Propylene glycol alginate (Propylene glycol alginate, Propane-1 '2-diol alginate, propane-1' 2-diol alginate, E405) o se masima o le alginic acid e faʻavae i luga ole polyatomic alcohol propylene glycol.
E faigofie ona soluble i le vai ma o lea e maua ai le maualuga-ogatasi fofo.
E faʻaaogaina e avea o se mafiafia, faʻamautu ma emulsifier i le gaosiga o fualaau aina ma mea inu ava malosi, gaʻo, faʻafefiloi tao; i mea teuteu, fale talavai, ma isi.