2,4-Dichlorophenoxyacetic acid: Difference between revisions

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== 2,4-Dichlorophenoxyacetic Acid (2,4-D) ==
{{Short description|A synthetic auxin herbicide used in agriculture and gardening}}
{{Chembox
| Name = 2,4-Dichlorophenoxyacetic acid
| ImageFile = 2,4-Dichlorophenoxyacetic acid structure numbered.svg
| ImageSize = 200px
| ImageAlt = Structural formula of 2,4-D
| ImageFile1 = 2,4-Dichlorophenoxyacetic-acid-3D-balls-2.png
| ImageSize1 = 200px
| ImageAlt1 = 3D model of 2,4-D
| IUPACName = 2,4-Dichlorophenoxyacetic acid
| OtherNames = 2,4-D
| Section1 = {{Chembox Identifiers
  | CASNo = 94-75-7
  | PubChem = 1486
  | ChemSpiderID = 1440
  | UNII = 9GJ0E4C590
  | KEGG = C11047
  | ChEBI = 28844
  | ChEMBL = 1615
  }}
| Section2 = {{Chembox Properties
  | C = 8
  | H = 6
  | Cl = 2
  | O = 3
  | Appearance = White crystalline solid
  | Density = 1.563 g/cm³
  | MeltingPt = 140 °C
  | BoilingPt = 160 °C (decomposes)
  }}
}}


[[File:2,4-Dichlorophenoxyacetic acid structure.svg|thumb|right|The molecular structure of 2,4-Dichlorophenoxyacetic acid (2,4-D).]]
'''2,4-Dichlorophenoxyacetic acid''' (commonly referred to as '''2,4-D''') is a widely used herbicide in agriculture and gardening. It is a type of synthetic auxin, which mimics the natural plant hormone auxin, leading to uncontrolled growth and eventually the death of the plant.


'''2,4-Dichlorophenoxyacetic acid (2,4-D)''' is an organic compound widely used as a systemic herbicide. It is known for its effectiveness in controlling broadleaf weeds while being less harmful to grasses.
==History==
2,4-D was first developed during the 1940s and became one of the first successful selective herbicides. It was used extensively in agriculture to control broadleaf weeds without harming grasses and cereal crops. Its development marked a significant advancement in agricultural practices, allowing for more efficient weed control.


== Chemical Properties ==
==Chemical Properties==
2,4-D has the chemical formula C8H6Cl2O3 and is classified as a phenoxy herbicide. It is usually produced in various salt and ester forms, which affect its solubility and volatility.
2,4-D is a white crystalline solid with a molecular formula of C₈H₆Cl₂O₃. It is soluble in water and has a melting point of 140 °C. The compound decomposes upon boiling.


== Usage in Agriculture ==
==Mechanism of Action==
2,4-D is extensively used in agriculture and gardening. It is effective in controlling weeds in cereal crops, lawns, turf, and grasslands. Its selective weed control allows it to target broadleaf weeds without damaging grass species.
2,4-D functions as a plant growth regulator by mimicking the action of auxins, which are natural plant hormones. When applied to plants, it causes uncontrolled cell division and growth, leading to the death of susceptible plants, particularly broadleaf weeds.


== Mode of Action ==
==Applications==
2,4-D is used in:
* [[Agriculture]]: To control broadleaf weeds in cereal crops, pastures, and grasslands.
* [[Horticulture]]: For lawn care and maintenance, controlling weeds in turf and gardens.
* [[Forestry]]: To manage unwanted vegetation.


[[File:Glyphosate vigne.jpg|thumb|Application of herbicides like 2,4-D in an agricultural setting.]]
==Safety and Environmental Impact==
While 2,4-D is effective in controlling weeds, it has raised concerns regarding its environmental impact and potential health effects. It is important to follow safety guidelines when handling and applying 2,4-D to minimize risks to humans and non-target species.


2,4-D acts as a growth regulator in plants. It mimics natural plant hormones, causing uncontrolled and unsustainable growth, leading to the death of targeted broadleaf weeds.
==Regulation==
2,4-D is regulated by various environmental and agricultural agencies worldwide. It is important for users to comply with local regulations regarding its use and application.


