有機酸クロム(III)水溶液及びその製造方法

Title:

有機酸クロム(III)水溶液及びその製造方法

Document Type and Number:

Japanese Patent JP4993959

Kind Code:

B2

Abstract:

An aqueous solution containing an organic acid chromium (III) salt represented by general formula: Cr m (A x ) n , wherein A represents a residue left after proton removal from an organic acid; x represents a charge of A; and m and n represent integers satisfying equation 3m+xn=0, is disclosed. The aqueous solution contains the organic acid chromium (III) salt in a concentration of 6% by weight or higher in terms of Cr m (A x ) n , has impurity ion concentrations of Na¤30 ppm, Fe¤20 ppm, Cl¤0.001%, SO 4 ¤0.03%, and NO 3 ¤20 ppm per 20 wt% concentration of Cr m (A x ) n , and is substantially free from chromium (VI).

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Inventors:

Tomohiro Banda
Shogo Koike
Takashi Hara

Application Number:

JP2006189817A

Publication Date:

August 08, 2012

Filing Date:

July 10, 2006

Export Citation:

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Assignee:

Nippon Chemical Industry Co., Ltd.

International Classes:

C07C53/10; C07C51/41; C07C55/06; C07C55/08; C07C55/24; C07C57/145; C07C59/06; C07C59/08; C07C59/245; C07C59/255; C07C59/265

Domestic Patent References:

JP2002523391A

Attorney, Agent or Firm:

Osamu Hatori
Yoshiyuki Matsushima

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