Item | Standard |
Appearance | White crystals or crystalline powder |
Assay | 99.0 - 101.0% |
Loss on drying | 11.0 - 13.0% |
Clarity and color of Solution | Conforms |
Heavy metal (Pb) | 10 ppm max |
Usage | acidity regulator |
CAS No. | 68-04-2 |
Chemical formula | C6H5O7Na3·2H2O |
Sulfate (SO4) | 150 ppm max |
Chloride (Cl) | 50 ppm max |
Readily carbonisable substances | Conforms |
Alkalinity | Conforms |
Oxalate | 300 ppm max |