By titanium dioxide production sulphuric acid is needed as an inlet raw material. Sulphuric acid is produced for internal use and for the market.
| Characteristic | Value of characteristic | Control method | Comment | |
| H2SO4 ( % ) | 96 – 98 | Internal method | Depends of season (W/S) potentiometric titration |
|
| Fe ( mg/l ) | max. 75 | Internal method | Spectrofotometric | |
| Residue on Ignition ( mg/l ) | max. 550 | Internal method | gravimetric | |
| Permanganate index KMnO4 ( mg/l ) |
max. 80 | Internal method | Volumetric | |
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Other concentrations of sulphuric acid
