It can dissolve in water easily, its water solution is alkali and it can make phenolphthalein red.
It’s widely used in a variety of industrial that the normal usage of caustic soda for industry including: chemical processing (40%), pulp and paper manufacturing (17%), water treatment (5%), alumina production (8%), soaps, detergents, textile processing (12%), and miscellaneous (25%).
Inspection Items | First Grade | Qualified Grade |
NaOH ≥% | 99.0 | 96.0 |
Na2CO3 ≤% | 0.90 | 1.4 |
NaCl ≤% | 0.15 | 2.8 |
Fe2O3 ≤% | 0.005 | 0.01 |
Appearance | White Translucent Flake | Qualified |
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