- ▸ Agriculture: Copper micronutrient fertilizer and registered algaecide/fungicide
- ▸ Electroplating: Copper source in plating and electroforming baths
- ▸ Etching: Etchant for metals and printed circuits
- ▸ Water treatment: Algae control in ponds and reservoirs
- ▸ Pigment & intermediate: Copper colorant and chemical feedstock
A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.
Transport classification per the UN Model Regulations / 49 CFR 172.101 Hazardous Materials Table. Confirm against the grade-specific SDS (Section 14) before shipping.
Copper(II) sulfate pentahydrate (CuSO4-5H2O, CAS 7758-99-8), blue triclinic crystals. Industry references record use as a soil amendment/fertilizer micronutrient, a chelating agent, an etching and plating agent, a pigment, and a registered algaecide/fungicide. Supplied as crystals or powder.
Frequently Asked Questions
What is copper sulfate pentahydrate used for?
Copper(II) sulfate pentahydrate (CuSO4·5H2O, CAS 7758-99-8) is used as a soil-amendment/fertilizer micronutrient, a registered algaecide/fungicide, a chelating agent, an etchant for metals and printed circuits, a copper source in plating and electroforming baths, and a pigment and chemical feedstock.
What is the difference between copper sulfate and copper sulfate pentahydrate?
Anhydrous copper sulfate (CuSO4) is a white-to-grey powder, while copper sulfate pentahydrate (CuSO4·5H2O) carries five waters of crystallization and forms blue triclinic crystals. The pentahydrate is the common commercial blue crystal/powder form.
What is CuSO4·5H2O called?
CuSO4·5H2O is copper(II) sulfate pentahydrate, historically known as blue vitriol or bluestone. CAS 7758-99-8, classified under HS 2833.25 (sulfates of copper).
How is copper sulfate pentahydrate shipped under DOT?
It is assigned UN 3288 (toxic solid, inorganic). It must be packaged, labeled, and shipped per the applicable hazmat regulations for your mode of transport. Always work from the current SDS and consult your carrier for documentation.
What grades and packaging is bulk copper sulfate pentahydrate available in?
It is supplied as crystals or powder in bags, drums, and bulk, with crystal size grades varying by application (agriculture, plating, water treatment). Request a CoA and SDS with your quote to confirm copper content and crystal grade.