| Product Name | 4-sulphophthalic anhydride |
| CAS No. | 134-08-7 |
| Synonyms | 5-Isobenzofuransulfonic acid, 1,3-dihydro-1,3-dioxo-; 4-Sulfophthalic anhydride; NSC 26435; 4-Sulphophthalic anhydride; Phthalic anhydride, 4-sulfo- (8CI); 1,3-dioxo-1,3-dihydro-2-benzofuran-5-sulfonic acid |
| InChI | InChI=1/C8H4O6S/c9-7-5-2-1-4(15(11,12)13)3-6(5)8(10)14-7/h1-3H,(H,11,12,13) |
| Molecular Formula | C8H4O6S |
| Molecular Weight | 228.1788 |
| Density | 1.82g/cm3 |
| Refractive index | 1.66 |
134-08-7 4-sulphophthalic anhydride
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