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Nitrosylsulfuric acid
Chemical compound / From Wikipedia, the free encyclopedia
Nitrosylsulfuric acid is the chemical compound with the formula HSO4NO. It is a colourless solid that is used industrially in the production of caprolactam,[3] and was formerly part of the lead chamber process for producing sulfuric acid. The compound is the mixed anhydride of sulfuric acid and nitrous acid.
Quick Facts Names, Identifiers ...
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Names | |
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IUPAC name
Nitrosylsulfuric acid | |
Other names
nitrosonium bisulfate, chamber crystals | |
Identifiers | |
3D model (JSmol) |
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ChemSpider |
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ECHA InfoCard | 100.029.058 ![]() |
PubChem CID |
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UNII | |
CompTox Dashboard (EPA) |
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Properties | |
HSO4NO | |
Molar mass | 127.08 g/mol |
Appearance | Pale yellow crystals[1] |
Density | 1.865 g/mL in 40% sulfuric acid soln [2] |
Melting point | 70 °C (158 °F; 343 K)[1] |
Boiling point | Decomposes |
Decomposes | |
Solubility | Soluble in H2SO4[1] |
Hazards | |
Occupational safety and health (OHS/OSH): | |
Main hazards |
Oxidizer |
Related compounds | |
Other anions |
NOCl |
Other cations |
NaHSO4 |
Related compounds |
NOBF4 |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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In organic chemistry, it is used as a reagent for nitrosating, as a diazotizing agent, and as an oxidizing agent.[1]