The benzodioxans are a group of isomeric chemical compounds with the molecular formula C8H8O2. There are three isomers of benzodioxan, as the second atom of oxygen of the dioxane can be in a second, third or fourth position: 1,2-dioxane, 1,3-dioxane and 1,4-dioxane, which respectively give 1,2-benzodioxan, 1,3-benzodioxan and 1,4-benzodioxan.

CAS：493-09-4
中文别名：1,4-苯并二氧六环;2,3-二氢-1,4-苯并二恶英;1,2-乙烯基二氧苯;1,4-苯并二噁烷;
英文别名：1,4-benzdioxane;Pyrocatechol ethylene ether;Benzo-1,4-dioxane;2,3-dihydrobenzo[b][1,4]dioxane;1,4-Benzodioxin, 2,3-dihydro-;2,3-dihydro-1,4-benzodioxin;2,3-dihydro-1,4-benzodioxane;1,4-BENZODIOXANE;2,3-Dihydrobenzo[b][1,4]dioxine;1,4-Benzdioxan;2,3-dihydrobenzo[b][1,4]dioxine;1,2-Ethylenedioxybenzene;2-benzyl-1,4-dioxane;1,2-ETHYLENEDIOXYBENZENE;1,2-ETHYLENDIOXYBENZENE;BENZO-1,4-DIOXANE;2,3-dihydro-benzo[1,4]dioxine;2,3-Dihydro-1,4-benzodioxin;
分子式：C8H8O2
分子量：136.148
精确质量：136.052
Psa：18.46
Logp：1.4578

MDL号：MFCD00006821

外观与性状：透明无色液体
密度：1.142g/mLat 25°C(lit.)
沸点：103°C6mm Hg(lit.)
闪点：190°F
折射率：n20/D 1.549(lit.)
水溶解性：insoluble
稳定性：Stable under normal temperatures and pressures.
储存条件：Keep away from sources of ignition. Store in a cool, dry place. Store in a tightly closed container.
蒸汽压：0.039mmHg at 25°C

RTECS号：DF4728000
安全说明：S23-S24/25
WGK Germany：3
海关编码：29329995
危险品标志：Xi

用途
用于生产原发性高血压和良性前列腺增生的药物多沙唑嗪。