Ascorbic Acid Reference Standard (Control 831) of the National Institute of Hygienic Sciences
Tokunaga, H.; Kimura, T.; Yamaha, T.
Eisei Shikenjo Hokoku. Bulletin of National Institute of Hygienic Sciences 1985(103): 112-113
1985
ISSN/ISBN: 0077-4715 PMID: 3830291 Document Number: 257782
Ascorbic acid was tested for the preparation of a "Ascorbic Acid Reference Standard". Analytical data obtained were as follows; loss on drying: 0.00%, optical rotation: [.alpha.]D20 = +21.2.degree., melting point: 189.6 .apprx. 190.8.degree. C (decomposition), infrared spectrum: same as the Ascorbic Acid Reference Standard (control 811), and assay: 100.7% by iodometry, 100.2% by 2,6-dichlorophenol indophenol method. This material was authorized as the Japanese Pharmacopoeia Standard.
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