Optical brightener OB (CAS :7128-64-5)
Fluorescent Whitening Agent OB
C.I. NO.: 184
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Optical brightener OB (CAS :7128-64-5)
Chemical Name: 2,5-bis(5-tertbutyl-2-benzoxazolyl)thiophene
Molecular Weight: 430
Molecular Formula: C26H26N2O2S
Content: ≥99.0%
Appearance: yellow or yellow green crystalline powder
Melting Point: 201-202°C
Properties: the max. spectral absorption wavelength: 375nm(in ethanol); the max. fluorescence emission wavelength: 435nm(in ethanol).
Description:
Uses: It can be used in the whitening of thermoplastic plastics, PVC, polystyrene, polyethylene, polypropylene, ABS, cellulose acetate, paint, coating, printing inks, etc. Brightener OB can be used in whitening of polymer at every processing stage, bring products brilliant blue white lustre. The foreign similar products have: Uvitex OB.
Usage: Add 0.01-0.05% brightener OB into the plastic, completely mix with plastic granular material, then contour machining. |
