CH617169A5 - Process for separating a mixture of 1,5- and 1,8-dihydroxy- anthraquinone and for removing impurities from 1,5- or 1,8-dihydroxy- anthraquinone - Google Patents

Process for separating a mixture of 1,5- and 1,8-dihydroxy- anthraquinone and for removing impurities from 1,5- or 1,8-dihydroxy- anthraquinone Download PDF

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Publication number
CH617169A5
CH617169A5 CH1661974A CH1661974A CH617169A5 CH 617169 A5 CH617169 A5 CH 617169A5 CH 1661974 A CH1661974 A CH 1661974A CH 1661974 A CH1661974 A CH 1661974A CH 617169 A5 CH617169 A5 CH 617169A5
Authority
CH
Switzerland
Prior art keywords
dihydroxyanthraquinone
alkali metal
metal hydroxide
mixture
filtration
Prior art date
Application number
CH1661974A
Other languages
German (de)
English (en)
Inventor
Mitsuru Kurosawa
Seiji Serizawa
Original Assignee
Nippon Kayaku Kk
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nippon Kayaku Kk filed Critical Nippon Kayaku Kk
Publication of CH617169A5 publication Critical patent/CH617169A5/de

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07CACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C46/00Preparation of quinones
    • C07C46/10Separation; Purification; Stabilisation; Use of additives

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
CH1661974A 1973-12-14 1974-12-13 Process for separating a mixture of 1,5- and 1,8-dihydroxy- anthraquinone and for removing impurities from 1,5- or 1,8-dihydroxy- anthraquinone CH617169A5 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13869273A JPS5637973B2 (enrdf_load_stackoverflow) 1973-12-14 1973-12-14

Publications (1)

Publication Number Publication Date
CH617169A5 true CH617169A5 (en) 1980-05-14

Family

ID=15227873

Family Applications (1)

Application Number Title Priority Date Filing Date
CH1661974A CH617169A5 (en) 1973-12-14 1974-12-13 Process for separating a mixture of 1,5- and 1,8-dihydroxy- anthraquinone and for removing impurities from 1,5- or 1,8-dihydroxy- anthraquinone

Country Status (3)

Country Link
JP (1) JPS5637973B2 (enrdf_load_stackoverflow)
CH (1) CH617169A5 (enrdf_load_stackoverflow)
DE (1) DE2458922A1 (enrdf_load_stackoverflow)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60136533A (ja) * 1983-12-23 1985-07-20 Mitsui Toatsu Chem Inc 2,6−ジオキシアントラキノンの精製方法

Also Published As

Publication number Publication date
JPS5637973B2 (enrdf_load_stackoverflow) 1981-09-03
DE2458922A1 (de) 1975-06-26
JPS5089357A (enrdf_load_stackoverflow) 1975-07-17

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