Armstrong's acid
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| Armstrong's acid | |
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Naphthalene-1,5-disulfonic acid |
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Other names
Armstrong's acid |
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| Identifiers | |
| CAS number | 81-04-9 |
| PubChem | 6666 |
| ChemSpider | 6414  |
| ChEBI | CHEBI:30890 |
| Jmol-3D images | Image 1 Image 2 |
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| Properties | |
| Molecular formula | C10H8S2O6 |
| Molar mass | 288.299 g/mol |
| Hazards | |
| Main hazards | corrosive |
 (verify) (what is:  / ?)Except where noted otherwise, data are given for materials in their standard state (at 25 °C, 100 kPa) |
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| Infobox references | |
Armstrong's acid (naphthalene-1,5-disulfonic acid) is a strong acid which is related to toluenesulfonic acid and is used in chemical synthesis. It was named for British chemist Henry Edward Armstrong.[1] It is sometimes used as a divalent counterion for forming salts of basic drug compounds, as an alternative to the related mesylate or tosylate salts. When used in this way such a salt is called a naphthalenedisulfonate salt, as seen with the most common salt form of the stimulant drug CFT.
References
- ^ Senning, Alexander (2007). Elsevier's dictionary of chemoetymology. Elsevier. p. 30. ISBN 978-0-444-52239-9 [Amazon-US | Amazon-UK].
