Compressible Sugar
» Compressible Sugar, previously dried at 105 for 4 hours, contains not less than 95.0 percent and not more than 98.0 percent of sucrose (C12H22O11). It may contain starch, malto-dextrin, or invert sugar, and may contain a suitable lubricant.
Packaging and storage— Preserve in well-closed containers.
Identification— The specific rotation of the uninverted solution obtained in the Assay is not less than 62.6, and the acid-inverted solution obtained in the Assay is levorotatory.
Microbial enumeration tests 61 and Tests for specified microorganisms 62 It meets the requirements of the tests for the absence of Salmonella species and Escherichia coli.
Loss on drying 731 Dry it at 105 for 4 hours: it loses not more than 1.0% of its weight.
Residue on ignition 281: not more than 0.1%.
Chloride, Sulfate, Calcium, and Heavy metals— Transfer about 20 g, accurately weighed, to a 100-mL volumetric flask, add 80 mL of water, shake to dissolve the sucrose, then add water to volume, and mix. Separate the solubilized sucrose from any insoluble matter by filtration until the filtrate is sparkling clear, and use the freshly prepared, clear filtrate for the following tests.
Chloride 221 A 10-mL portion shows no more chloride than corresponds to 0.40 mL of 0.020 N hydrochloric acid (0.014%).
Sulfate 221 A 25-mL portion shows no more sulfate than corresponds to 0.50 mL of 0.020 N sulfuric acid (0.010%).
Calcium 191 To a 5-mL portion add 1 mL of ammonium oxalate TS: the solution remains clear for not less than 1 minute.
Heavy metals 231 To a 20-mL portion add 4 mL of water and 1 mL of 0.1 N hydrochloric acid: the limit is 5 ppm.
Assay— Transfer 26.0 g of Compressible Sugar, previously dried and accurately weighed, to a 100-mL volumetric flask, add about 0.3 mL of a saturated aqueous solution of lead acetate, shake with about 90 mL of water, dilute with water to volume, and mix. Distribute evenly on the surface of a sheet of medium-fast filter paper about 8 g of chromatographic siliceous earth suitable for column partition chromatography (see under Reagents in the section Reagents, Indicators, and Solutions), and filter the solution, with the aid of vacuum, discarding the first 20 mL of the filtrate. Pipet 25 mL of the subsequent clear filtrate into each of two 50-mL volumetric flasks. Slowly add 6 mL of dilute hydrochloric acid (1 in 2) to one flask while rotating it, dilute with water nearly to volume, and mix. Place the flask in a water bath maintained at a temperature of 60, continuously shake the flask in the bath for about 3 minutes, and allow the flask to remain in the bath for a total of 10 minutes. Immediately cool to 20 by plunging the flask into a cold bath, dilute with water to volume at 20, and mix. Cool the contents of the second flask to 20, dilute with water to volume at 20, and mix. Maintain both flasks at a temperature of 20 for 30 minutes. Determine the specific rotation of each solution at 20 as directed under Optical Rotation 781. Calculate the percentage of C12H22O11 taken by the formula:
100(o i) / 88.3
in which o and i are the specific rotations of the uninverted and acid-inverted solutions, respectively.
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Topic/Question Contact Expert Committee
Monograph Robert H. Lafaver, B.A.
(EM105) Excipient Monographs 1
61 Radhakrishna S Tirumalai, Ph.D.
Senior Scientist
(MSA05) Microbiology and Sterility Assurance
62 Radhakrishna S Tirumalai, Ph.D.
Senior Scientist
(MSA05) Microbiology and Sterility Assurance
USP32–NF27 Page 1364
Pharmacopeial Forum: Volume No. 31(4) Page 1147
Chromatographic Column—
Chromatographic columns text is not derived from, and not part of, USP 32 or NF 27.