Sulfuric Acid → 4-Amino-1,3-benzenedisulfonic acid
Reaktionsgleichung
[S:1](=[O:5])(=[O:4])([OH:3])O.[NH2:6][C:7]1[CH:12]=[CH:11][CH:10]=[CH:9][CH:8]=1>>[NH2:6][C:7]1[C:12]([S:1]([OH:5])(=[O:4])=[O:3])=[CH:11][C:10]([S:1]([OH:3])(=[O:5])=[O:4])=[CH:9][CH:8]=1Komponenten
3
Reaktionsbedingungen
- Temperatur
- 200 °C
Versuchsvorschrift
225.5 g (2.3 mol) of 100% strength sulphuric acid were added to 257.0 g (2.76 mol) of aniline in 460 ml of ortho oil. The suspension obtained was heated at 200° C. for 2.5 hours in a 1.3 1 enamel autoclave. After cooling, the mixture was filtered off with suction and the filter residue was dried. The 475.6 g of solid contained 80.7% of p-sulphanilic acid in addition to unchanged anilinium hydrogensulphate, based on the excess sulphuric acid employed. Aniline-2,4-disulphonic acid was not formed.
Aufarbeitung
- customThe suspension obtained
- temperature