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KH-580 (CAS No.4420-74-0)

No. KH-580 silane coupling agent is named as 3-mercaptopropyltrimethoxysilane. Its molecular formula is C6H16O3SSi. The structural formula of this compound is
silane coupling agent

Physical Properties of 3-Mercaptopropyltrimethoxysilane

1. CAS No.:4420-74-0
2. Molecular Weight: 196.34
3. Physical Form: Transparent liquid
4. Color: Light yellow
5. Specific Gravity at 25/25°C: 1.057
6. Boiling Point: 213-215°C
7. Refractive Index (nD 25°C): 1.442
8. Flash Point, Pensky-Martens Closed Cup(1): 88°C


1. The 3-mercaptopropyltrimethoxysilane has special effect used as the metal surface rust inhibitor. It can be used to treat the surface of gold, silver, cooper and other metals. This silane coupling agent helps to improve the corrosion resistance and oxidation resistance of the surface of these metals. It can also enhance the adhesion capacity of resin polymer.
2. In the rubber industry, 3-mercaptopropyltrimethoxysilane is commonly used to process inorganic fillers, such as white carbon black, carbon black, glass fiber and mica, etc. It can effectively improve the mechanical properties and wear resistance of the rubber.
3. This product can also be used in anti-shrinking finishing process for fabric in the textile industry.
4. The 3-mercaptopropyltrimethoxysilane can be used as raw material of hair-care products.

Handling and Storage

This silane coupling agent is commonly sealed and stored in cool and well ventilated place away from fire and water.


The information provided herein was believed by Jiangsu Chenguang Silane Co., Ltd. to be accurate at the time of preparation or prepared from sources believed to be reliable, but it is the responsibility of the user to investigate and understand other pertinent sources of information, to comply with all laws and procedures applicable to the safe handling and use of the product, and to determine the suitability of the product for user's intended application or use. All products supplied by Chenguang are subject to Chenguang's standard terms and conditions of sale. Chenguang makes no warranty, express or implied, concerning the product or the merchantability or fitness thereof for any purpose or concerning the accuracy of any information provided by Chenguang, except that the product shall conform to Chenguang's specifications. Nothing contained herein constitutes an offer for the sale of any product.

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