Package: 30kg plastic drum. It can be packed according to the requirement of the user.

Uses : Mainly used for whitening polyester, its blends fabric and acetate fiber in low temperature.

Product description: Optical Brightening Agent HPS-4 Chemical name Stilbene derivative Structural formula Specification Appearance: Slight yellow slurry Fluorescent Color: Natural bluish Whitening strength: 100±3( compared with standard sample) Ionic character Nonionic Treating process: 1） Exhausting process: Dosage: 0.1-0.3 % (o.w.f) Bath ratio:1:10-20 Temperature: 98-100℃ Time: 30-60 min PH value: 6-12 2) Padding process: Dosage: 1-3 g/l Temperature: 100℃~180-190℃ Time: 20-30 seconds Use: Mainly used for whitening polyester, its blends fabric and acetate fiber in low temperature. Package: 30kg plastic drum. It can be packed according to the requirement of the user.