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Dinoseb

      PESTICIDE NAME: Dinoseb
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      Trade Name(s): Sinox, DNBP, Dyanap, Premerge, Amaize
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      Manufacturer(s): Hoechst AG(West Germany)
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                       A.H. Marks & Co., Ltd. (Great Britain)
      I.  Basic information
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          A. Molecular structure: C10H12N2O5
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          B. Chemical name: 2-(sec-Butyl)-4,6-dinitrophenol
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          C. Derivatives: no information available
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          D. Molecular weight: 240 g/mole
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          E. Solubility in water: slightly soluble
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          F. Common physical appearance: yellow flammable solid formulated as
      1)oily solution of the free acid, 2)emulsifiable liquid of the covalent
      acetate, or 3)emulsifiable liquid of partly ionized amine or NH4+
      salts.
          G. Oral LD50(rat): 37-50 mg/kg
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          H. Pesticide classification: substituted phenolic herbicide
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          I. Restricted use list (N.Y.): yes
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             EPA priority pesticide list: no
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          J. Crop use: broadleaf weeds, nutsedge, annual grasses, apple,
      peach, pear, nectarine, apricot, cherry, plum, prune, grape, potato,
      annual weeds on beans, broadleaves and grasses under clear plastic
      mulch for cucumbers, muskmelon, watermelon, annual weeds on peas,
      potatoes, pumpkin
      II. Text
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           Dinoseb is a substituted phenolic herbicide, widely used in New
      York state on a variety of fruit and vegetable crops.  There is very
      little information in the scientific literature concerning dinoseb in
      the soil.  It is considered to be of short residence time in the soil
      and there is some disagreement as to its mobility.  Data concerning
      degradation rates was not available.
           Work by Lewis, et al. (1978) indicated that addition of dinoseb to
      loamy sand and silty clay loam soils did not affect CO2 evolution from
      the soil nor did it influence alfalfa decomposition thus it was
      concluded that dinoseb has no effect on microbial population.
      Additionally, dinoseb did not lessen the formation of inorganic N,
      P-solubilization or S-oxidation.  Dinoseb did reduce the algal
      population in loamy sandy by 90%.
      III. Soils information
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           A. Degradation and transformation
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           -short residual in soil(1)
           B. Adsorption and transport
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           -immobile(1)
           -mobility class IV where class V=very mobile(2)
      IV. References
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      1.Gardner, R.C. and R.L. McKellar.  J.Agric.FoodChem. 1980. 28. 258-61.
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      2.Helling, C.S., P.C. Kearney and M. Alexander. 1971.  Advances in
                                                             ___________
           Agronomy.23:147-240.
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      3.Hassall, K.A. 1982.  The Chemistry of Pesticides.
                             ___________________________
         Weinheim:VerlagChemie.
      4.Lewis, J.A., G.C. Papavizas and T.S. Hora. 1978.  Soil.Biol.Biochem.
                                                          _________
         10. 137-41.

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