... and detergent industry. The catalogue of Optical Brightening Agents is as follows:Series for Polyester: DP-3, EB- ... 330(C.I.199), DT (CI.NO 199:1)Series for Cotton and Rayon: 4BK (C.I.113), ... C.I.113), MST (C.I.353) (pading)Series for Wool, Acrylic and Nylon: CL-E (C.I ... BAC (C.I.363), WGS (C.I.140)Series for Plastic: OB (C.I.184), OB-1 ... HST (C.I.357), HS (C.I.264)Series for Detergent: CBS-X (C.I.351), CXT ...