Acquire dyestuffs:Recipe of Methylorange

0.1 mol Sulfanilacid in 150 ml Ethanol and 0.15 mol Natriumacetate in 120 ml Ethanol in Hydrocloride medium had mixed under stirring bei 0 Celcius and then added slowly in 0.1 mol N,N-Dimethylanilin. The mixture would had crystallized after a few hour. The crystallized product would had washed first with water and then added some Natriumchloride solution and then let it crystallized again.