Hexamethyldisiloxane

Synonym(s):2,2,4,4-Tetramethyl-3-oxa-2,4-disilapentane, HMDSO;Hexamethyldisiloxane;HMDSO;Poly(dimethylsiloxane)

CAS NO.：107-46-0
Empirical Formula: C6H18OSi2
Molecular Weight: 162.38
MDL number: MFCD00008265
EINECS: 203-492-7
SAFETY DATA SHEET (SDS)
Update Date: 2023-12-22 17:53:22

What is Hexamethyldisiloxane?

The Uses of Hexamethyldisiloxane

Hexamethyldisiloxane is used as a base fluid in a wide range of personal care products that require fast evaporation and high spreadability. When blended with Dimethicone fluids, It can adjust the residence time of the silicone on the skin. Unlike other volatile fluids, Hexamethyldisiloxane Fluid does not cool the skin as it evaporates. Hexamethyldisiloxane is used as a carrying agent and diluent in the following: skin cream lotions, bath oils, suntan lotions, nail polishes, antiperspirants, deodorants, hair sprays and other beauty and hair care products.
A silicon based compound that can be used to create potentially biocompatible materials.
Used as a monomer in the synthesis of long chain polysiloxane structures.
Used in the methylation of mercury(II) salts.

Properties of Hexamethyldisiloxane

Melting point:	−59 °C(lit.)
Boiling point:	101 °C(lit.)
Density	0.764 g/mL at 20 °C(lit.)
Flash point:	33 °F
storage temp.	Store below +30°C.
solubility	0.00037g/l insoluble
form	liquid
color	Colorless to Almost colorless
Water Solubility	insoluble

Safety information for Hexamethyldisiloxane

Signal word	Danger
Pictogram(s)	Flame Flammables GHS02 Environment GHS09
GHS Hazard Statements	H225:Flammable liquids H410:Hazardous to the aquatic environment, long-term hazard
Precautionary Statement Codes	P210:Keep away from heat/sparks/open flames/hot surfaces. — No smoking. P273:Avoid release to the environment.