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Poly(dimethylsiloxane) CAS 9016-00-6


Chemical Name: Poly(dimethylsiloxane)

CAS NO.: 9016-00-6

Molecular Formula: C5H6Si

Molecular Weight: 94.18664

Appearance: A colorless viscous liquid

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Poly(dimethylsiloxane) Quick Details

Chemical Name: Poly(dimethylsiloxane)

CAS NO.: 9016-00-6

Molecular Formula: C5H6Si

Molecular Weight: 94.18664

Appearance: A colorless viscous liquid

Poly(dimethylsiloxane) Typical Properties

Test ItemsSpecificationTest Results
Color And AppearanceColorless liquid Conform
Density0.850 ~ 1.0500.950
Densities≤ 0.05%0.0011%
Refractive Index1.4005-1.40451.4041
LODNot more than 2.0%0.8%
Heavy MetalsNo more than 0.0005%Passed
Arsenic SaltNo more than 0.0002%Passed
ConclusionTesting Results As Standard of In house

Poly(dimethylsiloxane) Usage

1. Silicones are polymeric materials having silicon and oxygen on their composition. They are largely inert compounds usually heat-resistant, nonstick, and rubberlike. 

2. 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). 

3. 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.

4. 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). 

5. PDMS is usually used as sealant, structural microchannel material or elastomer stamping matrix in soft lithography techniques like microcontact printing and micromolding.

6. 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.

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