| Chemical Name | tetrasodium 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-6-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,5-disulphonate |
| C.I. No. | 34140 |
| CAS No. | 4399-55-7 |
| Structure | ![tetrasodium 3-[[4-[[4-[(6-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-6-sulphonato-1-naphthyl]azo]-1-naphthyl]azo]naphthalene-1,5-disulphonate](https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img,w_126,h_75/https://dyeschemical.com/dyesadmin/uploads/structure/Direct-Blue-71.gif) |
| Specification | Molecular Formula : C40H23N7Na4O13S4 Molecular Weight : 1029.87 Shade : Blueish Grey Dull Blue;Non- Metal ; Neutral Flare |
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