Rubber Accelerator XT580 ( Typeó=) Chemical Name N --aliphatic benzothiazoles sIfenamide + retarde Properties Grey white or light yellow powder , atoxic , no --nitrosamine . no --carcinogenic effect . Application its curing rate 15 similar to that of NS It ' 5 suitable for NR and SR in radial tire manafacture. 25kg per PE bag