色酮-2-甲酸

色酮-2-甲酸

4-Oxo-4H-1-benzopyran-2-carboxylic acid

4940-39-0

C10H6O4

190.15200

67.51000

1.49120

190.02700

淡米色粉末

Stable at room temperature in closed containers under normal storage and handling conditions.

138.9ºC

Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances.

260 °C (dec.)(lit.)

1.493 g/cm3

sparingly soluble

337ºC at 760 mmHg

2918300090

3

R36/37/38

S26-S36-S37/39

DJ2476000

Xi

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: