YAKUGAKU ZASSHI
Online ISSN : 1347-5231
Print ISSN : 0031-6903
ISSN-L : 0031-6903
示差熱分析の応用に関する研究 (第2報)
有機薬品の同質多型の研究に示差熱分析の応用
井上 正敏斎藤 隆子
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ジャーナル フリー

1961 年 81 巻 4 号 p. 615-618

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Differential thermal analysis was carried out on sulfanilamide, sulfathiazole, bromovalerylurea, and bromodiethylacetylurea, and thermal abnormality was found in all these compounds by transition of crystal form. It was also found that bromodiethylacetylurea has a γ-form, besides α- and β-forms, which is labile at a high temperature. The γ-form is stable at above ca. 90° and this was also confirmed by powder X-ray method at the time of heating.

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