Optical brightener OEF

Optical brightener OEF

Structural formula 

Product Name: Optical brightener OEF

Chemical Name: 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole)

C.I.:184

CAS NO.:7128-64-5

Specifications

Molecular formula: C₂₆H₂₆N₂O₂S

molecular weight: 430

Appearance: light yellow powder

Mesh:800-1000

Tone: blue

Melting point: 196-203℃

Purity: ≥99.0%

Ash: ≤0.1%

Maximum absorption wavelength: 375nm（Ethanol）

Maximum emission wavelength: 435nm（Ethanol）

Properties

Optical brightener OEF 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 and brightening solvent-based coatings, paints, latex paints, hot melt adhesives and printing inks. Low dosage, high efficiency and environmental protection, with special effects on the ink.

Package

25kg fiber drum，with PE bag inside or as customer’s request.