Particulate Water-Absorbing Agent Containing Water-Absorbing Resin asMain Component and Method for Producing The Same

摘要

[Problem] To provide a water absorber which exhibits high gel stability, little scattering in gel stability among particle sizes, and good water absorption characteristics. [Solution] A particulate water absorber which comprises a water-absorbing resin as the main component and a chelating agent and in which the constituent particles comprise particles having particle diameters of less than 300μm and particles having particle diameters of 300 to less than 850μm, each particle diameter being determined by JIS standard sieves, characterized in that: the content of the chelating agent is 0.001 to 5 parts by weight relative to 100 parts by weight of the solid matter of the water-absorbing resin; and the relationship (1) 1.2 < C1/C2 < 4.0 is satisfied.