| Identification | 
           
         
      | Name: | Benzenesulfonic acid,2-[2-(2-hydroxy-1-naphthalenyl)diazenyl]- | 
| Synonyms: | Benzenesulfonicacid, 2-[(2-hydroxy-1-naphthalenyl)azo]- (9CI); Benzenesulfonic acid, o-[(2-hydroxy-1-naphthyl)azo]-(8CI); 1-(2'-Sulfophenylazo)-2-naphthol | 
| CAS: | 6616-62-2 | 
| Molecular Formula:  | C16H12 N2 O4 S | 
| Molecular Weight:  | 312.3431 | 
| InChI:  | InChI=1/C16H12N2O3S/c19-14-10-9-11-5-1-2-6-12(11)16(14)18-17-13-7-3-4-8-15(13)22(20)21/h1-10,17H,(H,20,21)/b18-16+ | 
  
      
            | Molecular Structure: | 
            ![(C16H12N2O4S) Benzenesulfonicacid, 2-[(2-hydroxy-1-naphthalenyl)azo]- (9CI); Benzenesulfonic acid, o-[(2-hydroxy-1...](https://img1.guidechem.com/chem/e/dict/64/6616-62-2.gif)  | 
          
           
          
          
            | Properties | 
          
          | Flash Point:  | 301.1°C | 
| Boiling Point:  | 574.3°C at 760 mmHg | 
| Density: | 1.43g/cm3 | 
| Refractive index: | 1.711 | 
| Flash Point:  | 301.1°C | 
  
          
          
          
          
            | Safety Data | 
          
          
        
          
          
            |   | 
              |