/39-43-45
Supplemental hazards	Reacts violently with water.

Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.

04 /Identifiers & registry

CAS number

1719-53-5

MDL number

MFCD00000493

PubChem substance

24856572

Beilstein registry

605313

05 /Quality & supply

Documentation

Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.

Supply & logistics

Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.

06 /Frequently asked questions

What is Dichlorodiethylsilane used for?

Dichlorodiethylsilane is primarily used as an intermediate in organic synthesis, for introducing diethylsilyl protecting groups, in the synthesis of silicon-containing polymers, and as a derivatizing agent in analytical chemistry.

What is the CAS number and formula for Dichlorodiethylsilane?

The CAS number is 1719-53-5 and the linear formula is (C2H5)2SiCl2.

What grade and purity does Tech Serve Solutions supply?

Tech Serve Solutions supplies Dichlorodiethylsilane with an assay of 97%. We do not represent this product as USP, BP, or EP grade.

How should Dichlorodiethylsilane be handled safely?

Dichlorodiethylsilane is a flammable liquid and vapour, causes severe skin burns and eye damage, and may cause respiratory irritation. It reacts violently with water. Handle with extreme caution in a well-ventilated area, using appropriate personal protective equipment including chemical-resistant gloves, eye protection, and respiratory protection. Ensure storage is in a cool, dry place, away from moisture and ignition sources.