... (1% /cm): 1105-1181 max in UV range:348-350nm CBS-X is a greenish yellow crystalline powder, soluble in water ... , anionic type, maximum spectrum absorption at 348-350nm.CBS-X is an optical fluorescent brightener of the distyryl biphenyl ... class, suitable for theoptical brightening of synthetic detergents, scented soaps and soaps at all stages of processing. Optical Brightener ...