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Title:
CRYSTALLIZED 1,4-NAPHTHOQUINONE-OR 1,4-NAPHTHOHYDROQUINONE-2-SULFONATE AND ITS PRODUCTION
Document Type and Number:
Japanese Patent JPH0859600
Kind Code:
A
Abstract:

PURPOSE: To obtain sodium or ammonium salt of 1,4-naphthoquinone- or 1,4- naphthohydroquinone-2-sulfonic acid in the form convenient for storage or transport.

CONSTITUTION: This compound is crystallized 1,4-naphthoquinone- or 1,4- naphthohydroquinone-2-sulfonic acid sodium or ammonium salt, being obtained by adding a salting-out agent to an aqueous solution of 1,4-naphthoquinone- or 1,4-naphthohydroquinone-2-sulfonic acid sodium or ammonium salt followed by filtering out the crystal of the above sulfonate deposited.


Inventors:
Sugii, Naoyuki
Yamauchi, Toshiyuki
Nagamura, Yoshiisa
Kanekawa, Eisuke
Application Number:
JP1994000202153
Publication Date:
March 05, 1996
Filing Date:
August 26, 1994
Export Citation:
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Assignee:
JOHOKU KAGAKU KOGYO KK
International Classes:
B01D53/52; B01D53/77; C07C46/10; C07C50/12; C07C309/25; C07C309/43; C09K3/00; (IPC1-7): C07C309/25; B01D53/52; B01D53/77; C07C46/10; C07C50/12; C07C309/43
Attorney, Agent or Firm:
石田 敬 (外3名)