2,4-Dichlorophenol

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  • Identifiers

    CAS number
    120-83-2

    Molecular formula
    C6H4Cl2O

    SMILES
    C1=CC(=C(C=C1Cl)Cl)O

    Safety labels

    Corrosive
    Corrosive

    Acute Toxic
    Acute Toxic

    Environmental Hazard
    Environmental

  • Odor profile

    Phenolic 67.93%
    Smoky 44.98%
    Burnt 41.67%
    Medicinal 39.01%
    Spicy 36.87%
    Odorless 29.86%
    Sweet 28.41%
    Meaty 27.58%
    Woody 27.5%
    Vanilla 25.94%

    Scent© AI

    Odor threshold

    • Odor detection in water: 2.10X10-1 ppm (chemically pure)
    • In air: 0.21 ppm /Purity not specified/
    • Detection in water: 0.04 mg/L; 0.002 mg/l; 0.0003 mg/L /Purity not specified/
    • In air: low 1.4007 mg/cu m; high 1.4007 mg/cu m /Purity not specified/

  • Properties

    XLogP3-AA
    3.1

    pKa est.
    8.01 (weak base)

    Molecular weight
    163.0 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Moderately fast

    Melting point expt.

    • 113 °F (NTP, 1992)
    • 45 °C
    • 45.0 °C

    Boiling point

    • 410 °F at 760 mmHg (NTP, 1992)
    • 210 °C
    • 210.0 °C

    Flash point est.
    102.47 ˚C

    Flash point expt.

    • 237 °F (NTP, 1992)
    • 113 °C
    • 200 °F (open cup); 237 °F (closed cup)
    • 237 °F (114 °C) (open cup)
    • 113 °C o.c.

    Solubility expt.

    • less than 0.1 mg/mL at 64 °F (NTP, 1992)
    • Soluble in carbon tetrachloride
    • Soluble in ethanol, benzene, chloroform and ethyl ether.
    • Soluble in aqueous alkali, oxygenated and chlorinated solvents.
    • In water, 4.50X10+3 mg/L at 20 °C
    • 4.5 mg/mL at 20 °C
    • Solubility in water, g/100ml at 20 °C: 0.45 (poor)

  • Synonyms

    • 2,4-DICHLOROPHENOL
    • 120-83-2
    • Phenol, 2,4-dichloro-
    • 4,6-Dichlorophenol
    • 2,4-DCP
    • 2,4-dichloro-Phenol
    • 1-Hydroxy-2,4-dichlorobenzene
    • RCRA waste number U081
    • NCI-C55345
    • 2,4-Dichlorohydroxybenzene
    • NSC 2879
    • CCRIS 657
    • HSDB 1139
    • EINECS 204-429-6
    • BRN 0742467
    • 1,3-Dichloro-4-hydroxybenzene
    • 2,4-Dichlorophenate
    • DTXSID1020439
    • UNII-R669TG1950
    • CHEBI:16738
    • AI3-00078
    • NSC-2879
    • 2,4-Dichlorophenic acid
    • MFCD00002169
    • R669TG1950
    • DTXCID70439
    • 2,4-DICHLOROPHENOL [MI]
    • EC 204-429-6
    • 2,4-DICHLOROPHENOL [HSDB]
    • 4-06-00-00885 (Beilstein Handbook Reference)
    • 2,4-DICHLOROPHENOL [USP-RS]
    • Phen-3,5-d2-ol-d, 2,4-dichloro- (9CI)
    • 2,4-DICHLOROPHENOL (USP-RS)
    • CAS-120-83-2
    • 2,4-Dichlorophenol 100 microg/mL in Methanol
    • RCRA waste no. U081
    • 4,6Dichlorophenol
    • 5JC
    • 2,4-Dichlorphenol
    • 2,4-dichlorophenoxy
    • 2,4,-dichlorophenol
    • 2,4-dichloro phenol
    • Phenol, 2,4dichloro
    • 2,4Dichlorohydroxybenzene
    • 24-DICHLOROPHENOL
    • WLN: QR BG DG
    • 1Hydroxy2,4dichlorobenzene
    • bmse000691
    • CHEMBL1143
    • SCHEMBL77936
    • 2,4-Dichlorophenol, 99%
    • BIDD:ER0024
    • 2,4DCP
    • NSC2879
    • DTXSID901315702
    • HMS3740M09
    • STR00302
    • Tox21_201589
    • Tox21_300040
    • 2,4-D TP1
    • AKOS000118751
    • MSK9305-1000M
    • CCG-272501
    • NCGC00091273-01
    • NCGC00091273-02
    • NCGC00091273-03
    • NCGC00091273-04
    • NCGC00253953-01
    • NCGC00259138-01
    • 3317-66-6
    • AC-11247
    • PD124041
    • D0392
    • D3865
    • NS00004912
    • 2,4-Dichlorophenol 10 microg/mL in Methanol
    • EN300-19384
    • C02625
    • 2,4-Dichlorophenol, purum, >=97.0% (HPLC)
    • Q209205
    • 2,4-Dichlorophenol Solution in Methanol, 1000ug/mL
    • 2,4-Dichlorophenol, PESTANAL(R), analytical standard
    • A13-00078
    • F1995-0250
    • Z104473682
    • 2,4-Dichlorophenol, certified reference material, TraceCERT(R)
    • 2,4-Dichlorophenol, United States Pharmacopeia (USP) Reference Standard
    • 204-429-6

