3-Chloropropyltriethoxysilane CAS 5089-70-3

Product name:3-Chloropropyltriethoxysilane
CAS:5089-70-3
MF:C9H21ClO3Si
MW:240.8

EINECS: 225-805-6
Boiling point: 100 °C
Density: 1.000 g/mL

Purity:≥99%

Light yellow liquid

1. 3-Chloropropyltriethoxysilane CAS 5089-70-3 is a key silane coupling agent intermediate used in the synthesis of other functional silanes, notably the sulfur-containing silane coupling agents Si-69 and Si-75.
2. 3-Chloropropyltriethoxysilane CAS 5089-70-3 serves as a coupling agent for halogenated rubbers (such as chloroprene rubber, chlorinated butyl rubber, and chlorosulfonated polyethylene) to improve the physical and mechanical properties of rubber compounds filled with inorganic fillers .
3. 3-Chloropropyltriethoxysilane CAS 5089-70-3 is used as a surface modifier for silica gel and nanoparticles, and as an intermediate for synthesizing quaternary ammonium-functionalized organosilicon compounds with antibacterial and antistatic properties .

1. Store 3-Chloropropyltriethoxysilane CAS 5089-70-3 in a tightly closed container in a cool, dry, and well-ventilated area, protected from moisture .
2. 3-Chloropropyltriethoxysilane CAS 5089-70-3 is moisture-sensitive and should be stored under an inert gas atmosphere; exposure to moisture causes decomposition .
3. Keep 3-Chloropropyltriethoxysilane CAS 5089-70-3 away from heat, sparks, open flames, and incompatible materials such as strong acids, bases, and oxidizing agents .

1. 3-Chloropropyltriethoxysilane CAS 5089-70-3 is classified as a combustible liquid (GHS Category 4) with the signal word Warning .
2. 3-Chloropropyltriethoxysilane CAS 5089-70-3 has low acute toxicity, with oral LD50 > 2,000 mg/kg in rats and dermal LD50 > 2,000 mg/kg in rabbits, and is not a skin or eye irritant in animal tests .
3. Thermal decomposition of 3-Chloropropyltriethoxysilane CAS 5089-70-3 can release toxic and corrosive gases including hydrogen chloride, carbon oxides, and silicon oxides .

1. 3-Chloropropyltriethoxysilane CAS 5089-70-3 is not safe for uncontrolled handling due to its flammability and moisture sensitivity .
2. 3-Chloropropyltriethoxysilane CAS 5089-70-3 requires protective equipment including safety goggles, protective gloves, and appropriate clothing, and should be used with adequate ventilation .
3. 3-Chloropropyltriethoxysilane CAS 5089-70-3 must not be released into drains or the environment; spills should be absorbed with inert material and disposed of as hazardous waste .

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