| ≥1 piece |
Conform with the standard of FCC IV
| Appearance | White Granular or powder | ||||
| Assay(C 6 H 7 O 2 K) | 99.0%-101.0% | ||||
| Acidity or Alkalinity | ≤ 1.0% | ||||
| (as C 6 H 8 O 2 or K 2 CO 3 ) | |||||
| Heavy Metal(as Pb) | ≤ 10 ppm | ||||
| Arsenic(as As) | ≤ 2 ppm | ||||
| Mercury(as Hg) | ≤1 ppm | ||||
| Loss on drying (105°C 3 hours) | ≤ 1.0% | ||||
| Aldehydes(as HCHO) | ≤ 0.1% | ||||
| Melting point | 133-135°C | ||||
| Lead | ≤ 5ppm | ||||
| Clarify | Conform |