二甲嘧酚
二甲嘧酚用途
1.内吸性杀菌剂,可防治黄瓜和甜瓜霜霉病、菊花白粉病等。其盐酸盐均为液剂。
2.嘧啶类内吸性杀菌剂,兼有治疗作用,对各种作物白粉病有特效。主要用于瓜类、蔬菜、甜菜及麦类、橡胶树、柞树等。对木本科植物效果显著,可用0.25%含量土壤施药,药效6周以上,对禾本科植物效果次之,喷雾含量为0.001%~0.1%,当年6~8月施药,防治效果达90%以上。如黄瓜白粉病用0.01%含量喷雾,柞树白粉病用0.1%含量喷雾,防治效果95%。
二甲嘧酚名称
[ CAS 号 ]:
5221-53-4
[ 中文名 ]:
二甲嘧酚
[ 英文名 ]:
4(3H)-Pyrimidinone,5-butyl-2-(dimethylamino)-6-methyl-
[中文别名 ]:
[英文别名 ]:
- Caswell No. 128A
- EINECS 226-021-7
- Dimethirimol
- PP 675
- Melkeb
- Dimethyrimol [ISO-French]
- Dimethirimol [BSI:ISO]
- 5-butyl-2-(dimethylamino)-6-methylpyrimidin-4-ol
- 5-Butyl-2-dimethylamino-6-methylpyrimidin-4-ol
- Methyrimol
二甲嘧酚物理化学性质
[ 密度 ]:
1.07g/cm3
[ 沸点 ]:
296.1ºC at 760mmHg
[ 熔点 ]:
103℃
[ 分子式 ]:
C11H19N3O
[ 分子量 ]:
209.28800
[ 闪点 ]:
132.9ºC
[ 精确质量 ]:
209.15300
[ PSA ]:
49.25000
[ LogP ]:
1.89920
[ 折射率 ]:
1.536
[ 储存条件 ]:
库房通风低温干燥
二甲嘧酚MSDS
二甲嘧酚毒性和生态
CHEMICAL IDENTIFICATION
- RTECS NUMBER :
- UW6025000
- CHEMICAL NAME :
- 4-Pyrimidinol, 5-butyl-2-dimethylamino-6-methyl-
- CAS REGISTRY NUMBER :
- 5221-53-4
- LAST UPDATED :
- 199612
- DATA ITEMS CITED :
- 7
- MOLECULAR FORMULA :
- C11-H19-N3-O
- MOLECULAR WEIGHT :
- 209.33
- WISWESSER LINE NOTATION :
- T6N CNJ BN1&1 DQ E4 F1
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 :
- 2350 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- WRPCA2 World Review of Pest Control. (London, UK) V.1-10, 1962-71. Discontinued. Volume(issue)/page/year: 9,119,1970
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Administration onto the skin
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- >400 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- WRPCA2 World Review of Pest Control. (London, UK) V.1-10, 1962-71. Discontinued. Volume(issue)/page/year: 9,119,1970
- TYPE OF TEST :
- LDLo - Lowest published lethal dose
- ROUTE OF EXPOSURE :
- Intraperitoneal
- SPECIES OBSERVED :
- Rodent - rat
- DOSE/DURATION :
- 200 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- NATUAS Nature. (Nature Subscription Dept., POB 1018, Manasguan, NJ 08736) V.1- 1869- Volume(issue)/page/year: 219,1160,1968
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - mouse
- DOSE/DURATION :
- 800 mg/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- 28ZEAL "Pesticide Index," Frear, E.H., ed., State College, PA, College Science Pub., 1969 Volume(issue)/page/year: 5,79,1976
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Rodent - guinea pig
- DOSE/DURATION :
- 500 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: 9,293,1991
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Oral
- SPECIES OBSERVED :
- Bird - chicken
- DOSE/DURATION :
- 4 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: 9,293,1991
- TYPE OF TEST :
- LD50 - Lethal dose, 50 percent kill
- ROUTE OF EXPOSURE :
- Unreported
- SPECIES OBSERVED :
- Mammal - species unspecified
- DOSE/DURATION :
- 4 gm/kg
- TOXIC EFFECTS :
- Details of toxic effects not reported other than lethal dose value
- REFERENCE :
- 30ZDA9 "Chemistry of Pesticides," Melnikov, N.N., New York, Springer-Verlag New York, Inc., 1971 Volume(issue)/page/year: -,423,1971
二甲嘧酚安全信息
[ 危害码 (欧洲) ]:
Xn
[ 风险声明 (欧洲) ]:
21-52
[ 安全声明 (欧洲) ]:
36/37
[ 海关编码 ]:
2933599018
二甲嘧酚制备
1.由硫脲与硫酸二甲酯反应,生成物与二甲胺反应,然后再与2-丁基乙酰乙酸乙酯进行闭环,即制得本品。
2.N,N-二甲基胍硫酸盐的制备由尿素(40g)和硫酸二甲酯(210g)于40℃反应3h,然后升温至55~60℃,再冷至40℃反应4h,得甲基异脲硫酸盐备用。将甲基异脲硫酸盐27g加入反应瓶中,于10℃以下滴加40%二甲胺水溶液59g,升温至50℃,保温反应3h,蒸去水分13mL。反应液经浓缩后得晶体,干重12.5g。
3.2-正丁基乙酰乙酸乙酯的制备将小片金属钠13g陆续加入到250mL无水乙醇中,加毕后反应30min。然后一次加入乙酰乙酸乙酯65g,升温至80℃,滴加溴代正丁烷75g,反应物渐变为浅黄色乳状液,在滴加的同时有晶体析出,pH值9~10,反应时间10h,终点狆犎值7~8,静置过夜,倒出上层清液,再将底层溴化钠过滤,取少许无水乙醇洗涤溴化钠,合并洗液,减压蒸馏制得。
4.甲菌定的合成将4.6g小块金属钠陆续投入到120mL无水甲醉中,在搅拌下加入干燥的二甲基肌硫酸盐0.lmol,回流30 min后,加入正丁基乙醚乙酸乙酷0.2mol,于66℃反应20h左右,反应终,点pH值7-8,冷却,用冰酷酸中和至pH值7,过滤,滤液以二氯甲烷萃取_p次,合并萃取液,加无水硫酸钠过夜,过滤,脱洛,得甲菌定。
二甲嘧酚海关
[ 海关编码 ]: 2933599018
[ 中文概述 ]:
2933599018 二甲嘧酚,乙嘧酚,乙嘧酚磺酸酯。监管条件:S(进出口农药登记证明)。增值税率:17.0%。退税率:9.0%。最低关税:6.5%。普通关税:20.0%
[ 申报要素 ]: 品名, 成分含量, 用途, 乌洛托品请注明外观, 6-己内酰胺请注明外观, 签约日期
[ 监管条件 ]: S.进出口农药登记证明
[ Summary ]:
2933599018 5-butyl-2-(ethylamino)-6-methylpyrimidin-4-yl dimethylsulfamate
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