Perchloric Acid 70%

Gandi Chemical Solutions supplies Perchloric Acid 70% (CAS 7601-90-3) to mines, concentrators and mineral processing plants. Packaging: 40kg. Priced by quotation, with a current safety data sheet on every consignment.

Perchloric acid at 70% concentration is one of the strongest common mineral acids and a potent oxidizer, so it earns a spot on the more tightly controlled end of the GCS range. It’s a clear, colourless liquid that reacts violently with organic material and reducing agents, and it can drive fires or explosions if it contacts the wrong substances. Typical uses include electropolishing, mineral digestion ahead of analysis, and specialised etching. Storage demands dedicated, non-combustible areas kept well away from organics, metals, and any source of ignition.

Where perchloric acid 70% is used

• Wet digestion of ores, alloys and organic matrices in analytical laboratories
• Perchlorate salt manufacture
• Electropolishing of stainless steel and specialty alloys
• Catalyst preparation in fine chemical synthesis

Key features

• Clear, colourless liquid.
• CAS 7601-90-3, HClO4.
• Also ordered as V561V90Bg2, Dioxonium perchlorate solution, Perchloric acid.
• Supplied in 40kg, with larger units quoted on request.
• Classified Danger (H271, H302, H314). Current SDS ships with every consignment.

Specification and grade

Perchloric acid at 70%, CAS 7601-90-3, a clear colourless liquid of density 1.664 g/mL at 25°C. Boiling point is about 203°C at atmospheric pressure and it freezes at −18°C. At 70% and ambient temperature it behaves as a strong acid; its oxidising character rises sharply with concentration and temperature.

Handling and storage

The most safety-critical product in this range: H271 may cause fire or explosion, strong oxidiser; H302 harmful if swallowed; H314 severe skin burns and eye damage. Hot concentrated perchloric acid in contact with organic material can detonate. Digestions belong in a dedicated, washdown perchloric fume hood, never in a general-purpose one where organic residues have accumulated in the ductwork. Store cool, alone, on a non-combustible base, well clear of organics, reducing agents and dehydrating agents.

Packaging and supply

Supplied in 40kg containers. Given the hazard profile we confirm the intended use and the receiving facility before accepting an order, and the safety data sheet is issued with the quotation as standard rather than on request.

References and related supply

• More from this range: Mining Chemicals
• Related products: Nitric Acid 55-60%, Lithium Chloride 99%, Acetic Acid Glacial 99%
• Independent chemical record: PubChem entry for CAS 7601-90-3