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Polydimethylsiloxane, dihydroxy terminated

Polydimethylsiloxane, dihydroxy terminated structure

Polydimethylsiloxane, dihydroxy terminated 

structure
  • CAS No:

    70131-67-8

  • Formula:

    HOSi

  • Chemical Name:

    Polydimethylsiloxane, dihydroxy terminated

  • Synonyms:

    SILICON PS 347.5;SILANOL TERMINATED POLYDIMETHYLSILOXANE;SILANOL TERMINATED POLYDIMETHYLSILOXANE,18000CS;SILANOL TERMINATED POLYDIMETHYLSILOXANES;PS 347.5;POLYDIMETHYLSILOXANE, DIHYDROXY TERMINATED;POLYDIMETHYLSILOXANE, SILANOL TERMINATED;baysilonc0.7

  • Categories:

    Cosmetic Ingredient  >  Antifoaming

Description

Polydimethylsiloxane, dihydroxy terminated is a non-toxic, optically transparent, inert, flammable silicone-based organic polymer. It is widely used in heat-resistant lubricants, flame retardants, medical devices, and cosmetics. Polydimethylsiloxane is hydrophobic, cytocompatible and viscoelastic and can be used for water-repellent coatings in the textile industry.


Silanol Terminated Polydimethylsiloxane 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.

Polydimethylsiloxane, dihydroxy terminated Basic Attributes

45.09284

92.03000

615-070-3

TSCA listed

Characteristics

20.2

0.00000

Liquid

0.98 g/mL at 25 °C

<-60°C

182 °C

155 °F

n20/D1.406

Soluble in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents. Insoluble in water and ethanol.

2-8°C

2-8°C

Safety Information

NONH for all modes of transport

1

Xi

23-24/25-36-26

VW3157812

Xi

P273, P501

36/37/38

Polydimethylsiloxane, dihydroxy terminated Use and Manufacturing

Widely used in the finishing of synthetic fibers, silk, cotton and other fibers and fabrics


Polydimethylsiloxane is frequently used in a liquid containing 4-5% silica gel, emulsifiers and preservatives. It is employed in applications like contact lenses, medical devices, elastomers, in shampoos, food (antifoaming agent), caulking, lubricants, kinetic sand , and heat-resistant tiles. PDMS is a common surfactant, component of defoamers and as an herbicidal penetran.

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