Cupric (Copper) nitrate,Cu(NO3)2, is aninorganic compoundthat forms a bluecrystalline solid.

Simple Patina Solution Mixtures: Cupric Nitrate – 250g-500g per 1 gal distilled water.

Patina Recipe:BASIC GREEN (Semi-transparent finish; Hot process):
– Cupric Nitrate (1 tsp.)
– Clean, potable water (1 pint)
Note: A fresh mixture is needed for each coloring.

Patina Recipe:PURPLE (Transparent finish; Hot process):
– Copper Nitrate (1 tsp.)
– Clean, potable water (1 pint)
– Potassium Ferrocyanide