(2E)-4-氧代戊-2-烯二酸

(2E)-4-氧代戊-2-烯二酸

(E)-4-oxopent-2-enedioic acid

6004-32-6

C5H4O5

144.08200

91.67000

-0.71910

144.00600

1.536

167.9ºC

1.582g/cm3

330.5ºC at 760 mmHg

2918300090

品名, 成分含量, 用途

2918300090 其他含醛基或酮基不含其他含氧基羧酸（包括酸酐、酰卤化物、过氧化物和过氧酸及该税号的衍生物）. 增值税率:17.0% 退税率:9.0% 监管条件:无 最惠国关税:6.5% 普通关税:30.0%

2918300090 other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives。Supervision conditions:None。VAT:17.0%。Tax rebate rate:9.0%。MFN tariff:6.5%。General tariff:30.0%

2918300090. Other carboxylic acids with aldehyde or ketone function but without other oxygen function, their anhydrides, halides, peroxides, peroxyacids and their derivatives. General tariff: