| Item | Property | Units | Test Result | Normal Range (Grade A) | Test Method |
| 1 | Purity as NaOH | Wt % | 99 | 98min | JlSk 1200 |
| 2 | Carbonates as Na2C03 | Wt % | 0.5> | 1.0 max | JlSk 1200 |
| 3 | Chlorides NaC1 | Wt % | 0.02> | 0.06 max | ASTM E 291 |
| 4 | Sulfates as Na2S04 | Wt % | 0.003> | 0.01 max | ASTM E 291 |
| 5 | Silicates as Si02 | Wt % | 0.003> | 0.02 max | IS 252 |
| 6 | Matter insoluble in water | Wt % | 0.03> | 0.1 max | BSI 6075 |
| 7 | Irons Fe203 | wt-ppm | 1.0> | 20 max | ASTM E 291 |
| 8 | NaC103 | wt-ppm | 6.6> | 20 max | ASTM E 1778 |