Description: Caustic soda Other names Sodium Hydroxide Formula NaOH CAS NO. 1310-73-2 EINECS NO. 215-185-5 UN 1823 CLASS 8 Appearance white Caustic soda Flakes or pearls Purity 96%/98.5%/99% Packing 25kg pp+pe bags Application Basic chemical material,used as high pure reagents.Widely used in chemical,metallurgy,paper making,oil,textile and daily use chemical industry.