Tinopal® OB by BASF is a 2,5-thiophenediylbis(5-tert-butyl-1,3-benzoxazole). It is a high molecular weight optical brightener / fluorescent whitening agent of the thiophenediyl benzoxazole class.
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CAS number
7128-64-5
Advantages
excellent resistance to heat, exceptional whitening properties, good light fastness, low volatility, is readily soluble in organic solvents, good compatibility in various substrates
