ES225610A3 - Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
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Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
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ROVIRA BACHS Y MACIA SA
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ROVIRA BACHS Y MACIA SA
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Process for the manufacture of the indophenol-thiosulfonic acids of carbazole or of N-alkyl-carbazole, or of their leuco-derivatives, characterized in that carbazole of high purity (98-99%) or N-alkyl-carbazole is condensed, with p-nitrosophenol in solution with concentrated sulfuric acid (95-100%), at temperatures between -15º and -25º c. And the resulting mass is poured on a solution of sodium thio-sulphate, stirring until the total transformation in indophenol acid -thio-sulphonic and at the same time in leuco-derivative. (Machine-translation by Google Translate, not legally binding)
ES0225610A1955-12-161955-12-16Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
ExpiredES225610A3
(en)
Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
Procedure for the manufacture of the indofenol-tiosulfºnic acids of the carbazol and N-alkil carbazol (Machine-translation by Google Translate, not legally binding)
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