Empenthrin (also called vaporthrin) is a synthetic pyrethroid used in insecticides. It is active against broad spectrum of flying insects including moths and other pests damaging textile. It has low acute mammalian toxicity (its oral LD50 is above 5000 mg/kg in male rats, above 3500 mg/kg in female rats and greater than 3500 mg/kg in mice). It is however very toxic to fish and other aquatic organisms (96-hour LC50 in Oncorhynchus mykiss is 1.7 μg/L, 48-hour EC50 in Daphnia magna is 20 μg/L).

CAS：54406-48-3
中文别名：烯炔菊酯/炔戊菊酯;右旋反式炔戊菊酯;右旋-顺反式-2,2-二甲基-3-(2-甲基-1丙烯基)环丙烷羧酸\'-(±)-E-1-乙炔基-2-甲基-戊-2-烯基酯;炔戊菊酯;百扑灵;K-10浓缩苍蝇盘香原粉;烯炔菊酯;右旋炔戊菊酯;
英文别名：(2E)-1-ethynyl-2-methyl-2-penten-1-yl 2,2-dimethyl-3-(2-methyl-1-propen-1-yl)cyclopropanecarboxylate;s2852f;VAPORTHRIN;s2852forte;ma108;Empenthrin,Pestanal;Empenthrin;Empenethrin;s2852;(±)-(trans)-1-ethynyl-2-methylpent-2-enyl (±)-cis-trans-chrysanthemate;(3Ξ,4E)-4-methylhept-4-en-1-yn-3-yl (1Ξ,3Ξ)-2,2-dimethyl-3-(2-methylprop-1-en-1-yl)cyclopropane-1-carboxylate;Emphenthrin;(1RS,2E)-1-ethynyl-2-methylpent-2-enyl (1RS,3RS;(1RS,2E)-1-ethynyl-2-methylpent-2-enyl (1RS)-cis-trans-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate;1RS,3SR)-2,2-dimethyl-3-(2-methylprop-1-enyl)cyclopropanecarboxylate;D-EMPENTHRIN;
分子式：C18H26O2
分子量：274.398
精确质量：274.193
Psa：26.3
Logp：4.1261

MDL号：MFCD01745518

外观与性状：液体
密度：0.999 g/cm3
沸点：346ºC at 760 mmHg
闪点：144ºC
折射率：1.527
稳定性：Stable. Incompatible with strong oxidizing agents.

RTECS号：GZ1728000
安全说明：S61
危险类别码：R22; R51/53
危险品运输编码：UN 3082
海关编码：2916209026
危险品标志：Xn; N

生产方法
(1).2-甲基-戊烯-2-醛的制备 在搅拌下,将75.5g丙醛滴加到100mL2%氢氧化钠溶液中,滴毕于85～90℃反应片刻,冷却后分取上层液,蒸馏收集137～140℃馏分,产品重49g,纯度99%,收率77%。 本品有优良的熏蒸效果,用于防治卫生害虫或侵蚀织物的害虫。可制作低温熏蒸剂、驱避剂。对蚊子防治效果优于胺菊酯,若每立方米含8mL药剂,20min击倒成蚊达100%。对家蝇击倒效果优于甲醚菊酯。混于涂料中可驱除蟑螂。
用途
本品有优良的熏蒸效果,用于防治卫生害虫或侵蚀织物的害虫。可制作低温熏蒸剂、驱避剂。对蚊子防治效果优于胺菊酯,若每立方米含8mL药剂,20min击倒成蚊达100%。对家蝇击倒效果优于甲醚菊酯。混于涂料中可驱除蟑螂。