Description

2,5-Dichlorophenol (CAS 583-78-8) is a high-purity chlorinated phenolic compound with the molecular formula C₆H₄Cl₂O. This crystalline solid is widely utilized in organic synthesis, agrochemical production, and as a precursor for specialty chemicals. Our product is rigorously tested to ensure ≥98% purity (GC) with minimal impurities, making it ideal for demanding research and industrial applications. It is supplied in tightly sealed amber glass bottles under inert atmosphere to ensure stability and longevity.

Key specifications include: molecular weight of 163.00 g/mol, melting point of 56-59°C, and boiling point of 211-212°C. The compound exhibits limited solubility in water but dissolves readily in organic solvents like ethanol, ether, and benzene. Suitable for use under dry, cool conditions with proper ventilation due to its potential volatility at elevated temperatures.

Properties

• CAS Number: 583-78-8
• Complexity: 97.1
• IUPAC Name: 2,5-dichlorophenol
• InChI: InChI=1S/C6H4Cl2O/c7-4-1-2-5(8)6(9)3-4/h1-3,9H
• InChI Key: RANCECPPZPIPNO-UHFFFAOYSA-N
• LogP: log Kow = 3.06
• Exact Mass: 161.9639201
• Molecular Formula: C6H4Cl2O
• Molecular Weight: 163.00
• SMILES: C1=CC(=C(C=C1Cl)O)Cl
• Topological: 20.2
• Monoisotopic Mass: 161.9639201
• Physical Description: Prisms or white crystals. Odor threshold 30 micrograms/liter at 68-72 °F; 33 micrograms/liter at 86 °F. Taste threshold 0.5 micrograms/liter.
• Color/Form: Prisms from benzene and petroleum ether
• Taste: Taste Threshold in water – 0.5 ug/l.
• Boiling Point: 412 °F at 760 mmHg
• Melting Point: 133 to 136 °F
• Solubility: less than 1 mg/mL at 68 °F
• Density: Relative density of the vapour/air-mixture at 20 °C : 1.00
• Vapor Density: Relative vapor density : 5.6
• Vapor Pressure: 0.06 [mmHg]
• Odor Threshold: In water 33 ug/L at 30 °C.
• Dissociation Constants: pKa = 7.51
• Synonyms: 2,5-dichlorophenol, Phenol, 2,5-dichloro-, 2,5-DCP, 3,6-dichlorophenol, CCRIS 5903, HSDB 4287, UNII-3B11G9AKBA, NSC 6296, EINECS 209-520-4, 3B11G9AKBA, BRN 1907692, DTXSID7025003, CHEBI:27929, NSC-6296, DICHLOROPHENOL, 2,5-, DTXCID705003, EC 209-520-4, 2,5-DICHLOROPHENOL [HSDB], 4-06-00-00942 (Beilstein Handbook Reference), Phenol, 2,5dichloro, 1Hydroxy2,5dichlorobenzene, 2,5-Dichlorohydroxybenzene, 1-Hydroxy-2,5-dichlorobenzene, 2,5DCP, 209-520-4, inchi=1/c6h4cl2o/c7-4-1-2-5(8)6(9)3-4/h1-3,9, rancecppzpipno-uhfffaoysa-n, un2020, 583-78-8, 2,5-dichloro-phenol, MFCD00002174, CAS-583-78-8, Phenol, 2,5-dichloro-; 2,5-Dichlorophenol; NSC 6296, bmse000673, 2,5-Dichlorophenol, 98%, BIDD:ER0560, SCHEMBL177878, SCHEMBL1045503, SCHEMBL6095909, CHEMBL1565192, SCHEMBL28554081, NSC6296, Tox21_201889, Tox21_303053, SBB061453, STL283946, AKOS000120929, 2,5-Dichlorophenol (ACD/Name 4.0), CS-W004071, NCGC00091138-01, NCGC00091138-02, NCGC00091138-03, NCGC00257078-01, NCGC00259438-01, AC-10424, DB-053197, D0393, NS00008731, ST50824836, 2,5-Dichlorophenol 10 microg/mL in Methanol, EN300-20748, 2,5-Dichlorophenol 100 microg/mL in Methanol, A10797, C06602, 2,5-Dichlorophenol, PESTANAL(R), analytical standard, Q13427538, F0001-1524, Z104480932

Application

2,5-Dichlorophenol serves as a critical intermediate in the synthesis of herbicides, fungicides, and dyes. It is employed in pharmaceutical research for developing antimicrobial agents and in material science for modifying polymer properties. The compound also finds use as a preservative in industrial applications and as a reagent in analytical chemistry for phenol detection methods.

Safety and Hazards

GHS Hazard Statements

• H335: May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H371: May cause damage to organs [Warning Specific target organ toxicity, single exposure]
• H372: Causes damage to organs through prolonged or repeated exposure [Danger Specific target organ toxicity, repeated exposure]
• H401: Toxic to aquatic life [Hazardous to the aquatic environment, acute hazard]
• H411: Toxic to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P260, P261, P264, P270, P271, P273, P304+P340, P308+P316, P319, P391, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 4 (98.9%)
• Skin Corr. 1B (36%)
• Skin Irrit. 2 (62.9%)
• Eye Dam. 1 (15.1%)
• Eye Irrit. 2A (62.9%)
• Aquatic Chronic 2 (61.3%)

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