12224-04-3 1340-71-2 1340-72-3 2H-1-Benzopyran-2-one, 7-(diethylamino)-4-methyl-, mixt. with disodium sulfate 39471-50-6 51848-33-0 52051-36-2 7-(Diethylamino)-4-methyl-2H-1-benzopyran-2-one mixt. with disodium sulfate 8066-05-5 C.I. Fluorescent Brightener 56 C.I. Fluorescent Brightener 61 Calcofluor White RWP