Process for preparing 4,4-dinitrostilben-2,2-disulfonic acid
In the present invention there is disclosed a process for preparing 4,4'-dinitrostilben-2,2'-disulfonic acid and salts thereof by treating 4-nitrotoluene-2-sulfonic acid with an oxidant in the presence of strong bases, whereby oxidation takes place in a mixture of water and an organic solv...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | In the present invention there is disclosed a process for preparing 4,4'-dinitrostilben-2,2'-disulfonic acid and salts thereof by treating 4-nitrotoluene-2-sulfonic acid with an oxidant in the presence of strong bases, whereby oxidation takes place in a mixture of water and an organic solvent being selected from a group comprising alcohols, ethers and mixtures thereof. |
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