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3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]

更新时间:2025-09-26 19:41:35

3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]结构式
3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]结构式
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常用名 3,3'-ethylidenebis[4-hydroxy-2-benzopyrone] 英文名 3,3'-ethylidenebis[4-hydroxy-2-benzopyrone]
CAS号 1821-16-5 分子量 350.32200
密度 1.534g/cm3 沸点 520.7ºC at 760 mmHg
分子式 C20H14O6 熔点 N/A
MSDS N/A 闪点 188.6ºC

 名称

英文名 4-hydroxy-3-[1-(4-hydroxy-2-oxochromen-3-yl)ethyl]chromen-2-one
英文别名 更多

 物理化学性质

密度 1.534g/cm3
沸点 520.7ºC at 760 mmHg
分子式 C20H14O6
分子量 350.32200
闪点 188.6ºC
精确质量 350.07900
PSA 100.88000
LogP 3.46240
蒸汽压 1.14E-11mmHg at 25°C
折射率 1.717

 安全信息

危险品运输编码 UN 2811
包装等级 III
危险类别 6.1(b)
海关编码 2932209090

 海关

海关编码 2932209090
中文概述 2932209090. 其他内酯. 增值税率:17.0%. 退税率:13.0%. 监管条件:无. 最惠国关税:6.5%. 普通关税:20.0%
申报要素 品名, 成分含量, 用途
Summary 2932209090. other lactones. VAT:17.0%. Tax rebate rate:13.0%. . MFN tariff:6.5%. General tariff:20.0%

 英文别名

Methyl-dicumarol
4,4'-dihydroxy-3,3'-ethane-1,1-diyl-bis-chromen-2-one
Ethylidene dicoumarol
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