1,Character: Sodium hydroxide is achromatic and transparent solution, its proportion is 1.291. The solid sodium hydroxide is white solid or pieces, its proportion is 2.13, show alkali character, having strong causticity to skin, weaves and sheet. In the air it will absorb the carbon dioxide and change into sodium carbonate. The solid sodium hydroxide has strong moisture absorption character, so it must stored protecting against the tide and isolating air. 2,Usages: Sodium hydroxide is an important chemical materials, mainly using in paper making , synthetic fiber, textile, dyestuff, commodity, petroleum and petrochemistry industry, organic compound, pharmacy, chemical fertilizer, plastic and water disposal industries. Along with the continuously development of national industry, every walk of life requires higher quality of sodium hydroxide, such as: synthetic fiber, textile, dyestuff, organic compound and fine chemistry all need the high pure sodium hydroxide containing few impurity ---ion-film sodium hydroxide. The subsidiary company of our group company produces the ion-film sodium hydroxide, adopting national most advanced production technology, containing lowest impurity, and which entirely satisfy the demand of every walk of life. 3,Products quality: The ion-film Sodium hydroxide accords with the standard of GB/T11199-89. Packing : 25kgs.