Mequinol

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  • Identifiers

    CAS number
    150-76-5

    Molecular formula
    C7H8O2

    SMILES
    COC1=CC=C(C=C1)O

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Sweet 90.99%
    Phenolic 85.04%
    Medicinal 59.88%
    Vanilla 56.46%
    Nutty 54.07%
    Smoky 51.89%
    Anisic 46.45%
    Aromatic 40.24%
    Woody 40.17%
    Musty 39.59%

    Scent© AI

  • Properties

    XLogP3-AA
    1.3

    pKa est.
    9.07 (weak base)

    Molecular weight
    124.14 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Melting point expt.

    • 126.5 °F (NTP, 1992)
    • 54 °C
    • 53 °C
    • 57 °C
    • 126.5 °F
    • 135 °F

    Boiling point

    • 475 °F at 760 mmHg (NTP, 1992)
    • 253 °C
    • 243.00 to 245.00 °C. @ 760.00 mm Hg
    • 243 °C
    • 469 °F

    Flash point est.
    100.49 ˚C

    Flash point expt.

    • 269.6 °F (NTP, 1992)
    • 132 °C
    • 270 °F (132 °C) (Open Cup)
    • 132 °C o.c.
    • 270 °F (open cup)
    • (oc) 270 °F

    Solubility expt.

    • Soluble (NTP, 1992)
    • In water, 19,500 mg/L at 25 °C
    • In water, 40,000 mg/L at 25 °C
    • Soluble in benzene, carbon tetrachloride; very soluble in ethanol, ether
    • Readily soluble in acetone and ethyl acetate.
    • 40 mg/mL at 25 °C
    • Solubility in water, g/100ml at 25 °C: 4
    • (77 °F): 4%

  • Synonyms

    • 4-Methoxyphenol
    • Mequinol
    • 150-76-5
    • 4-Hydroxyanisole
    • p-Hydroxyanisole
    • p-Methoxyphenol
    • Phenol, 4-methoxy-
    • HYDROQUINONE MONOMETHYL ETHER
    • MEHQ
    • Leucobasal
    • Leucodine B
    • Mechinolum
    • P-Guaiacol
    • Novo-Dermoquinona
    • Hydroquinone methyl ether
    • HQMME
    • p-Hydroxymethoxybenzene
    • para-methoxyphenol
    • 1-Hydroxy-4-methoxybenzene
    • Monomethyl ether hydroquinone
    • PMF (antioxidant)
    • Phenol, p-methoxy-
    • USAF AN-7
    • 4-Methoxy-phenol
    • Mechinolo
    • Mequinolum
    • Mono methyl ether hydroquinone
    • NSC 4960
    • MFCD00002332
    • CCRIS 5531
    • BMS 181158
    • BMS-181158
    • DTXSID4020828
    • HSDB 4258
    • UNII-6HT8U7K3AM
    • NSC-4960
    • EINECS 205-769-8
    • 6HT8U7K3AM
    • AI3-00841
    • NSC4960
    • DTXCID60828
    • SOLAGE COMPONENT MEQUINOL
    • CHEBI:69441
    • EC 205-769-8
    • Mequinol (INN)
    • NCGC00091390-02
    • MEQUINOL [INN]
    • MEQUINOL (MART.)
    • MEQUINOL [MART.]
    • Mechinolo [DCIT]
    • Mequinolum [INN-Latin]
    • CAS-150-76-5
    • Mequinol [USAN:INN:DCF]
    • 4methoxyphenol
    • paramethoxyphenol
    • p- methoxyphenol
    • p-methoxy phenol
    • p-methoxy-phenol
    • 4-methoxy phenol
    • Eastman HQMME
    • para-hydroxyanisole
    • 4-(methoxy)phenol
    • 4KS
    • O-methylhydroquinone
    • para- hydroxyanisole
    • Mequinol (Standard)
    • 4-(methyloxy)phenol
    • HQME
    • hydroquinone methylether
    • MEQUINOL [HSDB]
    • MEQUINOL [USAN]
    • Mequinol (USAN/INN)
    • Mequinol, INN, USAN
    • MEQUINOL [VANDF]
    • PHENOL,4-METHOXY
    • hydroxyquinone methyl ether
    • hydroquinone monomethylether
    • CHEMBL544
    • MEQUINOL [WHO-DD]
    • NCIMech_000709
    • WLN: QR DO1
    • SCHEMBL21009
    • hydroquinone mono methyl ether
    • MLS002454409
    • MEQUINOL [ORANGE BOOK]
    • GTPL6827
    • SCHEMBL12015251
    • BDBM36295
    • D11AX06
    • HMS2270F04
    • HMS3264P13
    • HMS3652O08
    • Pharmakon1600-00212037
    • MEQUINOL COMPONENT OF SOLAGE
    • 4-Methoxyphenol, analytical standard
    • Tox21_111125
    • Tox21_202367
    • Tox21_302876
    • CCG-35855
    • HY-30270R
    • NSC760357
    • STL199145
    • AKOS000119852
    • Tox21_111125_1
    • AC-3292
    • CS-W019963
    • DB09516
    • FH24308
    • NSC-760357
    • PS-3375
    • SB40551
    • 4-Methoxyphenol, ReagentPlus(R), 99%
    • NCGC00091390-01
    • NCGC00091390-03
    • NCGC00091390-04
    • NCGC00256552-01
    • NCGC00259916-01
    • BP-23487
    • HQMME; HYDROXYQUINONE METHYL ETHER
    • HY-30270
    • NCI60_004190
    • SMR001252253
    • DB-003965
    • M0123
    • NS00010661
    • S4077
    • SW219760-1
    • 4-Methoxyphenol, purum, >=98.0% (HPLC)

