English 
Description
| Chemical Name | Ammonium Dichromate |
| Chemical Grade | AR |
| Chemical Formula | H₈CR₂N₂O₇ |
| Chemical Weight | 252.06 g/mol |
| CAS No | 7789-09-5 |
| Appearance | Orange Red crystals or powder |
| Melting Point | Melting point/range: 170 °C – dec. |
| Assay | min. 99.5% |
| Chloride (CI) | < 0.005% |
| Iron (Fe) | < 0.005% |
| Sulphate (SO4) | < 0.01% |
| Water Insoluble Matter | < 0.005% |
Key Uses
- Volcano demonstrations: Ammonium Dichromate is famous for educational “chemical volcano” experiments, where heat triggers a spectacular, self-sustaining decomposition.
- Pyrotechnic arts: Functions as an effective oxidizing agent and colorant in specialized fireworks and smoke-generating blends.
- Imaging history: Served historically as a light-sensitive colloid hardener for printing plates and early photographic techniques.
- Textile and leather processing: Operates as a reliable mordant and fixing agent to bond dyes to fabrics and process animal hides.
- Chemical synthesis: Utilized as a strong oxidizing agent and industrial catalyst to transform specific organic compounds.
- Electronics manufacturing: Employed in the vintage production of phosphor screens for traditional television picture tubes.
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