Rubber Chemicals Bis[3-(triethoxysilyl)propyl]tetrasulfide CAS 40372-72-3

Products Description

CAS 40372-72-3 corresponds to bis[3-(triethoxysilyl)propyl]tetrasulfide, commonly known as Silane 69, with a molecular formula of C₁₈H₄₂O₆Si₂S₄ and a molecular weight of 538.95 g/mol.

Bis[3-(triethoxysilyl)propyl]tetrasulfide is a light yellow-transparent liquid with a characteristic sulfur odor. It is primarily used for interfacial modification in materials like rubber and plastics. With a density of 1.07–1.09 g/cm³ (20°C), it is slightly soluble in water but undergoes hydrolysis to form silanol groups and release ethanol, while being fully miscible in organic solvents such as ethanol, toluene, and acetone.

Basic Info

Uses

In the rubber industry, bis[3-(triethoxysilyl)propyl]tetrasulfide is widely applied in manufacturing tires, hoses, tapes, and seals, improving filler dispersion and vulcanization efficiency. In composite materials, it enhances the compatibility of inorganic fillers with plastics, thereby improving product mechanical properties. Additionally, it is used for metal surface treatment to form anticorrosion films.

Company Profile

Gneechem, located in Henan Province, China, is part of the GNEE Group, with 22 years of experience in foreign trade, specializing in providing high-quality chemical raw materials and professional trading services to customers around the world. We supply basic chemical raw materials, fine chemicals and specialty chemicals for a wide range of industries.We are ISO9001 certified and have been recognized by a number of authoritative qualifications at home and abroad, making us a trusted partner of our customers.

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