Names | |
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Preferred IUPAC name
3-Aminobenzene-1-sulfonic acid | |
Other names
3-Aminobenzenesulfonic acid
m-Anilinesulfonic acid | |
Identifiers | |
3D model (JSmol)
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ChemSpider | |
ECHA InfoCard | 100.004.067 |
EC Number |
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PubChem CID
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UNII | |
UN number | 2585 |
CompTox Dashboard (EPA)
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Properties | |
C6H7NO3S | |
Molar mass | 173.19 g·mol−1 |
Appearance | Beige powder |
Density | 1.69 |
Melting point | >300 °C (lit.) |
Less than 1 mg/mL at 22 °C (72 °F) | |
Acidity (pKa) | 3.74 (H2O)[1] |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Metanilic acid is an isomer of sulfanilic acid with molecular formula C
6H
7NO
3S and molecular weight 173.18968 g/mol.[2][3][4][5] It is a white powder that is slightly soluble in water.