This paper is a report drawn up by Wurtz on a memoir of Rosenstiehl on the coloring matters of the madder root. From this root five separate coloring subst...
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https://www.riss.kr/link?id=O132651182
1883년
eng
학술저널
PHP / Scholarly Journals / Feature
365 [※수록면이 p5 이하이면, Review, Columns, Editor's Note, Abstract 등일 경우가 있습니다.]
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다운로드다국어 초록 (Multilingual Abstract)
This paper is a report drawn up by Wurtz on a memoir of Rosenstiehl on the coloring matters of the madder root. From this root five separate coloring subst...
This paper is a report drawn up by Wurtz on a memoir of Rosenstiehl on the coloring matters of the madder root. From this root five separate coloring substances can be extracted: alizarin, purpurin, madder-orange, pseudopurpurin, and purpuroxanthin. The researches of Graebe and Liebermann have fixed the constitution of the two former, whilst Rosenstiehl has studied more especially the three latter substances. He has shown that purpuroxanthin is isomeric with alizarin, and can be converted into purpurin by fusion with potash; and inversely purpurin can be reconverted into purpuroxanthin by the action of reducing agents, but if the action be prolonged, hydro-purpuroxanthin is formed.
COMPARISON OF GALENICAL PREPARATIONS OF THE UNITED STATES AND GERMAN PHARMACOPOEIAS.
ON THE QUALITY OF COMMERCIAL IODIDE OF POTASSIUM.