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 601.3
    methanol 525.51
    isopropanol 374.44
    water 5.42
    ethyl acetate 623.68
    n-propanol 429.25
    acetone 409.11
    n-butanol 315.4
    acetonitrile 743.14
    DMF 285.92
    toluene 79.66
    isobutanol 254.29
    1,4-dioxane 1255.52
    methyl acetate 662.83
    THF 982.48
    2-butanone 420.92
    n-pentanol 191.61
    sec-butanol 297.99
    n-hexane 10.93
    ethylene glycol 170.96
    NMP 220.85
    cyclohexane 32.05
    DMSO 615.94
    n-butyl acetate 173.24
    n-octanol 105.2
    chloroform 526.92
    n-propyl acetate 217.82
    acetic acid 432.01
    dichloromethane 888.46
    cyclohexanone 280.97
    propylene glycol 152.23
    isopropyl acetate 196.71
    DMAc 359.15
    2-ethoxyethanol 437.89
    isopentanol 211.42
    n-heptane 28.74
    ethyl formate 358.04
    1,2-dichloroethane 436.05
    n-hexanol 163.2
    2-methoxyethanol 670.86
    isobutyl acetate 93.09
    tetrachloromethane 82.08
    n-pentyl acetate 93.93
    transcutol 865.53
    n-heptanol 89.66
    ethylbenzene 43.55
    MIBK 119.3
    2-propoxyethanol 305.57
    tert-butanol 474.83
    MTBE 325.57
    2-butoxyethanol 175.49
    propionic acid 332.18
    o-xylene 58.35
    formic acid 217.4
    diethyl ether 460.92
    m-xylene 51.2
    p-xylene 58.45
    chlorobenzene 113.28
    dimethyl carbonate 152.78
    n-octane 11.42
    formamide 507.58
    cyclopentanone 389.37
    2-pentanone 250.71
    anisole 197.09
    cyclopentyl methyl ether 279.65
    gamma-butyrolactone 576.41
    1-methoxy-2-propanol 344.38
    pyridine 415.57
    3-pentanone 207.38
    furfural 396.64
    n-dodecane 11.92
    diethylene glycol 267.54
    diisopropyl ether 79.28
    tert-amyl alcohol 329.09
    acetylacetone 281.29
    n-hexadecane 12.71
    acetophenone 134.45
    methyl propionate 367.01
    isopentyl acetate 127.88
    trichloroethylene 579.72
    n-nonanol 91.7
    cyclohexanol 189.83
    benzyl alcohol 127.21
    2-ethylhexanol 93.78
    isooctanol 65.69
    dipropyl ether 165.97
    1,2-dichlorobenzene 98.02
    ethyl lactate 83.83
    propylene carbonate 241.07
    n-methylformamide 350.82
    2-pentanol 176.6
    n-pentane 19.53
    1-propoxy-2-propanol 175.83
    1-methoxy-2-propyl acetate 182.89
    2-(2-methoxypropoxy) propanol 176.29
    mesitylene 32.04
    ε-caprolactone 306.28
    p-cymene 42.12
    epichlorohydrin 837.55
    1,1,1-trichloroethane 296.04
    2-aminoethanol 285.76
    morpholine-4-carbaldehyde 493.6
    sulfolane 416.25
    2,2,4-trimethylpentane 12.72
    2-methyltetrahydrofuran 648.77
    n-hexyl acetate 144.65
    isooctane 8.75
    2-(2-butoxyethoxy)ethanol 264.62
    sec-butyl acetate 119.68
    tert-butyl acetate 182.86
    decalin 14.2
    glycerin 196.28
    diglyme 537.46
