Project | Indicator | ||
GB17203-1998 | USP35 | FCC | |
Content (dry basis) % | 98.0-100.5 | 97.5-100.5 | 97.5-100.5 |
Loss on drying % | 10.0-13.3 | 10.0-13.3 | 10.0-14.0 |
Hydrochloric acid insoluble matter ≤% |
0.2 | 0.2 | --- |
Heavy metal (Pb meter) ≤% | 0.002 | 0.002 | |
Arsenic (As) ≤ | 0.00% | 3ppm | |
Lead (Pb) ≤% | 0.0005 | 0.001 | 0.0002 |
Fluoride (F) ≤% | 0.003 | 0.003 | 0.003 |
Solution clarity | qualified | --- | --- |