CYHEXATIN 三环锡

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三环锡

商品名称:Plictran
通用名称:Cyhexatin
化学名称:三环己基氢氧化锡
分子式:C18H34OSn
分子量:385.16
物化性质:本品为白色或淡黄色粉末,熔点195-198℃,蒸气压(20℃)<10-5毫帕,溶解性(25℃)水1毫克/升,丙醇1.3克/升,氯仿216克/升,甲醇37克/升,苯16克/升,甲苯10克/升,二甲苯3.6克/升,二氯甲烷34克/升。在弱酸或弱碱性的水悬浮液中稳定,室温下稳定,在紫外线照射下分解。
毒性:本品为低毒,对大鼠急性口服LD50为739.4mg/kg,对螨类天敌及蜜蜂无害。
原药指标:
指标名称指标
一级品二级品
三环锡含量,%≥95.090.0
作用特点:三环锡为触杀作用较强的广谱杀螨剂。可杀灭幼螨、若螨、成螨和夏卵。尤其是对有机磷和有机氯农药已产生抗性的害螨更具有特效。具有速效性好,残效期长的特点。对光和雨水有较好的稳定性。在常用浓度下对作物安全。
适用作物:苹果、柑桔、葡萄、梨、山楂、桃、茶树、花卉、棉花等作物。

 

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cyhexatin
Acaricide
IRAC 12B; organotin acaricide

  CYHEXATIN

NOMENCLATURE
Common name cyhexatin (BSI, E-ISO, (m) F-ISO, ANSI, ESA); tricyclohexyltin hydroxide (JMAF)
IUPAC name tricyclohexyltin hydroxide
Chemical Abstracts name tricyclohexylhydroxystannane
CAS RN [13121-70-5] EEC no. 236-049-1 Development codes Dowco 213 (Dow) Official codes ENT 27 395-X; OMS 3029

PHYSICAL CHEMISTRY
Mol. wt. 385.2 M.f. C18H34OSn Form Colourless crystals. V.p. Negligible (25 ºC) Solubility In water <1 mg/l (25 ºC). In chloroform 216, methanol 37, dichloromethane 34, carbon tetrachloride 28, benzene 16, toluene 10, xylene 3.6, acetone 1.3 (all in g/kg, 25 ºC). Stability Stable to 100 ºC in aqueous suspensions from slightly acid (pH 6) to alkaline conditions; degraded by u.v. light.

COMMERCIALISATION
History Acaricide reported by W. E. Allison et al. (J. Econ. Entomol., 1968, 61, 1254). Developed from a joint project of Dow Chemical Co. and M & T Chemicals Inc. and introduced by Dow Chemical Co. (now Dow AgroSciences, who no longer manufacture or market it). Patents US 3264177; US 3389048 Manufacturers Cerexagri; Chemia; Oxon; Sundat

APPLICATIONS
Biochemistry Inhibitor of oxidative phosphorylation; disruptor of ATP formation. Mode of action Non-systemic acaricide with contact action. Uses Control of the motile stages of a wide range of phytophagous mites (adults and larvae) on pome fruit, stone fruit, vines, hops, nuts, bush fruit, strawberries, vegetables, tomatoes, cucurbits and ornamentals. Phytotoxicity Non-phytotoxic to deciduous fruit, vines, vegetables, and outdoor ornamentals. Slight injury (usually in the form of localised spotting) may occur on citrus fruit (particularly developing fruits and immature foliage), and glasshouse ornamentals and vegetables (seedlings and immature foliage). Formulation types SC; WP. Compatibility Should not be applied in combination with wetting agents. Selected products: 'Acarstin' (Sipcam); 'Mitacid' (Sipcam); 'Oxotin' (Oxon); 'Pennstyl' (Cerexagri); 'Sipcatin' (Sipcam)

OTHER PRODUCTS
'Aracnol F' (Diachem); 'Triran' (Chemia) Discontinued products: 'Plictran' * (DowElanco)

ANALYSIS
Product analysis by rplc (CIPAC Handbook, 1988, D, 46; AOAC Methods, 17th Ed., 988.02). Residues determined by glc (Pestic. Anal. Man., 1979, II; Anal. Methods Residues Pestic., 1988, Part II; E. Möllhoff, Pflanzenschutz-Nachr. (Engl. Ed.), 1977, 30, 249) or by atomic absorption spectroscopy (J. L. Love & J. E. Patterson, J. Assoc. Off. Anal. Chem., 1978, 61, 627).

MAMMALIAN TOXICOLOGY
Reviews FAO/WHO 71, 73 (see part 2 of the Bibliography). Oral Acute oral LD50 for rats 540, rabbits 500-1000, guinea pigs 780 mg/kg. Skin and eye Acute percutaneous LD50 for rabbits >2000 mg/kg. Irritating to eyes. NOEL (2 y) for dogs 0.75, mice 3, rats 1 mg/kg daily. ADI (JMPR) 0.007 mg/kg b.w. [1994] (with azocyclotin). Toxicity class WHO (a.i.) III; EPA (formulation) III EC classification Xn; R20/21/22| N; R50, R53

ECOTOXICOLOGY
Birds Acute oral LD50 for chickens 650 mg/kg. Dietary LC50 (8 d) for mallard ducklings 3189, bobwhite quail 520 mg/kg diet. Fish LC50 (24 h) for large-mouth bass 0.06, goldfish 0.55 mg/l. Bees Virtually non-hazardous to honeybees (dermal LD50 0.032 mg/bee) at the recommended rates of use. Other beneficial spp. Virtually non-hazardous to most predacious mites and insects at the recommended rates of use.

ENVIRONMENTAL FATE
EHC 15 (WHO 1980). Soil/Environment Dicyclohexyl tin hydroxide, monocyclohexyl tin hydroxide, and inorganic tin compounds are formed as metabolites. Degradation is promoted by u.v. light.