Bis[3-(triethoxysilyl)propyl]tetrasulfide
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Product Description
Bis[3-(triethoxysilyl)propyl]tetrasulfide
Specification of Product
Product Name : Coupling agent Si-69
Chemical Name: Bis[3-(triethoxysilyl)propyl]tetrasulfide
Cas No.: 40372-72-3
Molecular formula: C18H42O6S4Si2
![Bis[3-(triethoxysilyl)propyl]tetrasulfide|Cas 40372-72-3|Coupling agent Si-69|China|Manufacturer|Factory|Supplier|Exporter-Hosea Chem](/ueditor/php/upload/image/20250913/1757736463764153.png "Bis[3-(triethoxysilyl)propyl]tetrasulfide|Cas 40372-72-3|Coupling agent Si-69|China|Manufacturer|Factory|Supplier|Exporter-Hosea Chem")
Coupling agent Si-69 [ Bis[3-(triethoxysilyl)propyl]tetrasulfide ] Physical Data
Appearance Light yellow to yellow transparent liquid
content(%), ≥ 22.0
Density (ρ20 ), g/cm3 1.089±0.005
Refractive index (n) 1.4850±0.0005
Viscosity 11.2cst
Coupling agent Si-69 [ Bis[3-(triethoxysilyl)propyl]tetrasulfide ] Properties
This product is a light yellow transparent liquid with a slight ethanol odor. It is soluble in ethanol, ketones, benzene, acetonitrile, dimethylformamide, dimethyl sulfoxide, and chlorinated hydrocarbons.
Packaging, transportation, and storage
Package：200 liter PVF iron drum, IBC drum.
This product should be stored in a dry, light-proof indoor warehouse to prevent moisture.
During the storage, transportation and loading and unloading of this product, avoid rain; avoid direct sunlight; ensure that it is dry and the packaging bag is not damaged or contaminated by other items; do not mix or store with toxic or harmful items; do not store at high temperatures.
Coupling agent Si-69 [ Bis[3-(triethoxysilyl)propyl]tetrasulfide ] Applications
It is commonly used to treat inorganic fillers such as carbon black and SiO2. It functions not only as an activator and coupling agent, but also as a crosslinker, softener, and reinforcing agent. In the rubber industry, it is used as a reinforcing agent and vulcanizer. It can be used with natural rubber, isoprene rubber, styrene-butadiene rubber, butadiene rubber, butyl rubber, chloroprene rubber, butyl rubber, halogenated butyl rubber, EPDM rubber, and their oil-extended rubbers. It can also be used in blends of these rubbers.