Chemical Name 1,1'-biphenyl-4,4'-bis-benzoxazole CAS No. 40470-68-6 C.I. No. 378 Technical Index Appearance:slight yellow powder Melting Point:219-221�°C Purity:â?¥99% Maximum UV Spectrum Absorption:359nm Uses Mainly be used in whitening of plastics such as PVC,PS,ABS,TPR,etc.