sodium polyacrylate
A superabsorbent polymer used in diapers, water-retaining materials, and as a food additive.
Sodium polyacrylate is used in disposable diapers.
Sodium polyacrylate is a polymer compound with high water absorbency.
From English 'polyacrylic acid sodium salt', adapted into Japanese as ポリアクリル酸ナトリウム.