Mepronil 灭锈胺

请下载《资料收集库-农药电子书》获得更多农药资料。想获得更多更系统的农药资料?想创建自己的农资电子书?请访问 http://www.9ele.com/pesticide.html


灭锈胺

CAS号: 55814-41-0
英文名称:Mepronil
化学名称:N-(3-异丙氧基苯基)-2-甲基苯甲酰胺; 2-methyl-n-(3-(1-methylethoxy)phenyl)-benzamid;
其他名称:担菌宁; 灭钙胺; 丙邻胺,纹达克
分子式: C17H19NO2
分子量: 269.34

理化性质:纯品为白色结晶体。m.p.92~93℃,b.p.186℃/10.665Pa。蒸气压 0.056×10-3Pa,闪点225℃,相对密度1.222(15℃)。20℃时溶解度为:丙酮>500g/L,甲醇>500g/L,苯28.2g/L,己烷1.1g/L,水12.7mg/L,分配系数4570。对光、热稳定,在水、弱酸和弱碱(pH值5~9)介质中稳定,但在强碱介质中较易水解。

毒性:属低毒杀菌剂。原药大鼠和小鼠急性经口LD50 >10g/kg,大鼠和兔急性经皮LD50 >10g/kg,大鼠急性吸入LC50>1.32mg/L,对兔眼睛和皮肤有刺激作用。在试验条件下,未见致畸、致突变、致癌作用。鲤鱼LC50(48小时)为8.6mg/L,蜜蜂接触LD50>1g/头,经口LD50>0.1g/头,鹌鹑LD50 >2g/kg,野鸭LD50 >2g/kg,母鸡LD50 >8g/kg.。鱼毒LC50(96小时):鲤鱼8mg/L,虹鳟10 mg/L。

作用特点及用途:酰胺类杀菌剂,对担子纲菌类病害有特殊生物活性的内吸性杀菌剂。能有效地防治水稻纹枯病,小麦条锈病,棉花立枯病,也可用于防治梨赤星病,小麦雪腐病,马铃薯、番茄丝菌核病,梨、菊花锈病,黄瓜苗立枯病。如防治水稻纹枯病用20%可湿性粉剂对水400倍液叶面喷雾(有效成分7.5/100m2 ),防治效果84%,或用3%粉剂300~405kg喷粉。防治小麦锈病每百平方米用75%可湿性粉剂20~40g对水喷雾,或用3%粉剂300~405g喷粉。防治棉花苗立枯病及黄瓜苗立枯病可用本药剂进行种子处理或土壤处理。担菌宁为杀菌剂,对担子菌纲真菌有特效,能有效地防治水稻纹枯病、小麦根腐病、马铃薯丝核菌病及疫病、梨树锈病、棉花立枯病等。残效期长,无药害,可在水面、土壤中放施用,也可用于种子处理。同时,也是良好的木材防腐、防霉剂。

剂型:50%可湿性粉剂;混剂如:本品+多菌灵,本品+三嗪磷+林丹、本品+三乙膦酸铝+噻菌灵、本品+已唑醇、本品+苯茵灵、本品+代森锌、本品+戊茵唑、本日口口.+萎锈灵、本品+戊菌隆、本品+甲萘威、本品+五氯硝基苯等。

生产方法:由N-3-羟基苯基-2-甲基苯甲酰胺,在甲醇中用2-溴丙烷进行烷基化反应,也可用邻甲基苯甲酸或邻甲基苯甲酰氯与异丙氧基苯胺反应制得。

方法一、间氨基酚、乙酐、异溴丙烷、邻甲基苯甲酸、三氯化磷经N-乙酰基间氨基酚的制备、N-乙酰基间异丙氧基苯胺的制备、间异丙氧基苯胺的制备、担菌宁的制备制得。制备方法一:
N-乙酰基间氨基酚的制备 将25g(0.23mol)间氨基酚,18.0g(0.30mol)乙酸,25g(0.264mol)乙酐和25mL水混合后,搅拌溶解,油浴加热1h,冷却至5℃,过滤、水洗、干燥得产品23g,收率66.5%。
N-乙酰基间异丙氧基苯胺的制备 将30.2g (0.2mol) N-乙酰基间氨基苯酚,4.8g (0.22mol)氢氧化钠和100mL乙醇混合后,搅拌溶解,然后加入32.0g (0.26mol)溴化异丙烷,加热回流5h,放置至室温,过滤,除去固体溴化钠,蒸去80%乙醇,冷却过滤,得产品38g,收率98%。
间异丙氧基苯胺的制备 将38.6g (0.2mol) N-乙酰基间异丙氧基苯胺,一定量的35%盐酸和200mL水混合后,油浴加热,于100~110℃反应2h,然后用30%氢氧化钠水溶液中和至中性,分出油层,水层用乙醚苯取,合并油层,硫酸镁干燥,蒸去乙醚,再减压蒸馏,得产品25.5g,收率85%。
邻甲苯甲酰氯的制备 由邻甲基苯甲酸与氯化亚砜酰氯化反应,生成邻甲苯甲酰氯,此工艺成熟。
灭锈胺的合成 将15.1g (0.1mol)的间异丙氧基苯胺,120mL的丙酮和4.2g (0.05mol)碳酸钠混合后,搅拌冷却至-5~-3℃,缓慢滴加15.5g(0.1mol)邻甲苯甲酰氯,于0℃反应2h,过滤除去氯化钠,母液蒸去丙酮,水洗,重结晶,干燥得产品26g。收率96.37%。
制备方法二:
间氨基苯酚的制备 硝基苯经发烟硫酸磺化,然后中和生成间硝基苯磺酸钠,还原生成间氨基苯磺酸钠,再经碱熔并酸化,生成间氨基酚。
2-甲基-N-(3'-羟基苯基)苯甲酰胺的制备 在三氯化磷存在下,邻甲基苯甲酸与间氨基酚在苯溶剂中反应,制得2-甲基-N-(3'-羟基苯基)苯甲酰胺。
灭锈胺的合成 将2-甲基-N-(3'-羟基苯基)苯甲酰胺、2-氯丙烷在氢氧化钠甲醇溶液中反应,制得灭锈胺。

