To suppress a curing agent paste stored in a sealed state in a packaging container from self-curing over a long period of time, provided are a dental alginate impression material as described below, and a curing agent paste to be used for the dental alginate impression material. The dental alginate impression material includes: a base material paste including as main components: an alginic acid salt (A)； and water (B)； and a curing agent paste including as main components: a gelling reaction agent (C)； a poorly water-soluble organic solvent (D)； and a humectant (E).
