Kollicoat SR 30 D is miscible with water in any ratio while retaining its milky-white appearance. Mixing the product with ethanol or isopropyl alcohol in a 1 : 5 ratio produces a slightly turbid and somewhat viscous solution; a solution in acetone is more turbid. When organic solvents are added, the polymer precipitates at first, but then dissolves when urther solvent is added. Kollicoat SR 30 D is insoluble in dilute alkaline or acidic solutions.Kollicoat SR 30 D is used mainly for the manufacture of sustained-release dosage
forms. Very effective control of drug release is achieved by coating pellets, granules
and crystals.
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