DODECAMETHYLPENTASILOXANE Chemical Properties

Melting point:

-81 °C (lit.)

Boiling point:

230 °C (lit.)

Density 

0.875 g/mL at 25 °C (lit.)

vapor pressure 

<1 mm Hg ( 20 °C)

refractive index 

n20/D 1.392(lit.)

Flash point:

187 °F

storage temp. 

Refrigerator

solubility 

Benzene (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)

form 

liquid

Specific Gravity

0.876

color 

Colourless

Water Solubility 

70.41ng/L at 23℃

Hydrolytic Sensitivity

1: no significant reaction with aqueous systems

Merck 

14,3404

Dielectric constant

2.5（20℃）

LogP

9.411 at 25℃

CAS DataBase Reference

141-63-9(CAS DataBase Reference)

EPA Substance Registry System

Pentasiloxane, dodecamethyl- (141-63-9)

Safety Information

Hazard Codes 

Xi

Risk Statements 

36/37/38

Safety Statements 

26-36

RIDADR 

NA 1993 / PGIII

WGK Germany 

3

RTECS 

SB0970000

TSCA 

Yes

HS Code 

2931.90.9010

Hazardous Substances Data

141-63-9(Hazardous Substances Data)

Toxicity

guinea pig,LDLo,oral,50gm/kg (50000mg/kg),Journal of Industrial Hygiene and Toxicology. Vol. 30, Pg. 332, 1948.

MSDS

• Language:English Provider:ACROS
• Language:English Provider:SigmaAldrich

DODECAMETHYLPENTASILOXANE Usage And Synthesis

Chemical Properties

clear colorless liquid

Uses

A non-cyclic polydimethyl siloxane. Study shows that it can be transformed by a specific microflora and in the natural environment degraded by mechanisms similar to other organic compounds.

Uses

As a basis for silicone oils or fluids designed to withstand extremes of temperature; as a foam suppressant in petroleum lubricating oil.

Definition

ChEBI: An organosiloxane that is pentasiloxane in which all the hydrogens have been replaced by methyl groups. Metabolite observed in cancer metabolism.

Flammability and Explosibility

Non flammable

DODECAMETHYLPENTASILOXANE(141-63-9)Related Product Information

• N-(N-OCTADECYL)ACRYLAMIDE
• DODECYLDIMETHYLCHLOROSILANE
• HEXAETHYLDISILOXANE
• methacryloxypentamethyldisiloxane
• HEXAVINYLDISILOXANE
• chloromethylphenethyltris(trimethylsiloxy)silane,mixed m-,p- ,a-,b-isomers
• Methyltris(dimethylsiloxy)silane
• BIS(TRIMETHYLSILOXY)METHYLMETHOXYSILANE
• TETRAKIS(TRIMETHYLSILOXY)SILANE
• CHLOROMETHYLTRIS(TRIMETHYLSILOXY)SILANE
• HEXAPHENYLDISILOXANE
• Methyltris(trimethylsiloxy)silane
• CHLOROMETHYLPENTAMETHYLDISILOXANE
• Trimethylstearylammonium Chloride
• Octadecyltrimethoxysilane
• PENTAMETHYLDISILOXANE
• DODECAMETHYLPENTASILOXANE
• 1,1,3,3,5,5-HEXAMETHYLTRISILOXANE