Synonyms: Sulfonic acids, petroleum, sodium salts;SULPHONICACIDS,PETROLEUM,SODIUMSALTS;Sulfonsuren, Erdl-, Natriumsalze, mittlere Molmasse 440-470 g/mol;Sulfonsuren, Erdl-, Natriumsalze, mittlere Molmasse 545 g/mol (0,5% ;SODIUM PETROLEUM SULFONIC ACIDS;Petroleum sulfonic acids sodium salts