Name of index | GB14889-94 | BP2009 | FCC-V | USP32 |
Appearance | White or light yellow crystal or powder | White or light yellow crystal or powder | White or light yellow crystal or powder | White or light yellow crystal or powder |
Content(K3C6H5O7) ≥% | 99.0 | 99.0-101.0 | 99.0-100.5 | 99.0-100.5 |
Heavy metal(AsPb) ≤% | 0.001 | 0.001 | - | 0.001 |
AS ≤% | 0.0003 | 0.0001 | - | 0.0001 |
Loss on drying % | 3.0-6.0 | - | 3.0-6.0 | 3.0-6.0 |
Lead | - | - | 0.0002 | - |
Moisture% | - | 4.0-7.0 | - | |
Cl ≤% | - | 0.005 | - | |
Sulphate Salt≤% | - | 0.015 | - | |
Qxalates ≤% | - | 0.03 | - | |
Sodium ≤% | - | 0.3 | - | |
Alkalinity | Pass test | Pass test | Pass test | Pass test |
Readily Carbonisable Substances | - | Pass test | - | - |
Transparenly and color of sample | - | Pass test | - | - |
Pyrogens | - | - | - | - |