Metanilic Acid 

Names：3-Aminobenzene-1-sulfonic acid

Other names：3-Aminobenzenesulfonic acid，m-Anilinesulfonic acid

Identifiers

CAS Number： 121-47-1

Properties

Chemical formula：C6H7NO3S

Molar mass：173.19 g/mol

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).