... 12340 mg/kgSYNONYMS1H,3H-Naphtho[1,8-cd]pyran-1,3-dione;naphthalene-1,8-dicarboxylic anhydride; 1,8-Naphthalenedicarboxylic anhydride; 1,8-nephthalic anhydride;DERIVATION CLASSIFICATIONCARBOXYLIC ACID ... vat dyes, fluorescent brighters and perylene pigmentsSALES SPECIFICATIONAPPEARANCEpale yellow powderPURITY98.0% minTRANSPORTATIONPACKINGHAZARD CLASSUN NO.OTHER INFORMATIONHazard Symbols: n/a, Risk ...