Metanilic acid

Metanilic acid

Names
Preferred IUPAC name 3-Aminobenzene-1-sulfonic acid
Other names 3-Aminobenzenesulfonic acid m-Anilinesulfonic acid
Identifiers
CAS Number	121-47-1
3D model (Jmol)	Interactive image
ChemSpider	8161
ECHA InfoCard	100.004.067
EC Number	204-473-6204-473-6
PubChem	8474
UNII	OT03NUM20P
UN number	2585
InChI InChI=1S/C6H7NO3S/c7-5-2-1-3-6(4-5)11(8,9)10/h1-4H,7H2,(H,8,9,10)
SMILES C1=CC(=CC(=C1)S(=O)(=O)
Properties
Chemical formula	C6H7NO3S
Molar mass	173.19 g·mol^−1
Appearance	Beige powder
Density	1.69
Melting point	>300 °C (lit.)
Solubility in water	Less than 1 mg/mL at 22 °C (72 °F)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references

Metanilic acid is an isomer of sulfanilic acid with the sulfonic acid with molecular formula C
6H
7NO
3S and molecular weight 173.18968 g/mol.^[1][2][3][4] It is white powder that is slightly soluble in water.

References

1. Pubchem. "3-AMINOBENZENESULFONIC ACID - C6H7NO3S - PubChem". NIH.
2. "Metanilic acid - 121-47-1".
3. "Metanilic acid".
4. "METANILIC ACID (3-AMINO-BENZENESULFONIC ACID)".