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Hydrogen sulfate (bisulfate)
Hydrogensulfate
Hydrogen sulfate (bisulfate)
Names
IUPAC name
Hydrogen sulfate
Other names
Bisulfate
Identifiers
CAS Number
14996-02-2
3D model (JSmol)
Interactive image
ChemSpider
55666
ECHA InfoCard100.108.048
CompTox Dashboard (EPA)
DTXSID3042425 Edit this at Wikidata
SMILES[show]
Properties
Chemical formula
HSO−
4
Molar mass97.071 g/mol
Melting point270.47 °C (518.85 °F; 543.62 K)
Boiling point623.89 °C (1,155.00 °F; 897.04 K)
Vapor pressure0.00791 Pa (5.93E-005 mm Hg)
Conjugate acidSulfuric acid
Conjugate baseSulfate
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
The conjugate base of sulfuric acid (H2SO4)—a dense, colourless, oily, corrosive liquid—is the hydrogen sulfate ion (HSO−
4), also called the bisulfate ion.[b] Sulfuric acid is classified as a strong acid; in aqueous solutions it ionizes completely to form hydronium ions (H3O+) and hydrogen sulfate (HSO−
4). In other words, the sulfuric acid behaves as a