Propylene Glycol Alginate, CAS# 9005-37-2, is an organic chemicals manufactured through chemical synthesis, available as White to off-white powder . Propylene Glycol Alginate is widely used as thickeners. It is widely accepted as safe food additive in many countries with E number E405. Foodchem International Corporation has been supplying quality Propylene Glycol Alginate to customers all over the world for over 10 years.