Ningbo Inno Pharmchem Co., Ltd. provides essential technical details on 3-Mercaptopropylmethyldimethoxysilane, a critical silane coupling agent widely used across industries. Understanding its properties is fundamental to its effective application.

Chemically identified as 3-Mercaptopropylmethyldimethoxysilane, with the CAS number 31001-77-1, this compound is a bifunctional organosilane. Its molecular structure features a reactive mercapto (-SH) group and two hydrolyzable methoxy (-OCH3) groups attached to a silicon atom, along with a methyl group. This combination provides it with unique reactivity for coupling organic and inorganic materials.

Physically, 3-Mercaptopropylmethyldimethoxysilane is typically described as a colorless to pale yellow transparent liquid. Its purity is generally maintained at a high level, often 98% or more, ensuring consistent performance in formulations. Key physical parameters include a density of approximately 1.000 ± 0.010 and a refractive index of around 1.450 ± 0.010, which are important for quality control and formulation accuracy.

The synthesis of such silanes typically involves hydrosilylation reactions or other organosilicon chemistry pathways. The precise manufacturing process ensures the integrity of the mercapto and methoxy functional groups, which are crucial for its performance as a coupling agent. The presence of the methyl group on silicon also influences its reactivity and compatibility with various systems.

Formulators and researchers rely on these precise specifications to integrate 3-Mercaptopropylmethyldimethoxysilane effectively into their products, whether for improving rubber compounds, enhancing coatings, or treating textiles. The consistent quality and well-defined properties of this silane are paramount to achieving desired material enhancements.