[The Ascorbic Acid Reference Standard (Control 931) of the National Institute of Health Sciences].
Raw ascorbic acid material was tested for preparation of the "Ascorbic Acid Reference Standard (Control 931)". Analytical data obtained were as follows: infrared spectrum, the same as that of the JP Ascorbic Acid Reference Standard; optical rotation -alpha-20D, + 21.4 degrees; melting point, 190.3 degrees C (decomposition); loss on drying, 0.02%; assay result, 100.1% by iodometry. Based on the above findings, the raw material was authorized as the JP Ascorbic Acid Reference Standard (Control 931).
Kitajima
A
A
Yoshii
K
K
Komatsu
H
H
Ishimitsu
S
S
Okada
S
S
D001205:Ascorbic Acid / Q000032:analysis / Q000592:standards*; D055598:Chemical Phenomena; D002627:Chemistry, Physical; D006077:Government Agencies; D007564:Japan; D010602:Pharmacopoeias as Topic / Q000592:standards
D001205:Ascorbic Acid