Nanjing SiSiB Silicones Co., Ltd.
Nanjing SiSiB Silicones Co., Ltd.
SiSiB® PC5310
SiSiB® PC5310


SiSiB® PC5310 is a clear, colourless, caustic and highly flammable liquid with a pungent odour.

SiSiB® PC5310

Technical Data







Molecular Weight


Boiling Point

57°C [760mmHg]

Flash Point


Color and Appearance

Colorless clear liquid

Density 25/25°C


Refractive Index

1.389 [25°C]

Min. Purity



  • All chlorosilanes react with water to produce hydrogen chloride. The remaining hydroxyl group bonds to the silicon, initially forming a silol group (analogous to alcohol). In general, this will eventually bond to a solid oxide surface or react with another chlorosilane or silol molecule. In the latter cases, the oxygen atom forms a link between two silicon atoms, analogous to the ether linkage in organic chemicals, and identical to the bonding in silicon dioxide.

  • Methyl chlorosilanes have one to three methyl groups. In the case of dichlorodimethylsilane, two chlorine atoms are available, so that a reaction with excess water produces a linear chain of ether-like linkages between silicon atoms. As in polyethers, these flexible linkages produce a rubbery polymer, polydimethylsiloxane (PDMS). Trichloromethylsilane can be used to induce branching and cross-linking in PDMS molecules, while chlorotrimethylsilane serves to end backbone chains, limiting molecular weight.

  • Organic chlorosilanes are usually used as coatings for silicon and glass surfaces, and in the production of silicone polymers.

  • SiSiB® PC5310 trimethylchlorosilane cas no. 75-77-4 is a typical Silane Blocking Agent, which can protect or deprotect functional groups selectively. It is widely used in the syntheses of drugs.

Packing and Storage

  • In the unopened original container SiSiB® PC5310 trimethylchlorosilane has a shelf life of one year in a dry and cool place.

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SiSiB® PC5310