第六版食品添加物公定書ソルビン酸カリウム定量法に規定されている有害試薬の変更に関する検討
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概要
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Benzene, a harmful solvent, was prescribed in the Japanese standards of food additives 6th edition (JSFA VI) as the solvent for indicator for the nonaqueous titration of potassium sorbate. It is better that the benzene is changed to a slightly noxious solvent. In this paper, we carried out two cases of the titrimetric analysis of potassium sorbate; in the case using the benzene as the solvent for indicator and in the case using the acetic acid for nonaqueous titration as that, according to the method in JSFA VI, to make clear whether the benzene is changeable to a slightly noxiuos solvent, acetic acid, or not. The results were shown in Table 1. No significant differences were observed between both titration results, suggesting the benzene is changeable to the acetic acid for nonaqueous titration.
- 1998-06-30