Synonym(s): Butynedioic acid Formula: HO2CC CCO2H Formula weight: 114.06 Purity: 97% CAS Number: 142-45-0 UN Number: UN2928 Hazard Class: 6.1 Packing Group: II Harmonized Tariff Code:  2917.19 Hazard Statements: H300-H310-H330-H314-H318 Fatal if swallowed. Fatal in…