Sodium Hydroxide (as NaOH) % by mass |
97.00 Min |
98.45 |
Sodium Carbonate (as Na2CO3) % by mass |
0.40 Max |
0.27 |
Chlorides (as NaCl), % by mass |
0.030 Max |
0.023 |
Sulphates (as Na2SO4) % by mass |
0.030 Max |
0.004 |
Silicates (as SiO2) % by mass |
0.020 Max |
0.004 |
Iron (as Fe) ppm |
20.00 Max |
3.20 |
Insoluble matter in water % by mass |
0.050 Max |
0.004 |
Chlorates & perchlorates (as NaClO3) ppm |
10.00 Max |
0.82 |
Copper (as CU) ppm |
2.00 Max |
0.00 |
Manganese (as Mn) ppm |
1.00 Max |
0.00 |
Mercury as Hg |
0.020 Max |
0.000 |
Sodium Hydroxide as NaOH on Dry basis % |
99.50 Min |
99.68 |