Molecular formula：(NH4)2Cr2o7Molecular weight：252.06Properties and features：it is salmon pink crystallization,toxic, soluble in water, Insoluble in alcohol.It is a strong oxidant.Quality standard
| Iltem Index | Premium grades | First grade |
| content[ (NH4)2Cr2O7)]%≥ | 99 | 98 |
| Insoluble substance in water% ≤ | 0.05 | 0.15 |
| Chloride（CI） %≤ | 1.0 | -- |
Use：As materials of making chromium hemitrioxide.potassium chromate, match, chemical reagent, Used in passivation of rolled steel,etc.
Package：Plastic weaved bag, lined with PE bag, and 25KG weight.
