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Octamethyltrisiloxane

CAS No.
107-51-7
Chemical Name:
Octamethyltrisiloxane
Synonyms
Trisiloxane, octamethyl-;TRISILOXANE;OCTAMETHYLTRISILOXANE;METHYLPOLYSILOXANE;1,1,1,3,3,5,5,5-Octamethyltrisiloxane;O9816;CO9816;FRD 20;KF 96A1cs;KF 96L1.0
CBNumber:
CB3236712
Molecular Formula:
C8H24O2Si3
Molecular Weight:
236.53
MDL Number:
MFCD00008264
MOL File:
107-51-7.mol
MSDS File:
SDS
Last updated:2024-11-01 18:09:03

Octamethyltrisiloxane Properties

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.)
Flash point 99 °F
storage temp. Inert atmosphere,Room Temperature
solubility Chloroform (Slightly), DMSO, Methanol (Slightly)
form liquid
Specific Gravity 0.82
color Colourless to Pale Yellow
Viscosity 0.842mm2/s
Water Solubility 34μg/L at 23℃
Hydrolytic Sensitivity 1: no significant reaction with aqueous systems
Merck 14,6748
BRN 1753063
Dielectric constant 2.3(20℃)
Stability Hygroscopic
LogP 6.6 at 25.3℃
CAS DataBase Reference 107-51-7(CAS DataBase Reference)
EWG's Food Scores 2
FDA UNII 9G1ZW13R0G
EPA Substance Registry System Trisiloxane, octamethyl- (107-51-7)

SAFETY

Risk and Safety Statements

Symbol(GHS)  GHS hazard pictograms
GHS02
Signal word  Warning
Hazard statements  H226
Precautionary statements  P210-P233-P240-P241-P242-P243
Risk Statements  10
Safety Statements  23-24/25
RIDADR  UN 1993 3/PG 3
WGK Germany  3
10-21
TSCA  Yes
HazardClass  3.2
PackingGroup  III
HS Code  29319090
NFPA 704
2
2 0

Octamethyltrisiloxane price More Price(13)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 235709 Octamethyltrisiloxane 98% 107-51-7 5ml $45.8 2024-03-01 Buy
Sigma-Aldrich 235709 Octamethyltrisiloxane 98% 107-51-7 100ml $261 2024-03-01 Buy
TCI Chemical O0257 Octamethyltrisiloxane >98.0%(GC) 107-51-7 25mL $55 2024-03-01 Buy
TCI Chemical O0257 Octamethyltrisiloxane >98.0%(GC) 107-51-7 100mL $141 2024-03-01 Buy
Sigma-Aldrich 469319 Poly(dimethylsiloxane) viscosity 1.0 cSt (25 °C) 107-51-7 50ml $183 2024-03-01 Buy
Product number Packaging Price Buy
235709 5ml $45.8 Buy
235709 100ml $261 Buy
O0257 25mL $55 Buy
O0257 100mL $141 Buy
469319 50ml $183 Buy

Octamethyltrisiloxane Chemical Properties,Uses,Production

Chemical Properties

Octamethyltrisiloxane 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

Octamethyltrisiloxane is a linear silicone oligomer. It is used as an excipient Dimethicones in pharmaceutical and cosmetic applications can provide long lasting lubricant, smooth feel and spreads easily. 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.]

1825-62-3
75-78-5
107-51-7
Synthesis of Octamethyltrisiloxane from Ethoxytrimethylsilane and Dichlorodimethylsilane
Global( 240)Suppliers
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Hebei Mojin Biotechnology Co., Ltd
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View Lastest Price from Octamethyltrisiloxane manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Octamethyltrisiloxane pictures 2024-11-01 Octamethyltrisiloxane
107-51-7
US $0.00 / KG 1KG 99% 500000kg Hebei Weibang Biotechnology Co., Ltd
Octamethyltrisiloxane pictures 2024-10-11 Octamethyltrisiloxane
107-51-7
US $10.00 / KG 1KG 99.% 10 ton Hebei Chuanghai Biotechnology Co,.LTD
Octamethyltrisiloxane IOTA 201-1 pictures 2024-09-20 Octamethyltrisiloxane IOTA 201-1
107-51-7
US $3.56-2.21 / kg 200kg 100% 1000ton/Month Iota silicone oil (Anhui) Co.,ltd.
DIMETHYLBIS(TRIMETHYLSILYLOXY)SILANE POLY(DIMETHYLSILOXANE), HYDROXY TERMINATED POLY(DIMETHYLSILOXANE), 200(R) FLUID [(CH3)3SiO]2Si(CH3)2 CO9816 Dimethylbis(trimethylsiloxy)silane O9816 octamethyl-trisiloxan Silane, dimethylbis(trimethylsiloxy)- POLY(DIMETHYLSILOXANE), 200 FLUID, VISCO SITY 1.0 CST Polydimethylsiloxane, trimethylsiloxy terminated, 1.0 cSt. Methylpolysiloxane n(=:)1 1,1,1,3,3,5,5,5-Octamethylpentanetrisiloxane Octamethylpentanetrisiloxane Octamethyltrisiloxane,98% FRD 20 KF 96A1cs KF 96L1.0 PentaMethyl(triMethylsiloxy)disiloxane PentaMethyl(triMethylsilyloxy)disiloxane Trisiloxane,1,1,1,3,3,5,5,5-octaMethyl- Poly(dimethylsiloxane) viscosity 1.0 cSt (25 C) Octamethyltrisiloxane Liquid Octamethyltrisiloxane> METHYLPOLYSILOXANE OCTAMETHYLTRISILOXANE 1,1,1,3,3,5,5,5-Octamethyltrisiloxane TRISILOXANE Trisiloxane, octamethyl- Octamethyltrisiloxane IOTA 201-1 107-51-7 CH33SiOSiCH32OnSiCH33 C8H24O2Si3 Si-O Compounds Siloxanes Si (Classes of Silicon Compounds) Organosilicon Organometallic Reagents Organometallic Reagents Organosilicon Intermediates & Fine Chemicals Pharmaceuticals Chemical Synthesis Materials Science Organometallic Reagents Polymer Science Polysiloxanes Silicones Organics Si (Classes of Silicon Compounds) Siloxanes Si-O Compounds