Sulphur.
| Sl. No. | Characteristics | Unit | Requirement | |
| Minimum | Maximum | |||
| 1 | Sulphur, Purity | % by mass | 99.96 | |
| 2 | Humidity | % by mass | 0.02 | |
| 3 | Organic bituminous compounds, |
% by mass | 0.12 | |
| 4 | Ash, % by mass, Max | % by mass | 0.02 | |
| 5 | Acids (as H2SO4) | % by mass | 0.003 | |
| 6 | Selenium | Free | ||
| 7 | Tellurium | Free | ||
| 8 | Arsenic | Free | ||
