| ITEMS | Specifications | ||
| Tech / Industry Grade | Food Grade | ||
| Purity [K4Fe(CN )6 . 3H2O] % >=</p> | 99.0 | 99.0 | |
| Chloride [ Cl- ] % =< | 0.20 | 0.20 | |
| Water insoluble matter % =< | 0.01 | 0.01 | |
| Moisture % =< | 0.50 | 0.30 | |
| Sodium [ Na+ ] % =< | 0.30 | 0.20 | |
| Hexacyanoferrate (Ⅲ) acid salt %=< | Passed | ||
| Cyanide [ CN- ] % =< | Passed | ||
| Arsenic [ As ] % =< | 0.0001 | ||