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Ferric nitrate, is the chemical compound with the formula Fe(NO3)3. Since it is deliquescent, it is commonly found in its nonahydrate form Fe(NO3)3·9H2O in which it forms colourless to pale violet crystals.
F 1325 (OTTO) Ferric nitrate, 98% Cas 7782-61-8 - used by jewelers and metalsmiths to etch silver and silver alloys.