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    Home > Chemical Pesticides > Insecticides > Carbofuran
    Carbofuran structure

    Carbofuran

    • CAS No:

      1563-66-2

    • Formula:

      C12H15NO3

    • Synonyms:

      Nex;yalox;d1221;Yaltox;brifur;D1221;mef248;oms864;BURAON;bay70

    • China Export:

      From 2018.11 to 2019.11, total export volume of Carbofuran from China was 71,354,697KG while total export value was $983,463,687. The biggest proportion of exporting volume in the last 12 months was 10.42% in 2019.03.

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    Description

    Carbofuran is a white crystal-like solid. It is slightly soluble in water, is stable under neutral and acidic conditions, but decomposes under alkaline conditions (U.S. EPA,2006a). Carbofuran is a broad-spectrum carbamate insecticide and nematicide. It is an odorless, white crystalline solid. On heating, it breaks down and can release toxic fumes, and irritating or poisonous gases. It is sparingly soluble in water, but very soluble in acetone, acetonitrile, benzene, and cyclohexone. The l

    Basic Attributes

    • 1563-66-2

    • C12H15NO3

    • 221.25

    • 221.105194

    • 47.6 A^2

    • 2.32

    • 216-353-0

    • DUEPRVBVGDRKAG-UHFFFAOYSA-N

    • 3

    • 1

    • 2

    Characteristics

    • White, brown Powder

    • 1.18

    • 150-153 °C(lit.)

    • 200°C

    • 162.8±30.7 °C

    • 1.5200 (estimate)

    • H2O: Slightly soluble . 0.07 g/100 mL

    • 0-6°C

    • Vapour pressure, Pa at 33°C: 0.0027

    • Stable under neutral or acid conditions, unstable in alkaline media

    Safety Information

    • I

    • 6.1(a)

    • 29329990

    • UN 2811 6.1/PG 1

    • 3

    • 26/28-50/53

    • 36/37-45-60-61-1/2

    • FB9450000

    • T+,N,T

    • The warehouse is ventilated at low temperature and dry; stored separately from oxidants, acids and food additives

    • Missing Phrase - N15.00950417-P260-P304 + P340 + P310-P403 + P233

    • H300 + H330-H410

    • Combustible in case of fire or high heat; produces toxic nitrogen oxide fumes when heated

    • Oral-Rat  LD50: 5 mg/kg; Oral-Mouse LD50: 2 mg/kg

    • most toxic

    Product Usage

    Systemic insecticide, acaricide, nematocide.

    Production Methods

    Starting from the chlorination reaction of o-nitrophenol, isopropene is chlorinated under a certain pressure to produce methyl chloropropene. After the chlorination reaction solution is processed by pressure filtration and distillation, the purity of the product can reach 96%. The etherification reaction of o-nitrophenol and methyl chloropropene in the presence of sodium carbonate produces 2-methallyl o-nitrophenol ether. Clayson reaction 2-Methylallyl o-nitrophenol ether is heated and converted to 2-(2-methylallyl)-6-nitrophenol by Clayson reaction. In the presence of anhydrous magnesium chloride, the Clayson rearrangement product cyclically synthesizes 2,3-dihydro-2,2-dimethyl-7-nitrobenzofuran (commonly known as 7-nitro). In the hydrogenation reaction, the 7-nitro group is reduced under pressure in the presence of a palladium/carbon catalyst to produce 2,3-dihydro-2,2-dimethyl-7-aminobenzofuran (commonly known as 7-amino). Diazotization reaction 7-amino group is diazotized with sodium nitrite aqueous solution and concentrated sulfuric acid to prepare 2,3-dihydro-2,2-dimethyl-7-benzofurandiazo sulfate (commonly known as 7 -Diazo sulfate). Hydrolysis 7-diazo sulfate is hydrolyzed to 2,3-dihydro-2,2-dimethyl-7-hydroxybenzofuran (commonly known as 7-hydroxy compound) under the catalysis of CuSO4. Synthesis of Carbofuran Synthesis of Carbofuran with 7-hydroxy compound and methyl isocyanate in a solvent in the presence of a small amount of triethylamine. The carbamate chloride method can also be used to drop MCC into the 7-hydroxy compound at 55°C with a yield of 97%. Starting from catechol This process route is that catechol is heated with methyl chloropropene in the presence of K2CO3·KI in anhydrous acetone solvent to produce 2-methylallyloxyphenol, and then heated to translocate , Cyclization to obtain 7-hydroxy compound. Then, in the presence of triethylamine, the isocyanate method was used to synthesize Kebowei. The operation process is as follows. Preparation of 2-methallyl oxyphenol under nitrogen protection, slowly add 40 parts (mass) potassium carbonate and 481 parts (mass) potassium iodide to 322 parts (mass) catechol and 300 parts mixed with stirring (Quality) in anhydrous acetone solution. The obtained material was heated to the reflux temperature, and 262 parts (mass) of methylchloropropene was slowly added. The mixture was refluxed for 30 hours, cooled and allowed to stand for 18 hours, filtered, and the filtrate was concentrated under reduced pressure. The remaining oil was extracted with chloroform and washed with water, dried, concentrated, and the remaining oil was distilled under reduced pressure to obtain 213 parts (mass) of 2 -Methallyl oxyphenol. 7-Hydroxy compound preparation 131 parts (mass) of 2-methallyl oxyphenol are translocated and cyclic, and an exothermic reaction occurs at 200°C, so that the temperature quickly reaches and maintains at 275°C, resulting in a thick syrup The substance was distilled under reduced pressure to obtain colorless 2,2-dimethyl-2,3-dihydro-7-hydroxybenzofuran (7-hydroxy compound). Synthesis of Carbofuran 16.6 parts (mass) of 7-hydroxy compound in 14 parts (mass) of ether were treated with 5.8 parts (mass) of isocyanic acid and 0.1 part (mass) of triethylamine, and the mixture was stirred at room temperature , Precipitation of white crystalline product. The solid crystal was separated to obtain 17.5 parts of Budweiser.

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    China Carbofuran Export Data

    Data referenced from General Administration of Customs,P.R.China

    2018.11-2019.11 China - America  Carbofuran Export Data

    From 2018.11 to 2019.11, total export volume of Carbofuran from China to America was 12,519,343KG while total export value was $152,357,070. The biggest proportion of exporting volume in the last 12 months was 11.16% in 2019.05.

    2018.11-2019.11 China Carbofuran Export Data

    From 2018.11 to 2019.11, total export volume of Carbofuran from China was 71,354,697KG while total export value was $983,463,687. The biggest proportion of exporting volume in the last 12 months was 10.42% in 2019.03.

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