环庚草醚

环庚草醚用途

【用途一】
选择性内吸传导型芽前土壤处理剂，属桉树脑类除草剂，可被敏感植物根系吸收，经木质部传导到根及芽的生长点，抑制分生组织生长，使之死亡。药剂进入水稻、棉花等作物体内之后，易被代谢成羟基化合物，并与植物体内的糖苷结合成共轭化合物而失去毒性。本品施药期宽，用量少，对稗草防效尤优。如防除水稻田稗草、鸭舌草、牛毛草，在移栽秧苗5～8d，稗草1.5叶期，用10%乳油2～3mL/100 m²，采用毒土、喷雾均可。施药时保持水层3 ～5cm，保水5～7d。旱地除草用量应当加大，如花生田用82%乳油7.5～12.5mL/100m²，在播后苗前进行土壤处理。

环庚草醚名称

[ CAS 号 ]:
87818-31-3

[ 中文名 ]:
环庚草醚

[ 英文名 ]:
Cinmethylin

[中文别名 ]:

[英文别名 ]:

SKH 301
Caswell No. 731G
cinch
MFCD01632785
argold
(2.2.1)heptane
exo-(+-)-xy)
Cinmethylin
Cinmethylin [iso]
EINECS 402-410-9

环庚草醚物理化学性质

[ 密度 ]:
1.04 g/cm3

[ 沸点 ]:
313°C

[ 分子式 ]:
C₁₈H₂₆O₂

[ 分子量 ]:
548.796

[ 闪点 ]:
147 °C

[ 精确质量 ]:
548.386536

[ PSA ]:
18.46000

[ LogP ]:
4.24780

[ 折射率 ]:
1.532

[ 储存条件 ]:
库房通风低温干燥,与食品原料分开储运

环庚草醚MSDS

详细MSDS(安全技术说明书)

环庚草醚毒性和生态

CHEMICAL IDENTIFICATION

RTECS NUMBER :: RN8762000

CHEMICAL NAME :: 7-Oxabicyclo(2.2.1)heptane, 1-methyl-4-(1-methylethyl)-2-((2-methylphenyl)methoxy )-, exo-(+-)-

CAS REGISTRY NUMBER :: 87818-31-3

LAST UPDATED :: 199710

DATA ITEMS CITED :: 8

MOLECULAR FORMULA :: C18-H26-O2

MOLECULAR WEIGHT :: 274.44

HEALTH HAZARD DATA

ACUTE TOXICITY DATA

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4553 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: FMCHA2 Farm Chemicals Handbook. (Meister Pub., 37841 Euclid Ave., Willoughy, OH 44094) Volume(issue)/page/year: -,C26,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: >2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,173,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Administration onto the skin

SPECIES OBSERVED :: Rodent - rabbit

DOSE/DURATION :: >2 gm/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: FMCHA2 Farm Chemicals Handbook. (Meister Pub., 37841 Euclid Ave., Willoughy, OH 44094) Volume(issue)/page/year: -,C26,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - quail

DOSE/DURATION :: >2150 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,173,1991

TYPE OF TEST :: LD50 - Lethal dose, 50 percent kill

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Bird - duck

DOSE/DURATION :: >5620 mg/kg

TOXIC EFFECTS :: Details of toxic effects not reported other than lethal dose value

REFERENCE :: PEMNDP Pesticide Manual. (The British Crop Protection Council, 20 Bridport Rd., Thornton Heath CR4 7QG, UK) V.1- 1968- Volume(issue)/page/year: 9,173,1991 ** OTHER MULTIPLE DOSE TOXICITY DATA **

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - rat

DOSE/DURATION :: 4550 mg/kg/13W-C

TOXIC EFFECTS :: Liver - changes in liver weight

REFERENCE :: TOXID9 Toxicologist. (Soc. of Toxicology, Inc., 475 Wolf Ledge Parkway, Akron, OH 44311) V.1- 1981- Volume(issue)/page/year: 5,222,1985

TYPE OF TEST :: TDLo - Lowest published toxic dose

ROUTE OF EXPOSURE :: Oral

SPECIES OBSERVED :: Rodent - mouse

DOSE/DURATION :: 10920 mg/kg/13W-C

TOXIC EFFECTS :: Liver - changes in liver weight

REFERENCE :: TOXID9 Toxicologist. (Soc. of Toxicology, Inc., 475 Wolf Ledge Parkway, Akron, OH 44311) V.1- 1981- Volume(issue)/page/year: 5,222,1985

环庚草醚安全信息

[ 符号 ]:

GHS07, GHS09

[ 信号词 ]:
Warning

[ 危害声明 ]:
H332-H411

[ 警示性声明 ]:
P273

[ 个人防护装备 ]:
Eyeshields;Faceshields;full-face respirator (US);Gloves;multi-purpose combination respirator cartridge (US);type ABEK (EN14387) respirator filter

[ 危害码 (欧洲) ]:
Xn: Harmful;N: Dangerous for the environment;

[ 风险声明 (欧洲) ]:
R20

[ 安全声明 (欧洲) ]:
S23-S61-S22

[ 危险品运输编码 ]:
UN3082 9/PG 3

[ RTECS号 ]:
RN8762000

环庚草醚制备

以1-蒎烯为起始原料，制备方法如下。

萜品-4-醇的制备将1-蒎烯0.735mol，35%硫酸0.714mol，催化剂0.2g均匀混合后，于20～30℃搅拌反应20h，然后加热到45℃，保温反应8h。弃去水层，在油层中加入50g 25%NaOH和50g异丙醇，回流并分馏出48g 1，4-桉树脑，含量70%.

将0.25mol 1,4-桉树脑，0.96mol 1,3-丙二胺，2.3g锂丝混合后于110℃搅拌反应9h，然后降温至50℃加水6mL，再在80℃下搅拌30min后，将反应液减压蒸馏，分出大部分胺类和萜烃类化合物，残留物水洗得40g萜品-4-醇，含量81%。

（±）-2-挂-羟基-1-甲基-4-异丙基-7-氧杂双环[2，2，1]庚烷的制备依次将30.8g萜品-4-醇，0.8g双（2，4-戊二酸）钒氧化物，300mL二氯乙烷和22g 90%过氧化叔丁醇（文献报道也有采用叔丁酸）加入反应器，放热、回流反应2h，加含0.8g对甲苯磺酸的10mL甘醇二甲醚溶液，继续回流1.5h，冷却，搅拌下加入0.8g无水醋酸钠，过滤，浓缩，减压蒸馏，得28.4g产物。

环庚草醚的合成在氮气保护下，将13.2g 50%氢氧化钠（经己烷洗涤），150mL干燥过的二甲基甲酰胺，加热至60℃，滴加42.5g上步产物与75mL二甲基甲酰胺混合溶液，约3h滴毕，反应温度控制在60～70℃，然后降温至20℃，滴加36.6g 2-甲基氯苄，约1.5h滴毕，反应温度为20～25℃，再到室温下搅拌反应6h，反应毕，将反应物倒入1000mL水中，用浓盐酸酸化，用200mL己烷分3次萃取，合并萃取液，干燥、过滤，脱溶于64g环庚草醚