|
Appearance |
White flakes |
| (KOH) Assay % | ≥ 90.0 |
| (K 2 CO 3 ) Carbonate (as K 2 CO 3 ) % | ≤ 0.5 |
| Chlorides(asCl) % | ≤ 0.005 |
| Sulfates (as SO 4 ) % | ≤ 0.002 |
| Phosphate (as PO 4 ) % | ≤ 0.002 |
| Nitrate (as N) % | ≤ 0.0005 |
| Silicate (as SiO 3 ) % | ≤ 0.01 |
| (Fe) % | ≤ 0.0002 |
| (Na) % | ≤ 0.5 |
| (Al) % | ≤ 0.001 |
| (Ca) % | ≤ 0.002 |
| (Ni) % | ≤ 0.0005 |
| Heavy metal (as Pb) % | ≤ 0.001 |