... powder,melting piont 359C,purity is more than 98% Be used in whitening of polyester, nylon fiber and plastic Chemical name:2,2 ... , have strong fluorescence.2.A wide range of applicability, mainly be used in whitening of polyester, nylon fiber and plastic.3.Have a high ... plastic, hard PVC,ABS,EVA,PSand PC.3.Can be add in the conventional aggregation of polyester and nylon Optical Brightener OB-1