C.I. Fluorescent Brightener 61;7-(Diethylamino)-4-methyl-2H-1-benzopyran-2-one mixt. with disodium sulfate;C.I. Fluorescent Brightener 56;Calcofluor White RWP;2H-1-Benzopyran-2-one, 7-(diethylamino)-4-methyl-, mixt. with disodium sulfate
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