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2,4-dichlorophenoxyacetic acid

CAS Number
94-75-7
EC Number
202-361-1
Chemical Formula
C8H6Cl2O3
Molecular Weight
221.03 g/mol

Description

2,4-Dichlorophenoxyacetic acid (CAS 94-75-7 ), commonly known as 2,4-D, is a systemic herbicide active ingredient used to selectively control broadleaf weeds in agricultural and turf settings. It acts by mimicking plant growth hormones, causing uncontrolled growth in target weeds while leaving grasses largely unaffected. Formulators and agrochemical manufacturers source the acid form as the basis for a broad range of herbicide end-products. As a herbicide active ingredient, 2,4-D is formulated into amine salts, ester derivatives, and emulsifiable concentrates for use in cereal crops, pastureland, and corn production. Turf management products for golf courses, lawns, and roadside vegetation control rely on 2,4-D-based formulations to suppress dandelions, clover, and other broadleaf species. Industrial vegetation management programs, including utility rights-of-way and railway corridors, use high-concentration formulations derived from this acid. It also functions as a biocidal component in certain industrial cleaning and weed control products where selective plant elimination is required for maintenance. 2,4-D acid is supplied as a white to off-white crystalline powder. Technical grade is the standard commercial form, with purity levels typically at 96% or higher per FAO/WHO specifications. Bulk supply is available in fiber drums or multiwall bags, with formulation-grade material offered to agrochemical manufacturers and toll formulators for large-scale production. Contact us for supply of 2,4-dichlorophenoxyacetic acid Request Quote

Other Names (Synonyms)

dichlorophenoxyacetic acid | 2,4-dichlorophenoxyethanoic acid | 2,4-D acid | 2-(2,4-dichlorophenoxy)acetic acid | (2,4-dichlorphenoxy)acetic acid | (2,4-dichlorophenyloxy)acetic acid | 2,4-D | Dicopur

Key Technical Features

  • High Purity Grade standard
  • Consistent Batch Quality
  • Full Regulatory & REACH Support
  • Global Logistics Network enabled

Physical Properties

Melting Point138 °C
Boiling Point160 °C @ Press: 0.4 Torr
Density1.42 g/cm³ @ Temp: 25 °C
Flash Point160°C/0.4mm
Appearance2,4-Dichlorophenoxyacetic acid is a white to yellow crystalline powder with a slight phenolic odor.
Coloroff-white to tan
Formcrystalline
Water SolubilitySlightly soluble. Decomposes. 0.0890 g/100 mL
Vapor Pressure0.4 mm Hg ( 160 °C)
Refractive Index1.5000 (estimate)
Log P2.810

Safety & Handling

Danger
GHS05· CorrosiveGHS07· IrritantGHS08· Health HazardGHS09· Environment

Hazard Statements

H302
H302
H312
H312
H313
H313
H316
H316
H317
H317
H318
H318
H319
H319
H320
H320
H332
H332
H334
H334
H335
H335
H336
H336
H351
H351
H361
H361
H370
H370
H372
H372
H373
H373
H400
H400
H402
H402
H410
H410
H412
H412H302+
H312H302+H312

Precautionary Statements

P203
P203
P233
P233
P260
P260
P261
P261
P264
P264
P270
P270
P271
P271
P272
P272
P273
P273
P280
P280
P284
P284
P317
P317
P318
P318
P319
P319
P321
P321
P330
P330
P391
P391
P403
P403
P405
P405
P501
P501
P265
P265
P317
P317
P317
P317
P352
P352
P340
P340
P316
P316
P317
P317
P317
P317
P317
P317
P316
P316
P364
P364
P233
P233
P338
P338
P338

Trade & Regulatory

HS Code29189090
UN Number3077
ADR Class9
Packing GroupIII
Storage Class11 - Combustible Solids
WGK (Germany)2