Siloxanes | Cyclosiloxanes | Organosiloxanes | Cyclic Siloxanes

SiSiB® PC9100

Octamethylcyclotetrasiloxane (D4)
Synonym: Cyclic dimethylsiloxane tetramer;

Countertype of Wacker SEMICOSIL 8MCTS

Chemical Structure


SiSiB® PC9100 is a volatile octamethylcyclotetrasiloxane fluid designed for a wide variety of applications including cosmetic/personal care, industrial cleaning and carrier applications. SiSiB® PC9100 exhibits very low toxicity and is exempt from federal VOC regulations.

Typical Physical Properties

Chemical Name: Octamethylcyclotetrasiloxane(D4)
CAS No.: 556-67-2
EINECS No.: 209-136-7
Empirical Formula: C8H24O4Si4
Molecular Weight: 296.61
Boiling Point: 175°C [760mmHg]
Flash Point: 60°C
Color and Appearance: Colorless clear liquid
Density [25°C]: 0.956
Refractive Index [25°C]: 1.3968[25°C]
Purity: 99.0% by GC


SiSiB® PC9100 is a base fluid in a number of personal care products, with excellent spreading and lubrication properties and unique volatility characteristics.

SiSiB® PC9100 can be used in antiperspirants, bath oils, deodorants, skin creams, lotions, suntan and shaving products, nail polishes.

SiSiB® PC9100 has faster drying time in low VOC formulate in hair sprays.


Net weight 180Kg steel drum or net weight 900Kg IBC containers, for more details, please visit Packing Centre.

Technical Library

Download Technical Data Sheet Safety Data Sheet 中文


Download SiSiB® SILANES & SILICONES 2014
Guide SiSiB® SILANE Selection Guide Guide SiSiB® SILANE Cross Reference Guide