1,1,1,3,5,5,5-Heptamethyltrisiloxane Chemical 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

Specific Gravity

0.8136

color 

Colorless to Almost colorless

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℃

CAS DataBase Reference

1873-88-7(CAS DataBase Reference)

NIST Chemistry Reference

Trisiloxane, 1,1,1,3,5,5,5-heptamethyl-,(1873-88-7)

EPA Substance Registry System

Trisiloxane, 1,1,1,3,5,5,5-heptamethyl- (1873-88-7)

Safety Information

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

MSDS

• Language:English Provider:SigmaAldrich

1,1,1,3,5,5,5-Heptamethyltrisiloxane Usage And Synthesis

Uses

Heptamethyltrisiloxane is used to catalyze reduction reactions in organic syntheses.

Description

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.

Chemical Properties

colourless liquid

Uses

1,1,1,3,5,5,5-Heptamethyltrisiloxane is a Basic material for synthetic polyalkyleneoxide modified heptamethyltrisiloxane which is a kind of specific structure surfactant for pesticide additives, coating additives, etc.

Uses

Bis(trimethylsiloxy)methylsilane is an important raw material and intermediate used in organic synthesis, pharmaceutical and dyestuff.

Uses

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.

Flammability and Explosibility

Flammable

References

https://www.alfa.com/zh-cn/catalog/H60586/
Murata, Miki, et al. "Silylation of Aryl Iodides with 1,1,1,3,5,5,5 -Heptamethyltrisiloxane Catalyzed by Transition-Metal Complexes." Synlett 2007.09(2007):1387-1390.
Murata, Miki, et al. "Platinum-Catalyzed Aromatic C—H Silylation of Arenes with 1,1,1,3,5,5,5-Heptamethyltrisiloxane." Cheminform38.50 (2007):no-no.

1,1,1,3,5,5,5-Heptamethyltrisiloxane(1873-88-7)Related Product Information

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