optical brightener OB (C.I.184 and CAS no.7128-64-5) purity 99% white yellowish powder used in plastic

FLUORECENT BRIGHTENER  OB

C.I.184       CAS:7128-64-5

STUCTURE:

MOLECULAR FORMULA: C₂₆H₂₆N₂O₂S

MOLECULAR WEIGHT: 430.2 (As International relative Atom Mass 1997)

MAX UV ABSORPTION WAVELENGTH: 375 nm(ethanol)

MAX OPTICAL EMITTING  WAVELENGTH: 435 nm

EXECUTIVE STANDARD: HG/T3703-2002

SPECIFICATIONS 

PROPERTY                   Optical Brightener OB is a kind of benzoxazole compound. It is odorless, hard to dissolve in water, soluble in paraffin, fat,mineral oil, wax and common organic solvents. It can be used for whitening thermoplastic platics,PVC,PS,PE,PP,ABS,Acetate fiber, paint, coating, printing ink,etc. It can be added at any stage in the process of whitening the polymers and make the finished products emit a bright bluish white glaze. It can also be used as special marks in indentify anti-fake material if used in printing ink.

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 should be adjusted.

 PROCEDUR             PVC    white 0.01-0.05%(10-50g)         transparent 0.0001-0.001%(0.1-1g)         PS     white 0.001%(about 1g)           transparent 0.0001-0.001%(0.1-1g)        ABS    natural color 0.01-0.05%(10-50g)   white  0.01-0.05%(10-50g)            PE/PP  colorless 0.0005-0.001%(0.5-1g)    white 0.005-0.05%(5-50g)              other plastic are like above

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