Ammonium nonanoate

Ammonium nonanoate is a nonsystemic, broad-spectrum contact herbicide that has no soil activity.[1] It can be used for the suppression and control of weeds, including grasses, vines, underbrush, and annual/perennial plants, including moss, saplings, and tree suckers. Ammonium nonanoate is marketed as an aqueous solutions. At room temperature at its maximum concentration in water (40%). Solutions are colorless to pale yellow liquid with a slight fatty acid odor. It is stable in storage. Ammonium nonanoate exists as white crystals.[2]

Ammonium nonanoate
Ammonium nonanoate.svg
IUPAC name
Ammonium nonanoate
Other names
Ammonium pelargonate; Pelargonic acid ammonium salt
3D model (JSmol)
  • InChI=1S/C9H18O2.H3N/c1-2-3-4-5-6-7-8-9(10)11;/h2-8H2,1H3,(H,10,11);1H3 checkY
  • InChI=1/C9H18O2.H3N/c1-2-3-4-5-6-7-8-9(10)11;/h2-8H2,1H3,(H,10,11);1H3
  • [NH4+].[O-]C(=O)CCCCCCCC
Molar mass 175.272 g·mol−1
Appearance Colorless solution
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Ammonium nonanoate is made from ammonia and nonanoic acid, a carboxylic acid widely distributed in nature, mainly as derivatives (esters) in such foods as apples, grapes, cheese, milk, rice, beans, oranges, and potatoes and in many other nonfood sources.


  1. ^ US patent 6323156 
  2. ^ Biopesticide Registration Action Document, Ammonium Nonanoate, US EPA, 2006