| Chemical Name | Disodium 3-hydroxy-4-[(1-hydroxy-8-sulpho-2-naphthyl)azo]naphthalene-1-sulphonate |
| C.I. No. | 14880 |
| CAS No. | 6370-08-7 |
| Structure | ![Disodium 3-hydroxy-4-[(1-hydroxy-8-sulpho-2-naphthyl)azo]naphthalene-1-sulphonate](https://sp-ao.shortpixel.ai/client/to_webp,q_glossy,ret_img,w_126,h_75/https://dyeschemical.com/dyesadmin/uploads/structure/Acid_Blue_158.gif) |
| Specification | Molecular Formula : C20H12N2O8S2.2Na Molecular Weight : 518.43 |
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