丁炔二酸 Acetylenedicarboxylic acid 乙炔二羧酸; 2-丁炔二酸:乙炔-1,2-二羧酸:乙炔二羧酸:乙炔二甲酸:乙炔二羧酸钾盐 Butynedioic acid; Acetaylenedicarboxylic Acid C4H2O4 114.06 InChI=1/C4H2O4/ch(H,5,6)(H,7,8) ℃ 131℃ soluble