Sucrose octaacetate.

§ 21.131 Sucrose octaacetate. (a) Sucrose octaacetate is an organic acetylation product occurring as a white or cream-colored powder having an intensely bitter taste. (b) Free acid (as acetic acid). Maximum percentage 0.15 by weight when determined by the following procedure: Dissolve 1.0 gram of sample in 50 mL of neutralized ethyl alcohol (or S.D.A. No. 3–A, No. 3–C, or No. 30) and titrate with 0.1 N sodium hydroxide using phenolphthalein indicator. Percent acid as acetic acid = mL NaOH used × 0.6 / weight of sample (c) Insoluble matter. 0.30 percent by weight maximum. (d) Melting point. Not less than 78.0 °C. (e) Purity. Sucrose octaacetate 98 percent minimum by weight when determined by the following procedure: Transfer a weighed 1.50 grams sample to a 500 mL Erlenmeyer flask containing 100 mL of neutral ethyl alcohol (or S.D.A. No. 3–A, No. 3–C, or No. 30) and exactly 50.0 mL of 0.5 N sodium hydroxide. Reflux for 1 hour on a steam bath, cool and titrate the excess sodium hydroxide with 0.5 N sulfuric acid using phenolphthalein indicator. Percent sucrose octaacetate = (mL NaOH − mL H 2 SO 4 ) × 4.2412 / weight of sample [T.D. ATF–133, 48 FR 24673, June 2, 1983. Redesignated by T.D. ATF–442, 66 FR 12854, Mar. 1, 2001]