生产情况:日本组合化学工业公司开发生产。国内企业:浙江新农化工股份有限公司(2000吨/年);徐州大洋化工有限公司

其他:日本组合化学获有专利US3937840(1976),GB1421112(1976),JP906789,特开昭55-40560(1980),53-37048(1977),50-42032(1975)。以过期。

 

Refer to <docbook-pesticides> for more data. Want more and better data of pesticides? Create your own ebook? Please visit: http://www.9ele.com/pesticide_en.html


mepronil
Fungicide
FRAC 7, C2; carboxamide

  mepronil

NOMENCLATURE
Common name mepronil (BSI, JMAF, draft E-ISO)
IUPAC name 3'-isopropoxy-o-toluanilide
Chemical Abstracts name 2-methyl-N-[3-(1-methylethoxy)phenyl]benzamide
CAS RN [55814-41-0] Development codes B1-2459; KCO-1 (Kumiai)

PHYSICAL CHEMISTRY
Composition Tech. is >94%. Mol. wt. 269.3 M.f. C17H19NO2 Form Colourless crystals. M.p. 92-93 °C V.p. 0.056 mPa (20 ºC) KOW logP = 3.66 Henry 1.19 ´ 10-3 Pa m3 mol-1 (calc.) Solubility In water 12.7 mg/l (20 ºC). In acetone >500, methanol >500, acetonitrile 314, benzene 282, hexane 1.1 (all in g/l, 20 ºC). Stability Stable to light, air, and heat. Stable in neutral, acidic, and weakly alkaline conditions, but hydrolysed in highly alkaline conditions. F.p. 225 °C

COMMERCIALISATION
History Reported by Kumiai Chemical Industry Co., Ltd. (I. Chiyomaru et al., ACS/CSJ Chem. Congr., Div. Pestic. Chem., Hawaii, No. 79 (1979); S. Kawada et al., Ann. Phytopath. Soc. Jap.,45(4), 547 (1979)). Reviewed by S. Doi (Jpn. Pestic. Inf., 1981, No. 38, p. 17) and introduced by Kumiai in 1981. Patents US 3937840; GB 1421112; JP 906789 Manufacturers Ihara/Kumiai; Sannong

APPLICATIONS
Biochemistry Inhibits succinic acid oxidation during metabolic respiration. Mode of action Systemic fungicide with protective and curative action. Uses Control of diseases caused by Basidiomycetes (e.g. Rhizoctonia, Puccinia, Typhula spp., etc.) in rice (at 0.5-0.75 kg/l), cereals (at 0.5-1.0 kg/l), potatoes, vegetables, cucumbers, sugar beet, fruit, vines, tobacco, turf grass (at 0.75-1.5 kg/l), ornamentals, etc. Also, when used as a seed or soil treatment, control of damping-off diseases of vegetables and tobacco. Formulation types DP; SC; WP. Selected products: 'Basitac' (Kumiai)

ANALYSIS
Product and residue analysis by glc; details available from Kumiai.

MAMMALIAN TOXICOLOGY
Oral Acute oral LD50 for rats and mice >10 000 mg/kg. Skin and eye Acute percutaneous LD50 for rabbits and rats >10 000 mg/kg. Non-irritating to skin and eyes (rabbits). Inhalation LC50 (6 h) for rats >1.32 mg/l. NOEL (2 y) for male rats 5.9, female rats 72.9, male mice 13.7, female mice 17.8 mg/kg b.w. daily. ADI 0.05 mg/kg. Other Non-mutagenic, non-teratogenic in rats and rabbits. Toxicity class WHO (a.i.) U; EPA (formulation) IV

ECOTOXICOLOGY
Birds Acute oral LD50 for hens >8000 mg/kg. Fish LC50 (96 h) for carp 8, rainbow trout 10 mg/l. Daphnia LC50 for D. carinata >10 mg/l. Bees Acute LD50 (oral) >0.1 mg/bee; (contact) >1 mg/bee.

ENVIRONMENTAL FATE
Animals Almost all of the dose applied to rats was excreted in urine and faeces within 96 h. Plants Almost all 14C applied to rice leaf sheath or leaf remained in the part treated, with some translocation upwards. Five metabolites were identified. Soil/Environment DT50 in flooded soil 46 d (volcanic sandy loam, pH 6.8, T.C. 1.47%), 50.5 d (alluvial, pH 6.5, T.C. 1.18%).