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CAS No. : | 82-75-7 | MDL No. : | MFCD00035730 |
Formula : | C10H9NO3S | Boiling Point : | - |
Linear Structure Formula : | - | InChI Key : | CYJJLCDCWVZEDZ-UHFFFAOYSA-N |
M.W : | 223.25 | Pubchem ID : | 6722 |
Synonyms : |
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Signal Word: | Warning | Class: | N/A |
Precautionary Statements: | P264-P280-P302+P352+P332+P313+P362+P364-P305+P351+P338+P337+P313 | UN#: | N/A |
Hazard Statements: | H315-H319 | Packing Group: | N/A |
GHS Pictogram: |
* All experimental methods are cited from the reference, please refer to the original source for details. We do not guarantee the accuracy of the content in the reference.
Yield | Reaction Conditions | Operation in experiment |
---|---|---|
94% | With sulfuric acid; at 120 - 155℃;Industrial scale; | So the metering groove 237 kg aniline by adding the pot, to start stirrer 441 kg concentration of greater than 98% of concentrated sulfuric acid, in the case of the vicious circle, by adding 300 kg of 1-naphthylamine-8-sulfonic acid to continue heating, dehydrating atmosphere.When the affect reach 120-130 C time, dehydration-end, to the volume of the material in the measurement, if it is lower than the normal volume, the aniline is added.Continued heating to 155 ±2 C, then maintaining 10-12 hours, sampling analysis, 1-naphthylamine-8-sulfonic acid content ? 0.6% to be qualified, the qualified to the vacuum distillation pot, otherwise prolonged holding time.Follow-up steps of the embodiment with the specific embodiment 1 the same.The embodiment of the preparation obtained N-phenyl-1-naphthylamine-8-sulfonic acid, its yield is 94%, the purity is 98%. |