| 摘要 |
PROBLEM TO BE SOLVED: To provide a composition comprising a polyhydric alcohol compound having sufficient capability of chelating an iron ion relative to a prior art chelating agent. SOLUTION: The polyhydric alcohol compound is represented by the formula (in the formula, X represents a hydrogen atom, an alkali metal atom, an alkaline earth metal atom, an ammonium salt or an organic ammonium salt, and R represents a 1-12C organic group comprising at least 2 hydroxy groups). COPYRIGHT: (C)2011,JPO&INPIT
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