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2,4-D Specification

Active Ingredient 96% min.
Appearance Colorless powder. (pure)

2,4-D Physical And Chemical Properties

Chemical Name (2,4-dichlorophenoxy) acetic acid
Empirical Formula C8H6Cl2O3
CAS NO. 94-75-7
Molecular Weight 221.0
Structural Formula 2,4-D structural formula
Melting point 140.5°C
Solubility In water 311 mg/l (pH1,25°C); 0.6g/l (20°C). In ethanol 1250, diethyl ether 243, heptane 1.1, toluene 6.7, xylene 5.8 (all in g/kg, 20°C). In soluble in petroleum oils. Mono-n-butylamine salt: In water at 30°C, 18g/l.
Vapor pressure 1.1 x 10-2 mPa (20°C)
Acute oral LD50 375-666mg/kg (rat)

2,4-D Formulations

  • 80% sodium salt S.P. ;
  • 720g /l amine salt ;
  • 2,4-D Dimethyl Ammonium 84% w/v SL ;
  • 2,4-D Butyl Ester 79.2% w/v EC

2,4-D Application


There are many forms or derivatives of 2,4-D including esters, amines, and salts. Unless otherwise specified, this document will refer to the acid form of 2,4-D. 2,4-D, a chlorinated phenoxy compound, functions as a systemic herbicide and is used to control many types of broadleaf weeds. It is used in cultivated agriculture, in pasture and rangeland applications, forest management, home, garden, and to control aquatic vegetation. It may be found in emulsion form, in aqueous solutions (salts), and as a dry compound.

2,4 D is a selective systemic herbicide. Salts are readily absorbed by the roots, whilst esters are readily absorbed by the foliage. Translocation occurs, with accumulation principally at the meristematic regions of shoots and roots. Acts as a growth inhibitor.

Post-emergence control of annual and perennial broad-leaved weeds in cereals, maize, sorghum, grassland, established turf, grass seed crops, orchards (pome fruit and stone fruit), cranberries, asparagus, sugar cane, rice, forestry, and on non-crop land (including areas adjacent to water) at 0.28 -2.3 kg /ha.

Control of broad-leaved aquatic weeds. The isopropyl ester can be also be used as a plant growth regulator to prevent premature fruit fall in citrus fruit.

2,4-D Material Safety Data Sheet (MSDS)

Table Of Content
  • chemical product and company identification
  • composition / information on ingredients
  • hazards identification
  • first aid measures
  • fire fighting measures
  • accidental release measures
  • handling and storage
  • exposure controls / personal protection
  • physical and chemical properties
  • stability and reactivity
  • toxicological information
  • ecological information
  • disposal considerations
  • transport information
  • regulatory information
  • other information

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