== Environmental Impact ==
==Gallery==
The environmental impact of 2,4-D includes potential risks to non-target plants and aquatic ecosystems. It has been the subject of extensive study and debate regarding its safety and environmental effects.
<gallery>
File:2,4-Dichlorophenoxyacetic acid structure numbered.svg|Structural formula of 2,4-D
File:2,4-Dichlorophenoxyacetic-acid-3D-balls-2.png|3D model of 2,4-D
File:2-4 Dow weed killer.jpg|Commercial product containing 2,4-D
File:Lantana 2-4-D effect close up.jpg|Effect of 2,4-D on Lantana
</gallery>


== Safety and Regulations ==
==Also see==
Regulations for the use of 2,4-D vary by country. There are safety guidelines for handling and applying this herbicide to minimize exposure and environmental contamination.
* [[Herbicide]]
* [[Auxin]]
* [[Weed control]]
* [[Agricultural chemistry]]


== External Links ==
{{Herbicides}}
* [https://pubchem.ncbi.nlm.nih.gov/compound/2_4-Dichlorophenoxyacetic-acid PubChem - 2,4-Dichlorophenoxyacetic acid]
{{Agricultural chemicals}}
* [https://www.epa.gov/ingredients-used-pesticide-products/24-d Environmental Protection Agency - 2,4-D]


[[Category:Herbicides]]
[[Category:Herbicides]]
[[Category:Agricultural Chemicals]]
[[Category:Chlorinated compounds]]
[[Category:Environmental Chemistry]]
[[Category:Plant hormones]]
[[Category:Dictionary of medicine]].
{{stub}}

Latest revision as of 02:48, 11 December 2024

A synthetic auxin herbicide used in agriculture and gardening


Chemical Compound
Identifiers
CAS Number
PubChem CID
ChemSpider ID
UNII
ChEBI
ChEMBL
Properties
Chemical Formula
Molar Mass
Appearance
Density
Melting Point
Boiling Point
Hazards
GHS Pictograms [[File:|50px]]
GHS Signal Word
GHS Hazard Statements
NFPA 704 [[File:|50px]]
References

2,4-Dichlorophenoxyacetic acid (commonly referred to as 2,4-D) is a widely used herbicide in agriculture and gardening. It is a type of synthetic auxin, which mimics the natural plant hormone auxin, leading to uncontrolled growth and eventually the death of the plant.

History[edit]

2,4-D was first developed during the 1940s and became one of the first successful selective herbicides. It was used extensively in agriculture to control broadleaf weeds without harming grasses and cereal crops. Its development marked a significant advancement in agricultural practices, allowing for more efficient weed control.

Chemical Properties[edit]

2,4-D is a white crystalline solid with a molecular formula of C₈H₆Cl₂O₃. It is soluble in water and has a melting point of 140 °C. The compound decomposes upon boiling.

Mechanism of Action[edit]

2,4-D functions as a plant growth regulator by mimicking the action of auxins, which are natural plant hormones. When applied to plants, it causes uncontrolled cell division and growth, leading to the death of susceptible plants, particularly broadleaf weeds.

Applications[edit]

2,4-D is used in:

  • Agriculture: To control broadleaf weeds in cereal crops, pastures, and grasslands.
  • Horticulture: For lawn care and maintenance, controlling weeds in turf and gardens.
  • Forestry: To manage unwanted vegetation.

Safety and Environmental Impact[edit]

While 2,4-D is effective in controlling weeds, it has raised concerns regarding its environmental impact and potential health effects. It is important to follow safety guidelines when handling and applying 2,4-D to minimize risks to humans and non-target species.

Regulation[edit]

2,4-D is regulated by various environmental and agricultural agencies worldwide. It is important for users to comply with local regulations regarding its use and application.

Gallery[edit]

  • Structural formula of 2,4-D
    Structural formula of 2,4-D
  • 3D model of 2,4-D
    3D model of 2,4-D
  • Commercial product containing 2,4-D
    Commercial product containing 2,4-D
  • Effect of 2,4-D on Lantana
    Effect of 2,4-D on Lantana

Also see[edit]


Pest control: herbicides
Anilides/anilines
Aromatic acids
Arsenicals
HPPD inhbitors
Nitriles


Template:Agricultural chemicals

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