Principal Ingredients: benzoxazoles

Physical & Chemical Properties

Appearance: pale green powder Tone blue white (similar to the standard substances)

Purity ≥98%

Melting Point 198～203℃

Fineness ＞100mesh

Performance & Features

1. Pale green powder, tasteless, dissolvable in paraffin, fat, olefin and most organic solvents. Its spectrum can absorb the maximum wavelength of 375nm with the maximum transmitted length of 435nm(in ethanol). 2. Good brightening effects and weathering resistance requires a small quantity but can be widely used Application Scope OB is widely used in the brightening of thermoplastics as PVC, PE, PP, PS, ABS, PMMA, POM and thermosetting plastic, polyester fiber, paint, ink and coating. Usage Mode (compared to the weight of plastic raw material) Polyvinyl chloride brightening: 0.01～0.05% increase radiance: 0.0001～0.001% Polystyrene 0.0001～0.05% ABS: 0.01～0.05% Polyolefin colorless matrix: 0.0005～0.001% white matrix: 0.005～0.05%

CAS NO:7128-64-5;12224-40-7;52232-33-4

EC NO:230-426-4

Molecular Formula:C₂₆H₂₆N₂O₂S

Molecular Weight:430.5618

Synonyms:;Fluorescent Brightener OB;Fluorescent brightening agent 184;Fluorescent Whitening Agent OB;Optical Brightening Agent OB;Fluorescent Brightener 184;C.I. 184;Fluorescent Brightener OB-4;Fluorescent brightening agent 184;Optical Brightner OB;BBOT;C.I. Fluorescent Brightener 362;Uvitex 2B;TINOPAL CBS-X;UVITEX OB;UVITEX(R) 2B;TOSLAB 644820;2,5-BIS(5'-TERT-BUTYL-2'-BENZOXAZOLYL)THIOPHENE;2,5-BIS(5-TERT-BUTYL-2-BENZOXAZOLYL)THIOPHENE;2,5-BIS(5-TERT-BUTYL-BENZOXAZOL-2-YL)THIOPHENE;2,5-BIS(5-TERT-BUTYLBENZOXAZOYL)-2-THIOPHENE;2,5-BIS(5-T-BUTYL-2-BENZOXAZOLYL)THIOPHENE;2,5-Bis(5-tert-butyl-2-benzoxazolyl)thiophene;

Molecular Structure: