UNE 55512-4:1982 SURFACE ACTIVE AGENTS. TECHNICAL SODIUM ALKYLARYL-SULPHONATES (EXCLUDING BENZENE DERIVATIVES). DETERMINATION OF THE CONTENT OF THE SODIUM SULPHITE
1982UNE 55512-4:1982 SURFACE ACTIVE AGENTS. TECHNICAL SODIUM ALKYLARYL-SULPHONATES (EXCLUDING BENZENE DERIVATIVES). DETERMINATION OF THE CONTENT OF THE SODIUM SULPHITE