optical brightener OB-1(C.I.393 and Cas .no 1533-45-5) yellowish even powder purity 98.5% used in plastic industry

FLUORECENT BRIGHTENER  OB-1

C.I.393       CAS:1533-45-5

STUCTURE:

MOLECULAR FORMULA: C₂₈H₁₈N₂O₂

MOLECULAR WEIGHT: 414.4(As International relative Atom Mass 1997)

MAX UV ABSORPTION WAVELENGTH: 374 nm(ethanol)

MAX OPTICAL EMITTING  WAVELENGTH: 434 nm

EXECUTIVE STANDARD: HG/T3703-2002

SPECIFICATIONS 

PROPERTY                  Optical Brightener OB-1 is a excellent diphenylethylene bisbenzoxazole type compound.It is unsoluble in water and has stable capability. And it also has good resistance to heat, sunlight, chlorine bleaching and migration. It owns especially high temperature tolrence,suitable for shaping various kinds of plastics and their products under high temperature. It has an ideal whitening effect on polyster fibers as well as polyester fiber-containing fabrics including polyester-cotton blend fabric. It can be used to whiten various kinds of plastics such as ABS,PS,HIPS,PA,PC,PP,EVA and rigid PVC.With addition of optical agent OB-1,polyamide fiber,nylon and polyester have significantly good whiteness. Mixed with this product, recycling polyester waste material, bottle material and slice flake will have a higher whiteness than before, different, recycling materials will have better similar color.

APPLICATION            Thoroughly dispersed in all those polymers. If any ultra violet spectrum absorption agent is used in the polymers, the optimal dosage of optical brightener OB-1 should be adjusted.

 PROCEDUR             For transparent product: 0.0025-0.005%                                                 Opaque product: ≤0.01-0.03%

PACKAG                 Packed in cardboard bucket or cardboard box after being firstly packed in plastic bag.Net weight per bucket is 20kg or 25kg.

TRANSPORTATION       Should avoid sunlight and crash

STORAGE                Should be stored in cool,dry and ventilate place, and storage time should not exceed 2 years