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2,4,5-三氯苯氧乙酸

2,4,5-三氯苯氧乙酸
IUPAC名
2,4,5-Trichlorophenoxyacetic acid
别名 2,4,5-T、2,4,5-涕
识别
CAS号 93-76-5  checkY
ChemSpider 1435
SMILES
 
  • Clc1cc(OCC(=O)O)c(Cl)cc1Cl
InChI
 
  • 1/C8H5Cl3O3/c9-4-1-6(11)7(2-5(4)10)14-3-8(12)13/h1-2H,3H2,(H,12,13)
InChIKey SMYMJHWAQXWPDB-UHFFFAOYAR
ChEBI 27903
RTECS AJ8400000
KEGG C07100
性质
化学式 C8H5Cl3O3
摩尔质量 255.49 g·mol⁻¹
外观 白至黄色晶体
密度 (20°C) 1.80 g/cm³
熔点 154-158 °C
溶解性 238 mg/kg (30 °C)
危险性
警示术语 R:R22-R36/37/38-R50/53
安全术语 S:S24-S60-S61
相关物质
相关化学品 2,4-二氯苯氧乙酸
若非注明,所有数据均出自标准状态(25 ℃,100 kPa)下。

2,4,5-三氯苯氧乙酸,也称2,4,5-涕酸2,4,5-T,可用作植物的生长调节剂、除草剂。纯品为白色无臭晶体,难溶于水,对人体有一定危害。根据不同植物施用适当计量,可以防止植物落花落果,但用量不当会使植物受到严重伤害。 2,4,5-三氯苯氧乙酸具有一定的毒性,对老鼠LD50是389mg/kg ,而大鼠是500 mg/kg。

美军越战时于越南所喷洒的橙剂之中,即含有2,4,5-T。

参见

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2,4,5-三氯苯氧乙酸
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