Chemical Name: Optical Brightener DYB

Specification Chemistry：Derivative of Amino stillbene/Disodium Type. Apperance：Slight gray-yellowish powder Odor：none PH Range：7.0～9.0 Ionic Character: Anionic Color shade：Bluish white shade or as customer requirement Characteristics Very good dyeing yield at room temp.., and as good stability to alkalis and hydrogen peroxide. Can dissolved in the hot water. High whiteness increasing power. Excellent washing fastness. Minimum yellowing after high temperature drying. Contains bluing agent for its unique bluish color tone. Fastness Light                    2-3 Washing                  3 Perspiration(alkali)         4-5           (acid)          3-4 Dry heat fixation           4 Stability Peroxide bleaching liquid    Very good Sodium Chloride liquid      Good Reductant                 Good Hard water                Good Application Suitable for brightening cotton or nylon fabric with exhaust dyeing process under room temperature, has powerful strength of whiteness increasing, can achieve extra high whiteness. Suggested Usage -Exhaustion (With Scouring & Bleached cotton） 0.1-0.8%（o.w.f）           DYB 0.5%                      Sodium sulfate Liquor ratio                 30:1 Time/temperature            30-40min at 40℃ * optimum PH range for the process：PH 7-12 -One bath scouring & bleaching by hydrogen peroxide process 0.1-1.0%(o.w.f)              DYB 2g/l                        Scouring agent 3g/l                        Caustic soda(50%) 10g/l                       Hydrogen peroxide (35%) 2g/L                        Hydrogen peroxide stabilizer Liquor ratio                  10:1 -20:1 Time/temperature             40-60min at 90-100℃ -The following processes are available too Desizing/Scouring → Hydrogen peroxide bleaching → optical dyeing Desizing/Scouring → NaClO2 bleaching → Hydrogen peroxide bleaching → optical dyeing Packing, transport and storage 25kgs in one cardboard boxes. The product is non-hazardous,chemical properties stability,be used in any mode of transport. Please keep it at cool area and avoid the direct rays of the sun, storage for one year. Important hint This material is made only for internal study, and the above information and the conclusion obtained is based on our current knowledge and experience, so before applying it to the intended use, this material must be confirmed by users by testing for the intended conditions of use.