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    | product Name | 4-amino-5-hydroxynaphthalene-1,7-disulfonic acid |  
    | Synonyms | 4-Amino-5-hydroxynaphthalene-1,7-disulphonic acid; AI3-50014; l,7-Naphthalenedisulfonic acid, 4-amino-5-hydroxy- |  
    | Molecular Formula | C10H9NO7S2 |  
    | Molecular Weight | 319.311 |  
    | InChI | InChI=1/C10H9NO7S2/c11-7-1-2-9(20(16,17)18)6-3-5(19(13,14)15)4-8(12)10(6)7/h1-4,12H,11H2,(H,13,14,15)(H,16,17,18) |  
    | CAS Registry Number | 130-23-4 |  
    | EINECS | 204-982-3 |  
    | Molecular Structure |   |  
    | Density | 1.88g/cm3 |  
    | Refractive index | 1.764 |  
    | Hazard Symbols |  |  
    | Risk Codes |  |  
    | Safety Description |  |  |