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Dimethicone
Dimethicone;
 α-(Trimethylsilyl)-ω-methylpoly[oxy(dimethylsilylene)] [9006-65-9]

DEFINITION

Dimethicone is a mixture of fully methylated linear siloxane polymers containing repeating units of the formula: [–(CH3)2SiO–] n stabilized with trimethylsiloxy end-blocking units of the formula: [(CH3)3SiO–] wherein n has an average value such that the corresponding nominal viscosity is in a discrete range between 20 and 30,000 centistokes. It contains NLT 97.0% and NMT 103.0% of polydimethylsiloxane ([–(CH3)2SiO–] n ).

USP REFERENCE STANDARDS FOR PURCHASE

USP Polydimethylsiloxane RS
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