Propylene glycol alginate (Propylene glycol alginate, Propane-1 '2-diol alginate, propane-1' 2-diol alginate, E405) gishiri ne na alginic acid dangane da polyatomic barasa propylene glycol.
Yana da sauƙi mai narkewa a cikin ruwa kuma don haka ana samun babban maganin danko.
Ana amfani dashi azaman mai kauri, stabilizer da emulsifier a cikin samar da 'ya'yan itace da abubuwan sha, mai, gaurayawan gasa; a kayan shafawa, a kantin magani, da dai sauransu.