P

Perchloric acid

IUPAC: perchloric acid

HClO4 Acids CAS 7601-90-3
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Quick Reference
Formula / NotationHClO4
CAS Number7601-90-3
Molecular Weight100.46
Melting Point-170 °F (USCG, 1999)
Boiling Point19 °C @ 11 MM HG
Density1.6 to 1.7 at 77 °F (USCG, 1999)
SolubilityMISCIBLE IN COLD WATER
AppearancePerchloric acid, with more than 50% but not more than 72% acid appears as a clear colorless odorless aqueous solution. Corrosive to metals and tissue. Closed containers may rupture violently under ...
Also Known As7601-90-3; CHEBI:29221; V561V90BG2; DTXSID8047004; RefChem:6111; Dioxonium perchlorate solution; DTXCID6027004; 231-512-4; MFCD00011325; Perchloric Acid (70%)
CategoryAcids

What is Perchloric acid?

Perchloric acid (HClO4) is an acid that appears as Perchloric acid, with more than 50% but not more than 72% acid appears as a clear colorless odorless aqueous solution. Corrosive to metals and tissue. Closed containers may rupture violently under .... It has a molecular weight of 100.46 g/mol. Boiling point: 19 °C @ 11 MM HG. Melting point: -170 °F (USCG, 1999).

Formula & Notation

HClO4

IUPAC Name: perchloric acid

Other Names / Synonyms: 7601-90-3; CHEBI:29221; V561V90BG2; DTXSID8047004; RefChem:6111; Dioxonium perchlorate solution; DTXCID6027004; 231-512-4; MFCD00011325; Perchloric Acid (70%)

Properties & Characteristics

Appearance: Perchloric acid, with more than 50% but not more than 72% acid appears as a clear colorless odorless aqueous solution. Corrosive to metals and tissue. Closed containers may rupture violently under .... Molecular formula: ClHO4. Molecular weight: 100.46 g/mol. Boiling point: 19 °C @ 11 MM HG. Melting point: -170 °F (USCG, 1999). Density: 1.6 to 1.7 at 77 °F (USCG, 1999). Solubility: MISCIBLE IN COLD WATER. Vapor pressure: 6.8 [mmHg]. LogP: 2.3.

Physical Data

PropertyValue
Melting Point-170 °F (USCG, 1999)
Boiling Point19 °C @ 11 MM HG
Density1.6 to 1.7 at 77 °F (USCG, 1999)
Molecular Weight100.46
SolubilityMISCIBLE IN COLD WATER
AppearancePerchloric acid, with more than 50% but not more than 72% acid appears as a clear colorless odorless aqueous solution. Corrosive to metals and tissue. Closed containers may rupture violently under ...

Uses & Applications

Used in industrial chemical synthesis, fertilizer production, battery electrolytes, metal processing, and laboratory acid-base reactions.

Safety Information

Corrosive. Causes severe burns to skin, eyes, and respiratory tract. Wear appropriate PPE including gloves, goggles, and lab coat. Consult SDS before use.

Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.

Key Facts

Term Perchloric acid
Formula HClO4
CAS Number 7601-90-3
Molecular Weight 100.46
Category Acids
Synonyms 7601-90-3; CHEBI:29221; V561V90BG2; DTXSID8047004; RefChem:6111; Dioxonium perchlorate solution; DTXCID6027004; 231-512-4; MFCD00011325; Perchloric Acid (70%)

Frequently Asked Questions

Perchloric acid (HClO4) is an acid that appears as Perchloric acid, with more than 50% but not more than 72% acid appears as a clear colorless odorless aqueous solution. Corrosive to metals and tissue. Closed containers may rupture violently under .... It has a molecular weight of 100.46 g/mol. Boiling point: 19 °C @ 11 MM HG. Melting point: -170 °F (USCG, 1999).

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Editorial standards: Chemical data is sourced from peer-reviewed literature, CAS Registry, NIST WebBook, and PubChem. Safety information reflects guidance from OSHA, ECHA, and IAEA. For educational purposes only — always consult official SDS documentation and qualified professionals before handling chemicals.