PENTAMETHYLCYCLOPENTASILOXANE Property

Melting point:

-108°C

Boiling point:

54 °C/10 mmHg (lit.)

Density 

0.992 g/mL at 25 °C (lit.)

vapor pressure 

0.05-91Pa at 20℃

refractive index 

n20/D 1.392(lit.)

Flash point:

39°C

storage temp. 

2-8°C

form 

liquid

Specific Gravity

0.998

Water Solubility 

110-1000000000μg/L at 20℃

Hydrolytic Sensitivity

3: reacts with aqueous base

BRN 

1792134

LogP

-2.4-6.33 at 20℃

EPA Substance Registry System

Cyclopentasiloxane, 2,4,6,8,10-pentamethyl- (6166-86-5)

Safety

Hazard Codes 

Xi

Risk Statements 

10-36/37/38

Safety Statements 

16-26-36

RIDADR 

UN 1993 3/PG 3

WGK Germany 

3

F 

10-21

TSCA 

Yes

Hazard and Precautionary Statements (GHS)

Symbol(GHS)

Signal word

Warning

Hazard statements

H226Flammable liquid and vapour

Precautionary statements

P210Keep away from heat/sparks/open flames/hot surfaces. — No smoking.

P233Keep container tightly closed.

P240Ground/bond container and receiving equipment.

P241Use explosion-proof electrical/ventilating/lighting/…/equipment.

P242Use only non-sparking tools.

P243Take precautionary measures against static discharge.

PENTAMETHYLCYCLOPENTASILOXANE Chemical Properties,Usage,Production

Uses

2,4,6,8,10-Pentamethylcyclopentasiloxane is an active reagent in the preparation of cyclolinear polysiloxanes and in the preparation of novel class of hybrid polyurethanes.

Flammability and Explosibility

Flammable