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 |
