Sodium hydroxide has many USES.Used for papermaking, soap, dye, rayon, aluminum, petroleum refining, cotton finishing, coal tarproduct purification, alkaline cleaning agent in water treatment and food processing, wood processing and machinery industry.The details are as follows:

Caustic soda	Flakes 96%	Flakes 99%	Solid 99%	Pearls 96%	Pearls 99%
NaOH	96.68% Min	99.28% Min	99.30% Min	96.60% Min	99.35% Min
Na2COS	1.2% Max	0.5% Max	0.5%Max	1.5%Max	0.5%Max
NaCl	2.5% Max	0.03% Max	0.03% Max	2.1% Max	0.03% Max
Fe2O3	0.008 Max	0.005 Max	0.005% Max	0.009% Max	0.005% Max