Description

2,4-DB (4-(2,4-dichlorophenoxy)butanoic acid) is a selective systemic phenoxy herbicide widely used in agricultural and horticultural applications. With the molecular formula C₁₀H₁₀Cl₂O₃ and CAS number 94-82-6, this compound exhibits high purity and consistent performance in weed control. 2,4-DB is particularly effective against broadleaf weeds in leguminous crops such as peanuts, soybeans, and alfalfa, due to its unique mode of action as an auxin mimic. It is available in various formulations, including soluble concentrates and emulsifiable liquids, ensuring versatility in application methods. Proper handling and storage are recommended to maintain stability and efficacy.

Properties

• CAS Number: 94-82-6
• Complexity: 211
• IUPAC Name: 4-(2,4-dichlorophenoxy)butanoic acid
• InChI: InChI=1S/C10H10Cl2O3/c11-7-3-4-9(8(12)6-7)15-5-1-2-10(13)14/h3-4,6H,1-2,5H2,(H,13,14)
• InChI Key: YIVXMZJTEQBPQO-UHFFFAOYSA-N
• LogP: log Kow= 3.53
• Exact Mass: 248.0006996
• Molecular Formula: C10H10Cl2O3
• Molecular Weight: 249.09
• SMILES: C1=CC(=C(C=C1Cl)Cl)OCCCC(=O)O
• Topological: 46.5
• Monoisotopic Mass: 248.0006996
• Physical Description: 2,4-db appears as colorless crystals. Slightly corrosive to iron. A chlorinated phenoxy herbicide. Soluble in organic solvents.
• Color/Form: White crystals
• Odor: Slightly phenolic
• Melting Point: 118-120 °C
• Solubility: Water solubility: 46 ppm at 25 °C.
• Vapor Pressure: 0.0000111 [mmHg]
• Henry’s Law Constant: Henry’s Law constant estimated to be 2.29X10-9 atm-cu m/mole at 25 °C.
• Dissociation Constants: pKa= 4.95 at 25 °C
• Synonyms: 4-(2,4-Dichlorophenoxy)butanoic acid, 94-82-6, 2,4-DB, 2,4-dichlorophenoxybutyric acid, Butoxone, 2,4-D butyric acid, 4-(2,4-DICHLOROPHENOXY)BUTYRIC ACID, Embutox, CCRIS 1021, 2,4-DB [BSI:ISO], HSDB 6603, Embutox klean-up, EINECS 202-366-9, EPA Pesticide Chemical Code 030801, UNII-SL314DW868, BRN 1976809, Embutox (Salt/Mix), 2,4-D Butyric, DTXSID7024035, Embutone (Salt/Mix), CHEBI:73173, Embutox E (Salt/Mix), NSC-70337, Dichlorophenoxy)butyric acid, MB 2878 (Salt/Mix), DTXCID304035, 2,4-DB [HSDB], 2,4-DB [ISO], 4-06-00-00927 (Beilstein Handbook Reference), 2,4-DB [MI], Embutox E, 2,4D butyric acid, 2,4-dichlorophenoxybutyrate, 2,4DM, 4(2,4Dichlorophenoxy)butyric acid, 4(2,4Dichlorophenoxy)butanoic acid, 2,4 DM, Kyselina 4(2,4dichlorfenoxy)maselna, Butyric acid, 4(2,4dichlorophenoxy), gamma(2,4Dichlorophenoxy)butyric acid, Butanoic acid, 4(2,4dichlorophenoxy), 4-(2, 4-Dichlorophenoxy)butyric acid, Butanoic acid, 4(2,4dichlorophenoxy) (9CI), legumex, un2765, yivxmzjteqbpqo-uhfffaoysa-n, Butyrac, Legumex D, Butormone, Buratal, Butirex, Butoxon, Butoxone ester, Butyrac ester, Butyrac 118, Butyrac 200, Sys 67 Buratal, gamma-(2,4-Dichlorophenoxy)butyric acid, Butanoic acid, 4-(2,4-dichlorophenoxy)-, 2,4-DM, NSC 70337, Butyric acid, 4-(2,4-dichlorophenoxy)-, 2,4-(Dichlorophenoxy)butyric acid, 4-(2,4-DB), Kyselina 4-(2,4-dichlorfenoxy)maselna, SL314DW868, (2,4-Dichlorophenoxy)butyric acid, NCGC00094532-06, gamma-(2,4-dichlorophenoxy)butanoic acid, gamma-(2,4-dichlorophenoxy)-butyric acid, .gamma.-(2,4-Dichlorophenoxy)butyric acid, Butoxone amine, gamma-(2,4-dichlorophenoxy)-butanoic acid, Caswell No. 316, Venceweed, Kyselina 4-(2,4-dichlorfenoxy)maselna [Czech], MFCD00002819, Campbell’s db straight, Spectrum_001855, 2,4-DB 100 microg/mL in Acetonitrile, SpecPlus_000466, Spectrum2_001854, Spectrum3_000833, Spectrum4_000673, Spectrum5_001980, WLN: QV3OR BG DG, BSPBio_002385, KBioGR_001105, KBioSS_002372, SPECTRUM330041, MLS002207204, DivK1c_006562, SCHEMBL116448, 2,4-Dichlorophenoxybutyricacid, SPBio_001668, CHEMBL1892377, KBio1_001506, KBio2_002368, KBio2_004936, KBio2_007504, KBio3_001885, Butyric acid,4-dichlorophenoxy)-, Butanoic acid,4-dichlorophenoxy)-, AAA09482, NSC70337, Tox21_400080, BBL015279, CCG-39392, GEO-04121, SBB003160, STK107020, 4-(2,4-Dichlorophenoxybutyric) acid, 4-[2.4-Dichlorophenoxy]butyric acid, 2,4-dichloro-4-phenoxy-butanoic acid, AKOS000104014, CAS-94-82-6, 4-(2,4-Dichloro-phenoxy)-butyric acid, NCGC00094532-01, NCGC00094532-02, NCGC00094532-03, NCGC00094532-04, NCGC00094532-05, NCGC00094532-07, SMR000777852, VS-04882, 2,4-DB, PESTANAL(R), analytical standard, NS00006429, ST50051678, EN300-18168, D96079, Q229887, 2,4-DB 200 microg/mL in Methyl-tert. butyl etherr, 2,4-DB, certified reference material, TraceCERT(R), BRD-K69188402-001-04-2, Z57252704, 4-(2,4-Dichlorophenoxy)butyric acid, analytical standard

Application

2,4-DB is primarily used as a selective herbicide for controlling broadleaf weeds in legume crops, including peanuts and soybeans, without harming the host plants. It functions by mimicking natural plant hormones (auxins), disrupting normal growth patterns in susceptible weeds. This compound is often applied post-emergence, offering flexibility in integrated weed management systems. Its systemic action ensures thorough absorption and translocation within target plants.

Safety and Hazards

GHS Hazard Statements

• H302: Harmful if swallowed [Warning Acute toxicity, oral]
• H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P264, P270, P273, P301+P317, P330, P391, and P501

Hazard Classes and Categories

• Acute Tox. 4 (100%)
• Aquatic Chronic 2 (100%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.