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Simethicone
Simethicone;
 α-(Trimethylsilyl)-ω-methylpoly[oxy(dimethylsilylene)], mixture with silicon dioxide [8050-81-5]

DEFINITION

Simethicone 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–], and silicon dioxide. It contains NLT 90.5% and NMT 99.0% of polydimethylsiloxane ([–(CH3)2SiO–]n), and NLT 4.0% and NMT 7.0% of silicon dioxide.

USP REFERENCE STANDARDS FOR PURCHASE

USP Polydimethylsiloxane RS
USP Simethicone RS
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