1,1,1,3,5,5,5-Heptamethyltrisiloxane , ≥98.0%(GC) , 1873-88-7

Synonym(s):
1,1,1,3,5,5,5-Heptamethyltrisiloxane

CAS NO.：1873-88-7

Empirical Formula: C7H22O2Si3

Molecular Weight: 222.5

MDL number: MFCD00048000

EINECS: 217-496-1

PRODUCT Properties

• Melting point: <0°C
• Boiling point: 142 °C (lit.)
• Density: 0.819 g/mL at 25 °C (lit.)
• vapor pressure: 8.5hPa at 25℃
• refractive index: n20/D 1.382(lit.)
• Flash point: 82 °F
• storage temp.: 15-25°C
• solubility: Chloroform (Soluble), Methanol (Slightly)
• form: clear liquid
• color: Colorless to Almost colorless
• Specific Gravity: 0.8136
• Water Solubility: Miscible with acetone, ethanol, diethyl ether. Insoluble in water.
• Hydrolytic Sensitivity: 3: reacts with aqueous base
• BRN: 1748455
• Stability: Stable. Flammable. Incompatible with strong oxidizing agents.
• InChIKey: QNWOFLWXQGHSRH-UHFFFAOYSA-N
• LogP: 6.2 at 20℃

Description and Uses

Bis (trimethylsiloxy) methylsilane acts as an important raw material and intermediate used in organic synthesis, pharmaceutical and dyestuff. For example, it can be used for the platinum-catalyzed aromatic C-H silylation of arenes. It can also be used for the silylation of aryl iodides.

1,1,1,3,5,5,5-Heptamethyltrisiloxane can be used for the aromatic C-H silylation of arenes in the presence of a platinum complex catalyst.
It can also be used as a reagent to synthesize:

• 3-Octyl-1,1,1,3,5,5,5-heptamethyltrisiloxane, an agricultural adjuvant and sensory performance enhancer used in cosmetic formulations.
• Isoindigo-based conjugated polymer with siloxane-terminated solubilizing group.
• Monosiloxy esters with a variety of acids.

Safety

• Symbol(GHS): GHS02,GHS07
• Signal word: Danger
• Hazard statements: H225-H315-H319-H335
• Precautionary statements: P210-P302+P352-P305+P351+P338
• Hazard Codes: Xi
• Risk Statements: 10-36/37/38
• Safety Statements: 26-36
• RIDADR: UN 1993 3/PG 2
• WGK Germany: 3
• F: 10-21
• TSCA: Yes
• HazardClass: 3
• PackingGroup: II
• HS Code: 29319090