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 49.34
    methanol 37.49
    isopropanol 37.45
    water 0.5
    ethyl acetate 42.58
    n-propanol 44.36
    acetone 51.35
    n-butanol 40.45
    acetonitrile 29.35
    DMF 68.88
    toluene 13.03
    isobutanol 31.02
    1,4-dioxane 77.7
    methyl acetate 74.86
    THF 141.95
    2-butanone 87.37
    n-pentanol 44.42
    sec-butanol 59.43
    n-hexane 1.9
    ethylene glycol 12.45
    NMP 41.0
    cyclohexane 1.18
    DMSO 31.14
    n-butyl acetate 60.44
    n-octanol 44.85
    chloroform 29.43
    n-propyl acetate 57.53
    acetic acid 32.76
    dichloromethane 24.1
    cyclohexanone 37.7
    propylene glycol 16.02
    isopropyl acetate 37.4
    DMAc 134.32
    2-ethoxyethanol 98.54
    isopentanol 45.84
    n-heptane 5.82
    ethyl formate 29.83
    1,2-dichloroethane 18.01
    n-hexanol 51.58
    2-methoxyethanol 95.27
    isobutyl acetate 38.25
    tetrachloromethane 7.52
    n-pentyl acetate 49.02
    transcutol 252.57
    n-heptanol 41.47
    ethylbenzene 22.25
    MIBK 43.81
    2-propoxyethanol 100.23
    tert-butanol 64.71
    MTBE 81.2
    2-butoxyethanol 83.17
    propionic acid 23.93
    o-xylene 18.22
    formic acid 17.95
    diethyl ether 42.03
    m-xylene 14.38
    p-xylene 26.66
    chlorobenzene 11.64
    dimethyl carbonate 19.46
    n-octane 3.56
    formamide 42.89
    cyclopentanone 53.55
    2-pentanone 45.96
    anisole 76.76
    cyclopentyl methyl ether 40.04
    gamma-butyrolactone 51.52
    1-methoxy-2-propanol 72.79
    pyridine 48.95
    3-pentanone 35.73
    furfural 62.23
    n-dodecane 4.05
    diethylene glycol 65.34
    diisopropyl ether 18.49
    tert-amyl alcohol 90.3
    acetylacetone 54.69
    n-hexadecane 4.36
    acetophenone 58.11
    methyl propionate 35.23
    isopentyl acetate 67.24
    trichloroethylene 50.49
    n-nonanol 41.8
    cyclohexanol 24.02
    benzyl alcohol 45.42
    2-ethylhexanol 43.08
    isooctanol 38.1
    dipropyl ether 39.55
    1,2-dichlorobenzene 14.68
    ethyl lactate 29.74
    propylene carbonate 29.9
    n-methylformamide 35.47
    2-pentanol 37.77
    n-pentane 1.69
    1-propoxy-2-propanol 75.79
    1-methoxy-2-propyl acetate 65.99
    2-(2-methoxypropoxy) propanol 93.47
    mesitylene 10.75
    ε-caprolactone 49.87
    p-cymene 24.43
    epichlorohydrin 85.44
    1,1,1-trichloroethane 25.89
    2-aminoethanol 28.54
    morpholine-4-carbaldehyde 81.34
    sulfolane 36.55
    2,2,4-trimethylpentane 3.96
    2-methyltetrahydrofuran 84.77
    n-hexyl acetate 61.21
    isooctane 3.09
    2-(2-butoxyethoxy)ethanol 112.49
    sec-butyl acetate 47.3
    tert-butyl acetate 64.35
    decalin 3.33
    glycerin 25.29
    diglyme 206.17
    acrylic acid 20.62
    isopropyl myristate 34.26
    n-butyric acid 29.34
    acetyl acetate 26.6
    di(2-ethylhexyl) phthalate 27.31
    ethyl propionate 40.16
    nitromethane 61.46
    1,2-diethoxyethane 100.61
    benzonitrile 34.99
    trioctyl phosphate 21.49
    1-bromopropane 13.57
    gamma-valerolactone 78.45
    n-decanol 32.73
    triethyl phosphate 27.4
    4-methyl-2-pentanol 32.43
    propionitrile 29.86
    vinylene carbonate 28.37
    1,1,2-trichlorotrifluoroethane 65.25
    DMS 37.86
    cumene 20.99
    2-octanol 35.54
    2-hexanone 66.87
    octyl acetate 39.35
    limonene 27.98
    1,2-dimethoxyethane 159.29
    ethyl orthosilicate 30.12
    tributyl phosphate 24.05
    diacetone alcohol 83.71
    N,N-dimethylaniline 57.96
    acrylonitrile 34.03
    aniline 25.73
    1,3-propanediol 40.1
    bromobenzene 9.4
    dibromomethane 13.45
    1,1,2,2-tetrachloroethane 35.06
    2-methyl-cyclohexyl acetate 50.68
    tetrabutyl urea 37.01
    diisobutyl methanol 31.71
    2-phenylethanol 57.97
    styrene 20.53
    dioctyl adipate 42.72
    dimethyl sulfate 25.52
    ethyl butyrate 49.63
    methyl lactate 25.15
    butyl lactate 40.12
    diethyl carbonate 32.54
    propanediol butyl ether 68.46
    triethyl orthoformate 38.79
    p-tert-butyltoluene 25.94
    methyl 4-tert-butylbenzoate 62.11
    morpholine 92.99
    tert-butylamine 37.59
    n-dodecanol 25.73
    dimethoxymethane 69.36
    ethylene carbonate 20.35
    cyrene 65.18
    2-ethoxyethyl acetate 70.35
    2-ethylhexyl acetate 52.48
    1,2,4-trichlorobenzene 21.28
    4-methylpyridine 46.34
    dibutyl ether 49.12
    2,6-dimethyl-4-heptanol 31.71
    DEF 52.1
    dimethyl isosorbide 136.83
    tetrachloroethylene 25.27
    eugenol 76.89
    triacetin 57.02
    span 80 58.69
    1,4-butanediol 22.26
    1,1-dichloroethane 19.18
    2-methyl-1-pentanol 55.39
    methyl formate 28.45
    2-methyl-1-butanol 44.7
    n-decane 6.01
    butyronitrile 31.1
    3,7-dimethyl-1-octanol 47.38
    1-chlorooctane 21.53
    1-chlorotetradecane 10.45
    n-nonane 5.27
    undecane 4.89
    tert-butylcyclohexane 5.12
    cyclooctane 0.99
    cyclopentanol 27.25
    tetrahydropyran 51.46
    tert-amyl methyl ether 74.48
    2,5,8-trioxanonane 148.72
    1-hexene 13.11
    2-isopropoxyethanol 85.37
    2,2,2-trifluoroethanol 20.39
    methyl butyrate 52.5

