| Identification | More | [Name]
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED | [CAS]
107-51-7 | [Synonyms]
DIMETHYLBIS(TRIMETHYLSILYLOXY)SILANE
METHYLPOLYSILOXANE
OCTAMETHYLTRISILOXANE
POLYDIMETHYLSILOXANE
POLY(DIMETHYLSILOXANE), 200(R) FLUID
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED
[(CH3)3SiO]2Si(CH3)2
1,1,1,3,3,5,5,5-Octamethyltrisiloxane
CO9816
Dimethylbis(trimethylsiloxy)silane
O9816
octamethyl-trisiloxan
Silane, dimethylbis(trimethylsiloxy)-
TRISILOXANE
POLY(DIMETHYLSILOXANE), 200 FLUID, VISCO SITY 1.0 CST
Polydimethylsiloxane, trimethylsiloxy terminated, 1.0 cSt.
Trisiloxane, octamethyl-
Methylpolysiloxane n(=:)1
1,1,1,3,3,5,5,5-Octamethylpentanetrisiloxane
Octamethylpentanetrisiloxane | [EINECS(EC#)]
203-497-4 | [Molecular Formula]
C8 H24 O2 Si3 | [MDL Number]
MFCD01325012 | [Molecular Weight]
236.534 | [MOL File]
107-51-7.mol |
| Chemical Properties | Back Directory | [Appearance]
clear colourless liquid | [Melting point ]
-82 °C (lit.) | [Boiling point ]
153 °C (lit.) | [density ]
0.82 g/mL at 25 °C(lit.)
| [vapor density ]
>1 (vs air)
| [vapor pressure ]
5.3hPa at 25℃ | [refractive index ]
n20/D 1.384(lit.)
| [Fp ]
99 °F
| [storage temp. ]
Flammables area | [solubility ]
Chloroform (Slightly), DMSO, Methanol (Slightly) | [form ]
liquid | [color ]
Colourless to Pale Yellow | [Specific Gravity]
0.82 | [Water Solubility ]
34μg/L at 23℃ | [Hydrolytic Sensitivity]
1: no significant reaction with aqueous systems | [Merck ]
6748 | [BRN ]
1753063 | [Dielectric constant]
2.3（20℃） | [Stability:]
Hygroscopic | [LogP]
6.6 at 25.3℃ | [CAS DataBase Reference]
107-51-7(CAS DataBase Reference) | [EPA Substance Registry System]
Trisiloxane, octamethyl- (107-51-7) |
| Safety Data | Back Directory | [Risk Statements ]
R10:Flammable. | [Safety Statements ]
S23:Do not breathe gas/fumes/vapor/spray (appropriate wording to be specified by the manufacturer) .
S24/25:Avoid contact with skin and eyes . | [RIDADR ]
UN 1993 3/PG 3
| [WGK Germany ]
3
| [F ]
10-21 | [TSCA ]
Yes | [HazardClass ]
3.2 | [PackingGroup ]
III | [HS Code ]
29319090 |
| Hazard Information | Back Directory | [Chemical Properties]
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED is clear colourless liquid
| [Application]
As a basis for silicone oils or fluids designed to withstand extremes of temp; as a foam suppressant in petroleum lubricating oil. | [Uses]
As a basis for silicone oils or fluids designed to withstand extremes of temp; as a foam suppressant in petroleum lubricating oil. | [Uses]
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED as an excipient Dimethicones in pharmaceutical and cosmetic applications can provide long lasting lubricant, smooth feel and spreads easily.
| [Uses]
POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED is a linear silicone oligomer. Studies demonstrate that it is able to maintain the conformational stability of certain adsorbed proteins such as bovine serum albumin (BSA). Used in the methylation of mercury(II) salts.
| [Definition]
ChEBI: Octamethyltrisiloxane is an organosiloxane that is trisiloxane in which all the hydrogens have been replaced by methyl groups. | [General Description]
Poly(dimethylsiloxane) (PDMS), also known as dimethicone, is an organosilicon compound that is widely used as a siloxane based elastomer. It is a hydrophobic material with attractive physical and chemical properties such as elasticity, optical transparency, tunable surface chemistry, and low electrical conductivity. | [Flammability and Explosibility]
Flammable | [Purification Methods]
Distil it twice, the middle fraction from the first distillation is again distilled, and the middle fraction of the second distillation is used. [Patnode & Wilcock J Am Chem Soc 68 358, Wolcock J Am Chem Soc 68 691 1946, Thompson J Chem Soc 1908 1953, Beilstein 4 IV 4115.] |
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