Specification
Characteristic | Requirement for | |
Grade I | Grade II | |
Sodium Chloride (as Nacl)Percent by mass, min. | 99.5 | 98.5 |
Matter insoluble in water percent by mass, max. | 0.05 | 0.2 |
Calcium salts (as Ca) percent by mass, max. | 0.03 | 0.2 |
Magnesium salts (as Mg) percent by mass, max. | 0.01 | 0.10 |
Sulphate (as SO4) percent by mass, max. | 0.2 | 0.6 |
Iron compound (as Fe) ppm max. | 10.0 | 20.0 |