Colorimetric determination of carboxylic acids with 2-nitrophenylhydrazine hydrochloride.

• 百瀬 勉

抄録

Aliphatic and aromatic acids and 2-nitrophenylhydrazine hydrochloride were coupled in aqueous ethanol with dicyclohexylcarbodiimide as a coupling agent in the presence of pyridine and thiourea. The resultant hydrazide solution was made alkaline to develop a violet color, and heated at 60°to decolorize the brown blank color. This colorimetric method of determination is suitable for aqueous and aqueous ethanol samples of carboxylic acids.

収録刊行物

• ＣＨＥＭＩＣＡＬ　＆　ＰＨＡＲＭＡＣＥＵＴＩＣＡＬ　ＢＵＬＬＥＴＩＮ

  ＣＨＥＭＩＣＡＬ　＆　ＰＨＡＲＭＡＣＥＵＴＩＣＡＬ　ＢＵＬＬＥＴＩＮ 26 (5), 1627-1628, 1978

  公益社団法人 日本薬学会

キーワード

• colorimetry

詳細情報

• CRID: 1390001204168640768
• NII論文ID: 110003623182
• NII書誌ID: AA00602100
• DOI: 10.1248/cpb.26.1627
• ISSN: 13475223
• ISSN: 00092363
• Web Site: http://www.jstage.jst.go.jp/article/cpb1958/26/5/26_5_1627/_pdf
• Web Site: https://search.jamas.or.jp/link/ui/1979071533
• 本文言語コード: en
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可