• British Pharmacopoeia Volume V
  • Appendices
  • Appendix I A. General Reagents

Poly(dimethyl)siloxane
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Poly(dimethyl)siloxane Silicone gum rubber (methyl)

Gas chromatographic reagent grade of commerce.

Organosilicon polymer with the appearance of a semi-liquid, colourless gum. The infrared absorption spectrum, Appendix II A, obtained by applying the reagent, if necessary dispersed in a few drops of carbon tetrachloride, to a sodium chloride plate does not show absorption at 3053 cm–1, corresponding to vinyl groups.