    Scent© AI

1 4

IFRA standard 51

Recommendation
No restriction
Maximum acceptable concentrations in the finished product (%)
Category 1
Products applied to the lips
 No restriction Category 7A
Rinse-off products applied to the hair with some hand contact
 No restriction
Category 2
Products applied to the axillae
 No restriction Category 7B
Leave-on products applied to the hair with some hand contact
 No restriction
Category 3
Products applied to the face/body using fingertips
 No restriction Category 8
Products with significant anogenital exposure
 No restriction
Category 4
Products related to fine fragrance
 No restriction Category 9
Products with body and hand exposure, primarily rinse off
 No restriction
Category 5A
Body lotion products applied to the body using the hands (palms), primarily leave on
 No restriction Category 10A
Household care products with mostly hand contact
 No restriction
Category 5B
Face moisturizer products applied to the face using the hands (palms), primarily leave on
 No restriction Category 10B
Household care products with mostly hand contact, including aerosol/spray products (with potential leave-on skin contact)
 No restriction
Category 5C
Hand cream products applied to the hands using the hands (palms), primarily leave on
 No restriction Category 11A
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate without UV exposure
 No restriction
Category 5D
Baby Creams, baby Oils and baby talc
 No restriction Category 11B
Products with intended skin contact but minimal transfer of fragrance to skin from inert substrate with potential UV exposure
 No restriction
Category 6
Products with oral and lip exposure
 No restriction Category 12
Products not intended for direct skin contact, minimal or insignificant transfer to skin
 No restriction