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Poly(dimethylsiloxane)

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Poly(dimethylsiloxane) Basic information

Product Name:
Poly(dimethylsiloxane)
CAS:
9016-00-6
MF:
C5H6Si
MW:
94.18664
EINECS:
618-493-1
Mol File:
9016-00-6.mol
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Poly(dimethylsiloxane) Chemical Properties

Melting point:
-35°C
Boiling point:
155-220°C
Density 
0.971
vapor pressure 
5 mm Hg ( 20 °C)
refractive index 
1.4035
Flash point:
63°C
form 
Viscous Liquid
Specific Gravity
0.918
color 
Colorless
Water Solubility 
INSOLUBLE
Stability:
Stable. Flammable or combustible. Flammability depends upon extent of polymerization. Incompatible with strong oxidizing agents.
EPA Substance Registry System
Poly[oxy(dimethylsilylene)] (9016-00-6)
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Safety Information

Risk Statements 
36/37/38
Safety Statements 
24/25
RIDADR 
1993
WGK Germany 
2
RTECS 
TQ2690000
TSCA 
Yes
HazardClass 
3
HS Code 
39100000
Hazardous Substances Data
9016-00-6(Hazardous Substances Data)

MSDS

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Poly(dimethylsiloxane) Usage And Synthesis

Chemical Properties

colourless liquid with a viscosity which

Uses

Antiflatulent.

Uses

Silicones are polymeric materials having silicon and oxygen on their composition. They are largely inert compounds usually heat-resistant, nonstick, and rubberlike. Polydimethylsiloxane (PDMS, molecular formula (C2H6OSi)n, density 965 kg/m3, boiling point: < 200℃, shear modulus between 100 kPa and 3 MPa, loss tangent less than 0.001) is a viscoelastic polymer (elastomer). PDMS is widely used in microfluidic technology thanks to some of its unique properties: it is low cost, nontoxic, chemically resistant, and stable against humidity and temperature variations. PDMS also presents low interfacial energy, which allows it to avoid chemical interactions with other polymers and solutions in the microfluidic channels. After polymerization and cross-linking, solid PDMS presents hydrophobic surface. A treatment using plasma oxidation is frequently used to alter the surface chemistry by adding silanol (SiOH) groups to the surface terminations and make the surface hydrophilic (wettable). PDMS is usually used as sealant, structural microchannel material or elastomer stamping matrix in soft lithography techniques like microcontact printing and micromolding.

Uses

Poly(dimethylsiloxane) is an antifoaming agent used in fats and oils. It prevents foaming and spattering when oils are heated and prevents foam formation during the manufacture of wine, refined sugar, gelatin, and chewing gum. It is also termed methyl polysilicone and methyl silicone.

brand name

Gas-X (Novartis); Mylanta Gas Relief (Johnson & Johnson-Merck Consumer); Mylicon Infant’s Drops (Johnson & Johnson-Merck Consumer); Sentry Simethicone (Witco); Sentry Simethicone Emulsion (Witco).

General Description

Colorless odorless liquid, Floats on water.

Air & Water Reactions

Insoluble in water.

Reactivity Profile

Poly(dimethylsiloxane) is a weak reducing agent.

Health Hazard

Contact of liquid with eyes may cause temporary discomfort. Does not irritate skin. Harmless when ingested.

Pharmaceutical Applications

Simethicone is a mixture of poly(dimethyl siloxane) and silica gel, known for their antifoaming properties. It is an orally administered suspension containing polysiloxanes and silicon dioxide. It is an antifoaming agent and is used to reduce bloating by decreasing the surface tension in bubbles. Excessive formation of gas bubbles in the stomach and intestines can be painful and can also be of hindrance for any ultrasound examination. Simethicone can be found in antacids and in suspensions given to babies against colic.

Poly(dimethylsiloxane) Preparation Products And Raw materials

Raw materials

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Poly(dimethylsiloxane)SupplierMore

J & K SCIENTIFIC LTD.
Tel:
010-82848833- ;010-82848833-
Email:
jkinfo@jkchemical.com;market6@jkchemical.com
Meryer (Shanghai) Chemical Technology Co., Ltd.
Tel:
21-61259100-
Email:
sh@meryer.com
Alfa Aesar
Tel:
400-610-6006; 021-67582000
Email:
saleschina@alfa-asia.com
Energy Chemical
Tel:
021-58432009
Email:
sales8178@energy-chemical.com
Secco work (Beijing) chemical technology co., LTD
Tel:
010-69755668
Email:
343367102@QQ.COM
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