3-Chloropropylmethyldiethoxysilane CAS No.13501-76-3

3-Chloropropylmethyldiethoxysilane CAS No.13501-76-3 is a clear, colorless to slightly yellow liquid with a mild odor. It is a type of organosilicone compound that is used in a variety of applications, including:

  • Epoxy resin curing agents
  • Silicone rubbers
  • Water repellents
  • Fire retardants
  • Anti-static agents

Chemical Properties:

3-Chloropropylmethyldiethoxysilane has the following chemical formula:


Its molecular weight is 210.77376 g/mol. It has a boiling point of 81-83°C [8Kpa]109°C [30Kpa].

Safety Information:

3-Chloropropylmethyldiethoxysilane is a flammable and corrosive substance. It can cause skin and eye irritation, and it can be harmful if inhaled or ingested.

Storage and Handling:

3-Chloropropylmethyldiethoxysilane should be stored in a cool, dry place away from heat and direct sunlight. It should be kept in a tightly sealed container to prevent contamination.


3-Chloropropylmethyldiethoxysilane should be disposed of in accordance with local, state, and federal regulations.

Characteristics and uses:

This product is a reactive silane coupling agent, a colorless transparent liquid, which undergoes hydrolysis and cross-linking reaction under acidic or alkaline conditions. At the same time, it is also an important intermediate of silane coupling agent. It is an important basic raw material for the preparation of coupling agents containing two ethoxy groups. It is widely used in composite materials, coatings, inks and sealing materials, as well as elastomers and low molecular weight. pad plastic resin, etc. It can also be used as an active additive and fixative for rubber and resin.

Packaging and storage:

  1. This product must be sealed and stored in a warehouse with a room temperature of ≤30°C, otherwise it will be hydrolyzed by moisture to form polymers.
  2. This product is slightly irritating to the skin and eyes, so protection should be taken when using it.
  3. Packaging of this product: 200KG plastic packaging barrel and 1000KG plastic packaging barrel.


Product Number PR-1112
Chemical Name 3-Chloropropylmethyldiethoxysilane
English name 3-chloropropyl-diethoxy-methylsilane
Chemical Structure C8H19ClO2Si
Molecular weight 210.78
CAS 13501-76-3
Purity (chromatogram) ≥98%
Refractive index (20°C) 1.4232
Specific gravity 20℃ 0.965
Boiling point °C 81-83°C [8Kpa]109°C [30Kpa]

3-Chloropropylmethyldiethoxysilane CAS No. 13501-76-3 is a colorless transparent liquid with the molecular formula C8H19ClO2Si and the molecular weight 210.78. It belongs to the class of chloro silanes, which are widely used as intermediates for preparing various coupling agents, silicone oils and silane modified polymers.


3-Chloropropylmethyldiethoxysilane has two functional groups: a chloropropyl group and a diethoxymethylsilane group. The chloropropyl group can react with various nucleophiles, such as amines, alcohols, thiols and carboxylic acids, to form covalent bonds. The diethoxymethylsilane group can undergo hydrolysis and condensation reactions to form siloxane bonds. These reactions enable 3-chloropropylmethyldiethoxysilane to act as a coupling agent, a crosslinking agent, a terminating agent, a silylation reagent and an allylation agent.


3-Chloropropylmethyldiethoxysilane has many applications in various industries, such as adhesives and sealants, paints and coatings, rubbers and plastics, textiles and fabrics, wires and cables, electronic and electrical components, personal care and health care. For example, it can be used to improve the adhesion, water resistance, thermal stability and mechanical properties of epoxy resins, polyurethanes, acrylics and silicones. It can also be used to modify the surface properties of silica, glass, metal oxides and other inorganic materials. Moreover, it can be used to synthesize novel silane modified polymers with tailor-made properties and functions.


3-Chloropropylmethyldiethoxysilane is a flammable liquid with a flash point of 80°C (176°F). It is also a corrosive substance that can cause skin and eye irritation. Therefore, it should be handled with care and stored in a cool, dry and well-ventilated place away from heat, sparks, flames and incompatible materials. It should also be protected from moisture and water, as it can react violently with water to produce hydrogen chloride gas.


3-Chloropropylmethyldiethoxysilane is a valuable intermediate for organic silicone materials. It can be used to synthesize various coupling agents, silicone oils and silane modified polymers with diverse applications and benefits, recommend 3-chloropropylmethyldiethoxysilane as a versatile and efficient silane for your needs.