Deltamethrin

Deltamethrin 

CAS :52918-63-5 

English name: deltamethrin 

Chemical name: α-cyano -3-- phenoxy benzyl (1R, 3R) 3 - (2,2 - dibromo-vinyl) -2,2 - dimethyl cyclopropane carboxylate;; (S) - α-Cyano-m-phenoxybenzyl-(1R, 3R) -3 - (2,2-dibromoyinyl)-2-dimethyl cyclopropane carboxylate 

Other name: Decis Su Ling Kaian Paul Kay 

Molecular formula: C22H19Br2NO3 

Molecular Weight: 505.1992 

Structure: 

Properties: pure product is white crystal, the original drug is white odorless powder, density: (relative to water) 1:0.5, vapor pressure of 2 × 10 kPa (25 ℃), melting point 98 ~ 101 ℃, soluble insoluble water, soluble in most organic solvents, 

Toxicity: moderately toxic to humans and animals. Acute toxicity: 138.7mg/kg (rat oral); 4640mg/kg (rat skin); pyrethrum ester pesticides highly toxic to fish, and has a very significant time effect. Deltamethrin on algae, Daphnia, fish are much higher than the toxicity of methyl parathion: deltamethrin on aquatic toxicity of the three were: Daphnia carp Scenedesmus. Highly toxic to bees and silkworms. Low toxicity to birds 

Role of the characteristics and insecticidal spectrum: pyrethrum ester pesticides, industrial production is the highest effectiveness of pesticides. With contact and stomach poisoning, contact action quickly, knock down power, no fumigation, and the suction effect, the high concentration of some pest repellent. Persistence length (7 to 12 days). Broad spectrum insecticide for Lepidoptera, Homoptera, Thysanoptera insect is very effective, because of Coleoptera species vary greatly in different efficacy of mite control efficacy difference. Mainly used for the control of cotton and other field crops, fruit trees, vegetables and other special crops on the main pests of cotton boll opening early, improve quality and yield of lint. Mu 0.5 to 1 gram of active ingredient. But mites, scale insects, bugs and other control effects such as low or almost null and void, but also stimulate the mites multiply in the insect mite complicated when mixed with the specific acaricide. 

Control agricultural pests, mainly in the EC on the water spray, used for cotton, vegetables, fruit, tea, oil crops, tobacco, sugar cane, Han Liang, trees, flowers and other crops, prevention and treatment of various aphids, cotton bollworm, pink bollworm , Pieris rapae, Plutella xylostella, Spodoptera exigua, beet armyworm, Huang Shou-melon, yellow striped flea beetle, peach borer, pear moth, peach moth borer, citrus leafminer, tea geometrid and tea, slug, fine tea moth, soybean pod borer, pod borer, bean wild moths, moth beans, sesame moth, sesame borer, cabbage butterfly, spotted butterflies, tobacco budworm, sugar cane borer, wheat armyworm, forest caterpillars, slug, etc., general mu 0.5 to 1 gram of active ingredient. Borer pests of insects into the plants should be fine before the spraying. 

Control storage pests, mainly in EC of water spray on the raw grain, seeds, insects and disinfection, the general persistence about six months. Grain in the granary and prohibited the use of commodities. On short positions, equipment, transport, packaging materials for pest control disinfection, generally by spray method. 

Health pest control, mainly in the WP water for residual spraying, or brushing to address health pest activity and habitat on the surface. Trapping can also be prepared to cockroach bait. Health pest control should not use EC. 

Formulation: 2.5% EC, 2.5% gum suspension agent, 0.025% ~ 0.05% granules, wettable powder 2.5%, 0.05%, 0.1% powder, l.25%, 5% water suspension agent, 0.1% to 2% over low volume sprays, etc. 

Production methods: acid and α-dibromo-Ju cyano -3-- esterification of phenoxy benzyl alcohol, can be obtained deltamethrin; or to daisy-dibromo acid chloride with thionyl chloride were oriented to produce dibromo Ju chloride, then with α-cyano -3-- phenoxy benzyl alcohol reaction. Consumption of raw materials fixed: Ju dibromo acid 640kg / t, α-cyano -3-- phenoxy benzyl alcohol 460kg / t. Production methods including the halogen exchange and ozone oxidation method: 

Halogen exchange: 

Ozonation: 

Production: the French company Roussel-uclaf development and production of pyrethrum ester pesticides. Domestic producers: moist Chemical Co., Ltd. Lianyungang; Jiangsu Agrochemical Co., Ltd. Real Madrid (Real Madrid Jiangsu Lianyungang Agricultural Co., Ltd.); Yancheng Limin Chemical Co., Ltd. (Yancheng Huang Long Industrial Co., Ltd.); too much of the Nanjing Chemical Co., Ltd.; Shandong Dacheng Pesticide Co., Ltd.; Hangzhou State of the Import and Export Co., Ltd.; Guangzhou State Agricultural Chemical Co., Ltd.; Young Farmers & Chemical Corporation (100t / a) 

Price: deltamethrin original drug price 60 yuan / ton (09.11)