Cupric sulfate (copper sulfate) in the form of blue, medium sized crystals. Soluble in water and methanol; slightly soluble in ethyl alcohol and glycerin. Toxic by ingestion and a strong irritant so care should be taken in handling.
Cupric sulfate is a commonly used chemical for patination due to its ability to create a greenish-blue patina on copper surfaces.
Used in the following patina formulas:
- No. 5 for Antique Green
- No. 9 for Light Green
- No. 17 for Deep Rust Red
- No 20 for Red – semi-matt (For Copper & Copper Plate)
- No. 22 for Red – Purple Satin (For Cast Bronze)
- No. 23 for Orange Brown (For Cast Bronze)
- No. 25 for Blue Green (For Cast Bronze)
- No. 26 for Golden Yellow (For Cast Bronze)
- No. 29 for Reddish Brown (For Cast Brass)
Cupric sulfate readily forms blue, triclinic crystals.
For shipping, Cupric Sulfate is in hazardous materials Class 9: Miscellaneous Dangerous Substances. It only ships to destinations within the 48 contiguous US states and Canada using Standard Ground • No air deliveries allowed • Customers in Canada should expect additional duties, taxes, and customs clearance service fees due upon delivery.
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