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ChemicalBook--->CAS DataBase List--->141-63-9

141-63-9

141-63-9 Structure

141-63-9 Structure
IdentificationMore
[Name]

DODECAMETHYLPENTASILOXANE
[CAS]

141-63-9
[Synonyms]

DODECAMETHYLPENTASILOXANE
1,1,1,3,3,5,5,7,7,9,9,9-Dodecamethylpentasiloxane
dodecamethyl-pentasiloxan
Pentasiloxane, dodecamethyl-
Dodecamethyl-2,4,6,8-tetraoxa-1,3,5,7,9-pentasilanonane
Dodecamethylnonanepentasiloxane
Penta(dimethylsiloxane)
[EINECS(EC#)]

205-492-2
[Molecular Formula]

C12H36O4Si5
[MDL Number]

MFCD00039795
[Molecular Weight]

384.84
[MOL File]

141-63-9.mol
Chemical PropertiesBack Directory
[Appearance]

clear colorless liquid
[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.)
[Fp ]

187 °F
[storage temp. ]

Refrigerator
[solubility ]

Benzene (Slightly), Ethyl Acetate (Slightly), Methanol (Slightly)
[form ]

liquid
[color ]

Colourless
[Specific Gravity]

0.876
[Water Solubility ]

70.41ng/L at 23℃
[Hydrolytic Sensitivity]

1: no significant reaction with aqueous systems
[Merck ]

13,3438
[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 DataBack Directory
[Hazard Codes ]

Xi
[Risk Statements ]

R36/37/38:Irritating to eyes, respiratory system and skin .
[Safety Statements ]

S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S36:Wear suitable protective clothing .
[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.
Hazard InformationBack Directory
[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ChEBI: An organosiloxane that is pentasiloxane in which all the hydrogens have been replaced by methyl groups.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]

Nonflammable
[Toxics Screening Level]

The initial threshold screening level (ITSL) for dodecamethylpentasiloxane remains at 0.1 μg/m3 based on an annual averaging time.
Well-known Reagent Company Product InformationBack Directory
[Sigma Aldrich]

141-63-9(sigmaaldrich)
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