Description

Dichlobenil (2,6-Dichlorobenzonitrile) is a selective herbicide belonging to the benzonitrile chemical class. With the molecular formula C₇H₃Cl₂N and CAS number 1194-65-6, it is widely recognized for its pre-emergent and post-emergent herbicidal activity. This crystalline solid exhibits high purity (>98%) and is soluble in organic solvents such as acetone and methanol, making it suitable for formulation in agricultural and research applications. Dichlobenil acts by inhibiting photosynthesis and cell division in target weeds, providing long-lasting residual control. It is particularly effective against annual and perennial weeds in non-crop areas, nurseries, and industrial sites. Proper handling and storage are recommended due to its moderate toxicity profile.

Properties

• CAS Number: 1194-65-6
• Complexity: 150
• IUPAC Name: 2,6-dichlorobenzonitrile
• InChI: InChI=1S/C7H3Cl2N/c8-6-2-1-3-7(9)5(6)4-10/h1-3H
• InChI Key: YOYAIZYFCNQIRF-UHFFFAOYSA-N
• LogP: log Kow = 2.74
• Exact Mass: 170.9642545
• Molecular Formula: C7H3Cl2N
• Molecular Weight: 172.01
• SMILES: C1=CC(=C(C(=C1)Cl)C#N)Cl
• Topological: 23.8
• Monoisotopic Mass: 170.9642545
• Physical Description: Dichlobenil is a white solid dissolved or suspended in a water-emulsifiable liquid carrier. The primary hazard is the threat to the environment. Immediate steps should be taken to limit spread to the environment. Can easily penetrate the soil and contaminate groundwater and nearby streams. Can cause illness by inhalation, skin absorption and/or ingestion. Used as a herbicide.
• Color/Form: White crystalline solid
• Odor: Aromatic odor
• Boiling Point: 518 °F at 760 mmHg
• Melting Point: 293 to 294.8 °F
• Flash Point: Not Applicable. Not flammable.
• Solubility: In water, 14.6 mg/L at 20 °C
• Density: 1.3 g/cm³
• Vapor Pressure: 20.94 mmHg at 220 °F
• Stability/Shelf Life: Stable to sunlight
• Autoignition Temperature: Not Applicable. Not flammable.
• Synonyms: 2,6-Dichlorobenzonitrile, dichlobenil, 1194-65-6, Benzonitrile, 2,6-dichloro-, Dichlobanil, Casoron, Casaron, DU-Sprex, Surfassol, Casoron 133, DBN (the herbicide), DBN (pesticide), 2,6-Dichlorophenyl cyanide, Niagara 5,996, 2,6-DBN, Cyclomec, Dyclomec, Norosac, Casoron gsr, Code H 133, Nia 5996, Casoron G-4, Carsoron, Casoron G-10, Casoron G20 SR, Casoron W-50, 2,6-Dichlorbenzonitril, 2,6-Dichlorobenzoic acid nitrile, Dichlobenil [ISO], Niagara 5006, H 133, 2,6-Dichlorbenzonitril [German], Casoron G, Casoron G4, BH Prefix D, CHEBI:943, DTXSID5032365, N42NR4196R, DICHLOBENIL [MI], DICHLOBENIL [HSDB], NSC-521490, DTXCID3012365, 2,6-Dichlorbenzonitril (German), 2.6-Dichlorobenzonitrile, Barrier, Fydulan, Fydumas, Fydusit, DUSprex, Casoron G10, Casoron W50, 2,6Dichlorbenzonitril, 2,6dichlorobenzonitrile, 2,6-Dichlorophenylcyanide, 2,6Dichlorophenyl cyanide, Benzonitrile, 2,6dichloro, NIAGARA 5996, 2,6DBN, 2,6-DICHLOROCYANOBENZENE, 2, 6-DICHLOROBENZONITRILE, 2, 6-DBN, USEPA/OPP Pesticide Code: 027401, 214-787-5, inchi=1/c7h3cl2n/c8-6-2-1-3-7(9)5(6)4-10/h1-3, Prefix D, MFCD00001781, NSC 521490, 2,6-dichloro-benzonitrile, 104809-79-2, H 1313, 2,6-DICHLOROBENZNITRILE, 2,6-dichlorobenzenecarbonitrile, Caswell No. 297, Dichlobenil [ANSI:BSI:ISO], CCRIS 1470, HSDB 312, EINECS 214-787-5, EPA Pesticide Chemical Code 027401, BRN 1909167, UNII-N42NR4196R, AI3-26665, (14-C)2,6-Dichlorobenzonitrile, Fyducit (Salt/Mix), Fydumas (Salt/Mix), Dichlobenil 10 microg/mL in Cyclohexane, Spectrum_001835, dichlobenil, dichlobanil, Dichlobenil 100 microg/mL in Cyclohexane, Fydulan G (Salt/Mix), SpecPlus_000436, Dichlobenil 100 microg/mL in Acetonitrile, Benzonitrile,6-dichloro-, Spectrum2_001886, Spectrum3_000828, Spectrum4_000668, Spectrum5_001968, WLN: NCR BG FG, EC 214-787-5, 2,4-Dbn, SCHEMBL55606, BSPBio_002355, KBioGR_001075, KBioSS_002340, SPECTRUM330036, DivK1c_006532, SPBio_001792, SCHEMBL7028222, CHEMBL3039332, SCHEMBL14660831, 2,6-Dichlorobenzonitrile, 97%, KBio1_001476, KBio2_002337, KBio2_004905, KBio2_007473, KBio3_001855, Tox21_300791, CCG-39424, CK1056, NSC521490, SBB041083, STK802216, AKOS000269672, FD64132, PS-5306, NCGC00094529-01, NCGC00094529-02, NCGC00094529-03, NCGC00094529-04, NCGC00094529-05, NCGC00094529-06, NCGC00254695-01, AC-10715, CAS-1194-65-6, DB-030805, CS-0014086, D1137, NS00002192, ST45027659, EN300-17699, Dichlobenil, PESTANAL(R), analytical standard, Q416231, BRD-K43714461-001-02-8, Z56989597

Application

Dichlobenil is primarily used as a herbicide for controlling a broad spectrum of weeds in non-crop areas such as roadsides, railways, and industrial sites. It is also applied in ornamental plant nurseries and forestry to manage unwanted vegetation. Researchers utilize Dichlobenil in studies involving herbicide resistance mechanisms and environmental fate analysis.

Safety and Hazards

GHS Hazard Statements

• H400: Very toxic to aquatic life [Warning Hazardous to the aquatic environment, acute hazard]
• H410: Very toxic to aquatic life with long lasting effects [Warning Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P273, P391, and P501

Hazard Classes and Categories

• Acute toxicity – Category 5
• Specific target organ toxicity – Repeated exposure – Category 2
• Hazardous to the aquatic environment – Category 2
• Hazardous to the aquatic environment – Category 2

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