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Benzenesulfonic acid, 2-methyl-5-nitro-;2-Methyl-5-nitrobenzenesulfonic acid;4-Nitro-o-toluenesulfonic acid
Molecular formula : C7H7NO5S
MW : 217.20
CAS No. :121-03-9

nature : lamellae. 133.5 ° C melting point.

preparation methods : by sulfonation of dinitrotoluene derived. Melt the right to nitrotoluene inhalation enamelled pot reaction by adding 20% oleum 980kg, control the temperature not exceeding 90 ° C After the increase, warming up to 105-110 ° C, for one hour. After the completion of reaction cooling to 70 ° C and water dilution. The 100 ° C for 30 minutes stirring, cold to 25 ° C, adjust the acidity after filtration, cake or 2-methyl-5-trinitrobenzene sulfonic acid.

purposes : the material is fluorescent brighteners and dyes intermediates.

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More Detailed Data:
1) 2-methyl-5-nitro-Benzenesulfonic acid;2-methyl-5-nitro-benzenesulfonic aci;2-methyl-5-nitrobenzenesulfonic acid;2-toluenesulfonic acid, 5-nitro;4-nitro-2-toluenesulfonic acid;5-nitro-2-methylbenzenesulfonic acid;5-nitro-o-toluenesulfonic acid;kyselina 4-nitrotoluen-2-sulfonova
2) 2-methyl-5-nitrobenzenesalfonic acid;4-nitrotoluene-2-sulfonic acid
3) 2-methyl-5-nitrobenzenesalfonic acid;4-nitrotoluene-2-sulfonic acid;p-nitrotoluene-o-sulfonic acid
4) 4-Nitrotoluene-2-sulfonic acid;2-Methyl-5-nitrobenzenesulfonic acid
5) o-Toluenesulfonic acid
6) o-toluenesulfonic acid
7) 2-Toluene sulfonic acid;2-methyl-Benzenesulfonic acid;2-methyl-benzenesulfonic aci;toluene-2-sulphonic acid;o-Toluenesulfonic acid
8) benzenesulfonic acid
9) Benzenesulfonic Acid
10) benzenesulfonic acid
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