Detail of "12014-56-1"

CAS Number:
12014-56-1
Name:
Cerium hydroxide(Ce(OH)4), (T-4)-
Superlist Name:
Cerium tetrahydroxide
Molecular Structure:
Formula:
CeH₄O₄
Molecular Weight:
208.15
Synonyms:
Ceriumhydroxide (Ce(OH)4) (6CI,7CI,8CI);Ceric hydroxide;Cerium (IV) hydroxide;Cerium tetrahydroxide;CID82798;
EINECS:
234-599-7
Solubility:
insoluble in water and weak acid, soluble in concentrated acid
Appearance:
yellow or brown powder
Hazard Symbols:
Xi
Risk Codes:
36
Safety:
26 Details
particular:
particular

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Method for recycling of chromium etching solutions: Method for recycling of chromium etching solutions. Kakubari, Kiyoshi; Saito, Akinori; Kawamura, Harumi; Ono, Masatoshi (Nihon Kagaku Sangyo Co., Ltd., Japan). Jpn. Kokai Tokkyo Koho JP 2005023373 A2 27 Jan 2005, 6 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: C23F001-46. ICS: B01J020-06; B01J020-34; C02F001-28; C02F001-62. APPLICATION: JP 2003-190477 2 Jul 2003. DOCUMENT TYPE: Patent CA Section: 56 (Nonferrous Metals and Alloys) Section cross-reference(s): 60 Hydroxides of Ce, Zr, and/or Ti are added to cerium ammonium nitrate soln.Several substances with their cas registry numbers 15078-94-1 and 12014-56-1 may be metioned in this study. contg. Cr for adsorption of Cr to the hydroxides and then filtered for removal of the Cr-adsorbed hydroxides. Thus obtained Cr-adsorbed hydroxides are treated with an alk. soln. for recovery of Cr as alkali metal chromate and for reuse of the hydroxides in the said process. Ce remaining in the treated etchant is recovered as cerium hydroxide or cerium carbonate by reaction of the cerium ammonium nitrate with ammonia or ammonium carbonate. Cr etchants obtained by the process are also claimed. Used Cr etchants are treated for effective recycling of their components. .