C.I. Solvent Red 80

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  • Identifiers

    CAS number
    6358-53-8

    Molecular formula
    C18H16N2O3

    SMILES
    COC1=CC(=C(C=C1)OC)N=NC2=C(C=CC3=CC=CC=C32)O

    Safety labels

    Health Hazard
    Health

  • Odor profile

    Fragrance
    Sweet 51.47%
    Floral 49.7%
    Vanilla 41.1%
    Spicy 36.65%
    Powdery 34.47%
    Fruity 30.48%
    Phenolic 27.82%
    Neroli 26.61%
    Balsamic 26.36%
    Grape 25.25%

     

    Flavor
    Bitter 91.46%
    Odorless 21.21%
    Parsley 19.58%
    Very strong 19.38%
    Lovage 19.28%
    Nitrile 19.22%
    Cedarleaf 19.19%
    Sweet-like 19.0%
    Indole 18.99%
    Bland 18.47%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    4.5

    pKa est.
    7.5 (neutral)

    Molecular weight
    308.3 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    519°C

    Melting point expt.

    • 311 to 315 °F (NTP, 1992)
    • 156 °C

    Flash point

    • 237.7 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 72 °F (NTP, 1992)
    • Partially soluble in ethanol and vegetable oils

  • Synonyms

    • 6358-53-8
    • C.I. Solvent Red 80
    • DTXSID6024838
    • DTXCID10809925
    • RefChem:1080572
    • CITRUS RED 2
    • Solvent red 80
    • 1-((2,5-Dimethoxyphenyl)diazenyl)naphthalen-2-ol
    • Citrus Red
    • Citrus Red No. 2
    • 1-[(2,5-dimethoxyphenyl)azo]-2-naphthol
    • 1-(2,5-Dimethoxyphenylazo)-2-naphthol
    • CI Solvent Red 80
    • Cerven rozpoustedlova 80
    • 1-(2,5-Dimethyloxyphenylazo)-2-naphthol
    • 1-[(2,5-dimethoxyphenyl)diazenyl]naphthalen-2-ol
    • 2,5-Dimethoxy-1-(phenylazo)-2-naphthol
    • C.I. 12156
    • 1-(1-(2,5-Dimethoxyphenyl)azo)-2-naphthol
    • 2,5-Dimethoxybenzeneazo-beta-naphthol
    • 1-((2,5-Dimethoxyphenyl)azo)-2-naphthalenol
    • Citrus Red No.2
    • 2,5-Dimethoxy-1-phenylazo-2-naphthol
    • 2-Naphthalenol, 1-[(2,5-dimethoxyphenyl)azo]-
    • CI 12156
    • 1-((2,5-Dimethoxyphenyl)azo)-2-naphthol
    • 2-Naphthol, 1-((2,5-dimethoxyphenyl)azo)-
    • 2-Naphthalenol, 1-((2,5-dimethoxyphenyl)azo)-
    • 2QE5Y68984
    • CCRIS 1875
    • HSDB 2948
    • 1-[(2,5-Dimethoxyphenyl)azo]-2-Naphthalenol
    • Cerven rozpoustedlova 80 [Czech]
    • EINECS 228-778-9
    • BRN 4510811
    • 2-Naphthol, 1-(2,5-dimethoxyphenylazo)-
    • UNII-2QE5Y68984
    • CITRUS RED 2 [MI]
    • CITRUS RED 2 [HSDB]
    • SCHEMBL1486044
    • SCHEMBL5363094
    • SCHEMBL9108481
    • CHEMBL3560990
    • CITRUS RED 2 [MART.]
    • SCHEMBL29912796
    • CHEBI:82306
    • MSK2466
    • C.I. Solvent red 80 (8CI)
    • CHEBI:229850
    • GJUABKCEXOMRPQ-FMQUCBEESA-N
    • GJUABKCEXOMRPQ-UHFFFAOYSA-N
    • Citrus Red 2, analytical standard
    • CITRUS RED NO. 2 [IARC]
    • Tox21_303891
    • AKOS003581987
    • AKOS028109059
    • 2,5-Dimethoxybenzeneazo-.beta.-naphthol
    • NCGC00357148-01
    • 1-(2,5-Dimethoxy-phenylazo)-2-naphthol
    • CAS-6358-53-8
    • DB-225996
    • CS-0853810
    • E-121
    • NS00020681
    • C19214
    • 1-[(2,5-Dimethoxyphenyl)diazenyl]-2-naphthol #
    • 358D538
    • 1-[(2,5-Dimethoxyphenyl)azo]-2-naphthalenol, 9CI
    • 1-[(E)-(2,5-Dimethoxyphenyl)diazenyl]-2-naphthol
    • Q2653981
    • 1-(2-(2,5-Dimethoxyphenyl)diazenyl)-2-Naphthalenol
    • 2-Naphthalenol, 1-(2-(2,5-dimethoxyphenyl)diazenyl)-
    • 6358-53-8

