Barium Alkylbenzene Sulfonate (T701) Property: Barium petroleum sulfonate T701 is a corrosion inhibitor widely used in at present. T701 has good oil solubility.readily adhered to metal surfaces,and forms a protective fim,preventing metal from corrosion and rusting. It has excellent anti-rust property for ferrous metal and non-ferrous metal. Generally, the addition amount is 1-10% according to different use conditions. Barium Sulfonate, % 45 Average Molecular Weight 900~1200