Abstract
The determination of sulphur in iron and steel by the titration of barium chloride solution using sodium rhodizonate as an indicator after combustion was studied.Sulphur dioxide and sulphur trioxide which was formed by combustion of iron and steel were absorbed with sodium peroxide solution and neutralized, and after the addition of an equal volume of alcohol and sodium rhodizonate indicator solution, the titration with barium chloride solution was carried out.