3-Mercaptopropyltrimethoxysilane KH-591

• Product Name3-Mercaptopropyltrimethoxysilane KH-591
  CAS No.4420-74-0
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  Molecular Structure

Detailed Description


Chemical Name: Silane coupling agent - 3-Mercaptopropyltrimethoxysilane, MTMO

Trade name: KH-591, A-189,Z-6062,KBM-803



1. Properties:

Specification: Soluble in methanol, ethanol, isopropanol, mineral spirits, acetone, benzene, toluene, xylem, and in water when suitable hydrolysis procedures are followed.
CAS NO.: 4420-74-0
Purity: >= 98%
Formula: C6H16O3SSi
Molecular Weight: 196.4
Boiling Point: 93
Density (20) g/cm3: 1.051
Refractive Index (n25D): 1.440
2. Equivalents:

Momentive (formerly OSi Specialties ) Silquest A-189
Dow Corning Z-6062
ShinEtsu KBM-803
EVONIK Degussa Dynasylan MTMO
Wacker GENIOSIL GF 70
Chisso Sila-Ace S810
UCT Specialties (formerly Petrarch) M8500


3. Application:

Used to improve the properties of the mineral-filled elastomeric, including modulus, tensile and tear strength, heat buildup, abrasion resistance, resilience, compression set and cure time may be achieved with KH-591.



This silane chemically bonds reinforcing minerals such as silica, clay, mica and talc to the polymer matrix especially the sulfur-cured and metal oxide-cured rubber and elastomer. It can be used as a pretreatment on minerals or added at the time of compounding.
Mineral-reinforced rubbers such as shoe soles, rollers, wheels, white sidewalls, wire and cable insulation are the common case KH-591 could be used in.