1,2,3-Benzotriazole Product Code: A1311 Brand Name: Petrocor® BTA CAS No.: 95-14-7 Main Content: 99.8% Application: Mainly used as antirust or corrosion inhibitors for copper or copper alloy etc in lubricant oil/grease, circulating water treatment, engine coolant etc. also used with antiscale additives Both main types are available : granules or needle.