以反式异构体为例。白色单斜棱晶。微有桂皮香气。溶于乙醇、甲醇、石油醚、氯仿,易溶于苯、乙醚、丙酮、冰醋酸、二硫化碳及油类,不溶于水。易燃。可随蒸汽挥发。相对密度1. 2475。熔点135~136℃。沸点300℃。
苯甲醛和醋酐在醋酸钠存在下加热(155℃),反应完成后,通入蒸汽蒸出苯甲醛,再以烧碱中和,离心分离,所得肉桂酸钠和醋酸钠溶液,经酸析得肉桂酸,以沸水再结晶,即得精制品。
主要用于制备酯类,供配制紫丁香型花香香精及用作医药(心可定)的中间体。也可用作测定铀和钒的试剂。
中文名 | 反式肉桂酸 |
英文名 | trans-Cinnamic acid |
别名 | 皮酸 桂酸 肉桂酸 桂皮酸 反-肉桂酸 反式肉桂酸 蛇舌草提取物 反式苯基丙烯酸 β-苯基丙烯酸 3-苯基丙烯酸 肉桂酸(标准品) 苯基丙烯酸(反式) |
英文别名 | Cinnamic acid trans-Ciamic acid Phenylacrylic acid (e)-2-propenoicaci trans-Cinnamic acid β-phenylacrylic acid 3-Phenylacrylic acid Nat.trans-Cinnamic acid CINNAMIC ACID, TRANS-(SG) 3-phenylprop-2-enoic acid trans-3-Phenylacrylic acid (2E)-3-phenylprop-2-enoate trans-Cinnamicacid 140-10-3 (E)-3-Phenyl-2-propenoic acid (2Z)-3-phenylprop-2-enoic acid (2E)-3-phenylprop-2-enoic acid trans-3-Phenyl-2-propenoic acid 2-{[(3alpha,5beta,6beta,7beta,8xi,9xi,14xi)-3,6,7-trihydroxy-24-oxocholan-24-yl]amino}ethanesulfonic acid |
CAS | 140-10-3 621-82-9 |
EINECS | 205-398-1 |
化学式 | C9H8O2 |
分子量 | 148.16 |
InChI | InChI=1/C9H8O2/c10-9(11)7-6-8-4-2-1-3-5-8/h1-7H,(H,10,11)/b7-6- |
InChIKey | WBYWAXJHAXSJNI-VOTSOKGWSA-N |
密度 | 1.248 |
熔点 | 133 °C (lit.) |
沸点 | 300°C(lit.) |
闪点 | >230°F |
水溶性 | 0.4 g/L (20 ºC) |
蒸汽压 | 1.3 hPa (128 °C) |
溶解度 | 0.4g/l |
折射率 | 1.5049 (estimate) |
酸度系数 | 4.44(at 25℃) |
PH值 | 3-4 (0.4g/l, H2O, 20℃) |
存储条件 | 2-8°C |
敏感性 | Easily absorbing moisture |
外观 | 结晶性粉末 |
比重 | 0.91 |
颜色 | White to almost white |
气味 | Faint odour |
最大波长(λmax) | ['273nm(MeOH)(lit.)'] |
Merck | 14,2299 |
BRN | 1905952 |
物化性质 | 本品为白色结晶,m.p.133℃,b.p.300℃,难溶于水,稍溶于热水,易溶于苯、丙酮、乙醚、冰醋酸等有机溶剂。 |
MDL号 | MFCD00004369 |
危险品标志 | Xi - 刺激性物品 |
风险术语 | 36/37/38 - 刺激眼睛、呼吸系统和皮肤。 |
安全术语 | S26 - 不慎与眼睛接触后,请立即用大量清水冲洗并征求医生意见。 S36 - 穿戴适当的防护服。 S37/39 - 戴适当的手套和护目镜或面具。 |
WGK Germany | 1 |
RTECS | GD7850000 |
TSCA | Yes |
海关编号 | 29163900 |
上游原料 | 乙酐 搪玻璃反应锅 |
下游产品 | L-苯丙氨酸 |
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以反式异构体为例。白色单斜棱晶。微有桂皮香气。溶于乙醇、甲醇、石油醚、氯仿,易溶于苯、乙醚、丙酮、冰醋酸、二硫化碳及油类,不溶于水。易燃。可随蒸汽挥发。相对密度1. 2475。熔点135~136℃。沸点300℃。
苯甲醛和醋酐在醋酸钠存在下加热(155℃),反应完成后,通入蒸汽蒸出苯甲醛,再以烧碱中和,离心分离,所得肉桂酸钠和醋酸钠溶液,经酸析得肉桂酸,以沸水再结晶,即得精制品。
主要用于制备酯类,供配制紫丁香型花香香精及用作医药(心可定)的中间体。也可用作测定铀和钒的试剂。
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