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43769 Polydimethylsiloxane, hydroxy terminated, M.W. 4200

CAS Number
70131-67-8
Synonyms

Stock No. Size Price ($) Quantity Availability
43769-AD 50ml 20.50
43769-AK 250ml 46.30
43769-K2 1L 147.00
43769-K4 2.5L 342.00
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Polydimethylsiloxane, hydroxy terminated, M.W. 4200

MDL
MFCD01325012

Chemical Properties

Formula
HO[-Si(CH3)2O-]nH
Form
Liquid
Density
0.97
Storage & Sensitivity
Ambient temperatures.
Solubility
Soluble in carbon tetrachloride, benzene, chloroform, diethyl ether, toluene and other organic solvents. Insoluble in water and ethanol.

Applications

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.

Notes

It is nonbiodegradable.

Literature References

Choia, T.; Weksler, J.; Padsalgikar, A.; Runt, J. Influence of soft segment composition on phase-separated microstructure of polydimethylsiloxane-based segmented polyurethane copolymers. Polymer 2009, 50(10), 2320-2327.

Hwang, H. D.; Kim, H. J. Enhanced thermal and surface properties of waterborne UV-curable polycarbonate-based polyurethane (meth)acrylate dispersion by incorporation of polydimethylsiloxane. React. Funct. Polym. 2011, 71 (6), 655-665.

Other References

Harmonized Tariff Code
3910.00
TSCA
Yes

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