    acrylic acid 242.25
    isopropyl myristate 67.44
    n-butyric acid 341.06
    acetyl acetate 292.83
    di(2-ethylhexyl) phthalate 55.64
    ethyl propionate 190.56
    nitromethane 819.02
    1,2-diethoxyethane 332.51
    benzonitrile 146.95
    trioctyl phosphate 44.33
    1-bromopropane 224.42
    gamma-valerolactone 515.8
    n-decanol 68.28
    triethyl phosphate 81.79
    4-methyl-2-pentanol 79.72
    propionitrile 412.29
    vinylene carbonate 226.6
    1,1,2-trichlorotrifluoroethane 307.86
    DMS 132.88
    cumene 33.43
    2-octanol 58.57
    2-hexanone 159.84
    octyl acetate 86.68
    limonene 62.51
    1,2-dimethoxyethane 625.65
    ethyl orthosilicate 81.02
    tributyl phosphate 59.18
    diacetone alcohol 189.18
    N,N-dimethylaniline 96.33
    acrylonitrile 431.54
    aniline 156.81
    1,3-propanediol 378.57
    bromobenzene 104.55
    dibromomethane 419.64
    1,1,2,2-tetrachloroethane 342.52
    2-methyl-cyclohexyl acetate 104.15
    tetrabutyl urea 73.86
    diisobutyl methanol 57.32
    2-phenylethanol 113.35
    styrene 58.8
    dioctyl adipate 103.42
    dimethyl sulfate 168.29
    ethyl butyrate 179.16
    methyl lactate 117.66
    butyl lactate 65.33
    diethyl carbonate 138.15
    propanediol butyl ether 132.19
    triethyl orthoformate 120.3
    p-tert-butyltoluene 40.15
    methyl 4-tert-butylbenzoate 116.19
    morpholine 1130.81
    tert-butylamine 246.09
    n-dodecanol 53.76
    dimethoxymethane 404.83
    ethylene carbonate 217.25
    cyrene 149.09
    2-ethoxyethyl acetate 175.77
    2-ethylhexyl acetate 100.0
    1,2,4-trichlorobenzene 122.77
    4-methylpyridine 257.71
    dibutyl ether 133.95
    2,6-dimethyl-4-heptanol 57.32
    DEF 287.22
    dimethyl isosorbide 294.89
    tetrachloroethylene 219.68
    eugenol 116.1
    triacetin 164.61
    span 80 127.43
    1,4-butanediol 128.49
    1,1-dichloroethane 376.44
    2-methyl-1-pentanol 142.59
    methyl formate 285.11
    2-methyl-1-butanol 201.82
    n-decane 18.42
    butyronitrile 316.03
    3,7-dimethyl-1-octanol 87.61
    1-chlorooctane 60.09
    1-chlorotetradecane 27.8
    n-nonane 17.38
    undecane 14.33
    tert-butylcyclohexane 13.58
    cyclooctane 10.99
    cyclopentanol 244.27
    tetrahydropyran 692.53
    tert-amyl methyl ether 207.31
    2,5,8-trioxanonane 384.12
    1-hexene 46.87
    2-isopropoxyethanol 235.76
    2,2,2-trifluoroethanol 163.2
    methyl butyrate 238.45

    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

Botanical

Name CAS Botanical Proportion
Kaempferia galanga rhizome (Malaysia) Kaempferia galanga L. (Alpinia sessilis Kon.), fam. Zingiberaceae 0.01%
Agarwood smoke 1 Aquilaria agallocha Roxb., fam. Thymelaeaceae 0.01%
Agarwood smoke 2 Aquilaria agallocha Roxb., fam. Thymelaeaceae 0.79%