
SODIUM HYDROXIDE 25%
| Appearance | Clear colourless liquid |
| S.G. at 20°C | 1.18 ± 0.01 |
| Sodium Hydroxide as NaOH, % | 25 ± 1 |
| Sodium Carbonate as Na2CO3, % | 0.05 Max. |
| Sodium Chloride as NaCl, % | 0.04 Max. |
| Sodium Sulphate as Na2SO4, ppm | 15.0 Max. |
| Iron as Fe, ppm | 10.0 Max. |
| Iron Oxide as Fe2O3, ppm | 10.0 Max. |
| Fe2 O3 ,ppm | Trace |
| Calcium Oxide as Ca2+, ppm | 3.0 Max. |
| Magnesium Oxide as Mg2+, ppm | < 1 |