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Merck
CN

481939

Poly(dimethylsiloxane), hydroxy terminated

viscosity ~25 cSt 

Synonym(s):

PDMS

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About This Item

CAS Number:
UNSPSC Code:
12162002
PubChem Substance ID:
NACRES:
NA.23
MDL number:
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Product Name

Poly(dimethylsiloxane), hydroxy terminated, viscosity ~25 cSt 

InChI

1S/C2H8O2Si/c1-5(2,3)4/h3-4H,1-2H3

InChI key

XCLIHDJZGPCUBT-UHFFFAOYSA-N

SMILES string

C[Si](C)(O)O

mol wt

average Mn ~550

refractive index

n20/D 1.405

viscosity

~25 cSt

bp

182 °C

density

0.95 g/mL at 25 °C

Quality Level

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Application

PDMS can be used as a precursor in the synthesis of poly(dimethylsiloxane-urethane) elastomers with improved mechanical and thermal properties.

PDMS is a material of choice for ophthalmic applications due to its high mechanical strength, transparency, and oxygen permeability. It can be used as a prepolymer to prepare a glucose permeable interpenetrating network of PDMS and poly (N-isopropyl acrylamide (PNIPAAM). These networks can be used in ophthalmic applications.

PDMS can also be used to synthesize fire and heat-resistant polyurethane-PDMS hybrids. The addition of PDMS provides low flammability and thermal stabilization to polyurethane under pyrolytic conditions.

PDMS is used as an additive to prepare TEOS-based stone protective hybrid crack-free xerogels. The addition of PDMS accelerates the gelling process and helps to achieve effective stone protection.

General description

Polydimethylsiloxane(PDMS) is a silicon-basedorganic polymer that is nontoxic, optically clear, inert, and inflammablematerial. It is widely used in heat-resistant lubricants, fire retardants,medical devices, and cosmetics. Polydimethylsiloxane is hydrophobic,cytocompatible, and viscoelastic which can be used to prepare water-repellentcoatings in the textile industry.

Storage Class

10 - Combustible liquids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)


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L Liu et al.
Biomaterials, 26(3), 233-244 (2004-07-21)
Poly (dimethyl siloxane) (PDMS) has been widely used as a biomaterial in ophthalmic and other applications due to its good compatibility, high mechanical strength, excellent oxygen permeability and transparency. However, for use as an artificial cornea, contact lens and in

Articles

Self-healing soft electronic materials enable autonomous repair, reducing waste and costs in electronic devices.

Related Content

We offer PDMS surface modification kit which allows for durable hydrophilization of various polydimethylsiloxane (PDMS) surfaces.

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