  • Applications

    C.I. Solvent Red 80, CAS 6358-53-8, is a solvent-soluble dye used as a colorant in solvent-based inks and coatings, a colorant for plastics and polymer formulations, an additive for adhesives and sealants, an intermediate in the synthesis of other dyes, and may be used as a processing aid or marker in industrial formulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2.37
    methanol 2.3
    isopropanol 2.07
    water 0.0
    ethyl acetate 25.43
    n-propanol 2.95
    acetone 22.57
    n-butanol 2.51
    acetonitrile 10.79
    DMF 19.71
    toluene 14.08
    isobutanol 1.82
    1,4-dioxane 58.81
    methyl acetate 28.74
    THF 172.63
    2-butanone 22.34
    n-pentanol 2.55
    sec-butanol 2.36
    n-hexane 0.58
    ethylene glycol 1.54
    NMP 14.55
    cyclohexane 1.22
    DMSO 98.48
    n-butyl acetate 12.39
    n-octanol 1.38
    chloroform 113.36
    n-propyl acetate 12.31
    acetic acid 17.83
    dichloromethane 161.63
    cyclohexanone 25.82
    propylene glycol 1.75
    isopropyl acetate 16.55
    DMAc 44.32
    2-ethoxyethanol 14.43
    isopentanol 3.0
    n-heptane 1.02
    ethyl formate 7.36
    1,2-dichloroethane 104.56
    n-hexanol 3.12
    2-methoxyethanol 21.28
    isobutyl acetate 8.39
    tetrachloromethane 5.6
    n-pentyl acetate 6.15
    transcutol 82.49
    n-heptanol 1.87
    ethylbenzene 5.94
    MIBK 10.89
    2-propoxyethanol 17.32
    tert-butanol 6.16
    MTBE 10.72
    2-butoxyethanol 8.11
    propionic acid 8.13
    o-xylene 6.48
    formic acid 4.21
    diethyl ether 15.33
    m-xylene 5.84
    p-xylene 7.34
    chlorobenzene 19.25
    dimethyl carbonate 23.32
    n-octane 0.45
    formamide 13.12
    cyclopentanone 45.65
    2-pentanone 13.07
    anisole 17.63
    cyclopentyl methyl ether 21.86
    gamma-butyrolactone 62.6
    1-methoxy-2-propanol 13.81
    pyridine 43.43
    3-pentanone 17.85
    furfural 54.73
    n-dodecane 0.42
    diethylene glycol 17.07
    diisopropyl ether 5.15
    tert-amyl alcohol 4.51
    acetylacetone 44.21
    n-hexadecane 0.51
    acetophenone 17.64
    methyl propionate 22.71
    isopentyl acetate 13.68
    trichloroethylene 195.54
    n-nonanol 1.93
    cyclohexanol 4.2
    benzyl alcohol 8.53
    2-ethylhexanol 3.5
    isooctanol 2.14
    dipropyl ether 11.91
    1,2-dichlorobenzene 21.56
    ethyl lactate 7.13
    propylene carbonate 20.56
    n-methylformamide 7.95
    2-pentanol 2.24
    n-pentane 0.4
    1-propoxy-2-propanol 12.07
    1-methoxy-2-propyl acetate 30.61
    2-(2-methoxypropoxy) propanol 18.13
    mesitylene 3.63
    ε-caprolactone 22.23
    p-cymene 4.64
    epichlorohydrin 142.52
    1,1,1-trichloroethane 50.64
    2-aminoethanol 2.63
