Silver dichromate

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Silver dichromate
CAS number 7784-02-3
Jmol-3D images Image 1
Molecular formula Ag2Cr2O7
Molar mass 431.76 g/mol
Appearance ruby red powder
Density 4.77 g/cm3
Solubility in water Ksp = 2.0×10−7
Except where noted otherwise, data are given for materials in their standard state (at 25 °C (77 °F), 100 kPa)
Infobox references

Silver dichromate is a chemical compound with the formula Ag2Cr2O7. It is insoluble in water and decomposes when treated with hot water.


K2Cr2O7 + 2 AgNO3 → Ag2Cr2O7 + 2 KNO3


Related complexes are used as oxidants in organic chemistry.[1] For instance, tetrakis(pyridine)silver dichromate, [Ag2(py)4]2+[Cr2O7]2-, is used to convert benzylic and allylic alcohols to corresponding carbonyl compounds.[2]


  1. ^ Firouzabadi, H.; Seddighi, M.; Ahmadi, Z. Arab; Sardarian, A. R. (1989). "Selective Oxidative Cleavage of Benzylic Carbon-Nitrogen Double Bonds Under Non-Aqueous Condition with Tetrakis(pyridine)-Silver Dichromate [(Py)2Ag]2Cr2O7". Synthetic Communications 19 (19): 3385. doi:10.1080/00397918908052745. 
  2. ^ Firouzabadi, H.; Sardarian, A.; Gharibi, H. (1984). "Tetrakis (Pyridine)silver Dichromate Py4Ag2Cr207 - A Mild and Efficient Reagent for the Conversion of Benzylic and Allylic Alcohols to Their Corresponding Carbonyl Compounds". Synthetic Communications 14: 89. doi:10.1080/00397918408060869.