1,3-DIHYDRO-IMIDAZOL-2-ONE, 4-imidazolin-2-one, 1H-imidazol-2(3H)-one, phthallic anhydride, Phthalic anhydride, isobenzofuran-1,3-d, TEGO ADDBOND LTH, 1,2-Benzenedicarboxylic acid anhydride, Phthalic Anhydride (use RM 30723), Benzene-1,2-dicarboxylic acid anhydride, 1,2-Benzenedicarboxylic acid anhydride, Phthalic Anhydride, Phthalic Anhydride, 1,2-Benzenedicarboxylic acid anhydride, Phthalic Anhydride, 1,3-Isobenzofurandione, 1,2-Benzenedicarboxylic acid anhydride, Phthalic acid anhydride; Furan derivative, 1,2-Benzenedicarboxylic acid anhydride, 1,2-Benzenedicarboxylic acid anhydride, Phthalic anhydride 99.5%, Phthalic Anhydride,Ind,100%,Flk, Phthalic Anhydride LXC 1502, PHTHALIC ANHYDRIDE (C-1128), Phthalic Anhydride (Flakes)