    morpholine-4-carbaldehyde 35.5
    sulfolane 70.63
    2,2,4-trimethylpentane 0.52
    2-methyltetrahydrofuran 33.24
    n-hexyl acetate 6.49
    isooctane 0.37
    2-(2-butoxyethoxy)ethanol 20.17
    sec-butyl acetate 10.97
    tert-butyl acetate 23.58
    decalin 1.13
    glycerin 5.97
    diglyme 59.01
    acrylic acid 10.9
    isopropyl myristate 5.56
    n-butyric acid 8.92
    acetyl acetate 28.24
    di(2-ethylhexyl) phthalate 5.79
    ethyl propionate 16.08
    nitromethane 64.67
    1,2-diethoxyethane 32.05
    benzonitrile 10.44
    trioctyl phosphate 3.26
    1-bromopropane 20.68
    gamma-valerolactone 56.51
    n-decanol 1.73
    triethyl phosphate 12.91
    4-methyl-2-pentanol 2.35
    propionitrile 8.48
    vinylene carbonate 20.32
    1,1,2-trichlorotrifluoroethane 56.9
    DMS 22.63
    cumene 4.08
    2-octanol 1.27
    2-hexanone 10.64
    octyl acetate 5.27
    limonene 5.46
    1,2-dimethoxyethane 44.86
    ethyl orthosilicate 11.66
    tributyl phosphate 5.58
    diacetone alcohol 19.54
    N,N-dimethylaniline 11.53
    acrylonitrile 15.15
    aniline 12.27
    1,3-propanediol 5.36
    bromobenzene 25.12
    dibromomethane 68.54
    1,1,2,2-tetrachloroethane 115.04
    2-methyl-cyclohexyl acetate 14.08
    tetrabutyl urea 7.53
    diisobutyl methanol 3.98
    2-phenylethanol 10.18
    styrene 7.55
    dioctyl adipate 11.19
    dimethyl sulfate 41.14
    ethyl butyrate 14.93
    methyl lactate 10.12
    butyl lactate 5.62
    diethyl carbonate 14.45
    propanediol butyl ether 4.86
    triethyl orthoformate 14.49
    p-tert-butyltoluene 4.56
    methyl 4-tert-butylbenzoate 15.45
    morpholine 43.94
    tert-butylamine 3.12
    n-dodecanol 1.64
    dimethoxymethane 43.59
    ethylene carbonate 16.29
    cyrene 16.15
    2-ethoxyethyl acetate 18.51
    2-ethylhexyl acetate 10.43
    1,2,4-trichlorobenzene 29.38
    4-methylpyridine 20.75
    dibutyl ether 6.87
    2,6-dimethyl-4-heptanol 3.98
    DEF 16.28
    dimethyl isosorbide 48.36
    tetrachloroethylene 58.51
    eugenol 14.17
    triacetin 17.34
    span 80 9.71
    1,4-butanediol 1.67
    1,1-dichloroethane 40.84
    2-methyl-1-pentanol 3.52
    methyl formate 10.7
    2-methyl-1-butanol 2.41
    n-decane 0.61
    butyronitrile 4.66
    3,7-dimethyl-1-octanol 2.93
    1-chlorooctane 2.27
    1-chlorotetradecane 1.44
    n-nonane 0.48
    undecane 0.49
    tert-butylcyclohexane 0.95
    cyclooctane 0.57
    cyclopentanol 4.89
    tetrahydropyran 31.19
    tert-amyl methyl ether 9.07
    2,5,8-trioxanonane 45.59
    1-hexene 2.51
    2-isopropoxyethanol 10.31
    2,2,2-trifluoroethanol 8.15
    methyl butyrate 14.34

    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