HC Orange No. 2

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  • Identifiers

    CAS number
    85765-48-6

    Molecular formula
    C10H15N3O4

    SMILES
    C1=CC(=C(C=C1OCCO)[N+](=O)[O-])NCCN

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 59.92%
    Fishy 30.5%
    Savory 29.92%
    Meaty 24.71%
    Sweet 24.43%
    Animal 20.34%
    Milky 18.88%
    Cooked 18.17%
    Cooling 17.71%
    Cheesy 17.47%

     

    Flavor
    Odorless 55.72%
    Bitter 52.81%
    Mild 37.06%
    Bland 29.39%
    Sweet-like 23.84%
    Very mild 21.67%
    Fruity 20.96%
    Orange flower 20.47%
    Faint 20.09%
    Yeast 19.78%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.6

    pKa est.
    8.91 (weak base)

    Molecular weight
    241.24 g/mol

    Flash point

    • 227.47 ˚C est.

  • Synonyms

    • HC Orange no. 2
    • Imexine FAB
    • HC Orange 2
    • 2-(4-((2-Aminoethyl)amino)-3-nitrophenoxy)ethanol
    • UNII-86WS98470U
    • 86WS98470U
    • Ethanol, 2-(4-((2-aminoethyl)amino)-3-nitrophenoxy)-
    • DTXSID30235065
    • RefChem:145370
    • DTXCID30157556
    • HC ORANGE NO. 2 [INCI]
    • 85765-48-6
    • SCHEMBL453212
    • SCHEMBL29516812
    • WXGKXLXGYOYZMX-UHFFFAOYSA-N
    • Q27269767
    • 2-{4-[(2-Aminoethyl)amino]-3-nitrophenoxy}ethan-1-ol
    • 85765-48-6

  • Applications

    HC Orange No. 2 (CAS 85765-48-6) is a synthetic azo dye/colorant that may also serve as an intermediate in pigment synthesis. Common applications include textile dyeing and printing; coatings and industrial inks; coloration of plastics and polymers; use as a dye intermediate in pigment manufacture; and occasional use as a colorimetric indicator in analytical reagents for laboratory work.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 8.57
    methanol 25.49
    isopropanol 3.16
    water 8.17
    ethyl acetate 12.69
    n-propanol 4.36
    acetone 28.43
    n-butanol 3.4
    acetonitrile 13.21
    DMF 174.15
    toluene 1.67
    isobutanol 3.04
    1,4-dioxane 8.09
    methyl acetate 14.39
    THF 21.44
    2-butanone 11.77
    n-pentanol 3.64
    sec-butanol 2.64
    n-hexane 0.07
    ethylene glycol 32.27
    NMP 221.14
    cyclohexane 0.17
    DMSO 539.12
    n-butyl acetate 7.03
    n-octanol 1.26
    chloroform 4.34
    n-propyl acetate 6.84
    acetic acid 107.1
    dichloromethane 11.49
    cyclohexanone 26.32
    propylene glycol 20.81
    isopropyl acetate 6.73
    DMAc 251.73
    2-ethoxyethanol 33.14
    isopentanol 4.26
    n-heptane 0.14
    ethyl formate 19.15
    1,2-dichloroethane 11.17
    n-hexanol 3.31
    2-methoxyethanol 67.13
    isobutyl acetate 3.67
    tetrachloromethane 1.12
    n-pentyl acetate 3.03
    transcutol 58.71
    n-heptanol 1.94
    ethylbenzene 1.27
    MIBK 6.31
    2-propoxyethanol 21.54
    tert-butanol 5.98
    MTBE 2.3
    2-butoxyethanol 10.62
    propionic acid 23.07
    o-xylene 2.54
    formic acid 184.66
    diethyl ether 1.34
    m-xylene 2.05
    p-xylene 1.95
    chlorobenzene 3.17
    dimethyl carbonate 19.95
    n-octane 0.07
    formamide 201.82
    cyclopentanone 45.15
    2-pentanone 9.02
    anisole 5.39
    cyclopentyl methyl ether 5.6
    gamma-butyrolactone 80.03
    1-methoxy-2-propanol 31.26
    pyridine 12.81
    3-pentanone 7.11
    furfural 87.32
    n-dodecane 0.07
    diethylene glycol 50.17
    diisopropyl ether 0.76
    tert-amyl alcohol 5.23
    acetylacetone 33.63
    n-hexadecane 0.08
    acetophenone 14.53
    methyl propionate 16.61
    isopentyl acetate 7.24
    trichloroethylene 21.57
    n-nonanol 1.44
    cyclohexanol 4.31
    benzyl alcohol 11.59
    2-ethylhexanol 2.61
    isooctanol 1.89
    dipropyl ether 1.99
    1,2-dichlorobenzene 4.85
    ethyl lactate 16.05
    propylene carbonate 39.32
    n-methylformamide 78.21
    2-pentanol 1.57
    n-pentane 0.07
    1-propoxy-2-propanol 12.59
    1-methoxy-2-propyl acetate 16.84
    2-(2-methoxypropoxy) propanol 19.18
    mesitylene 1.56
    ε-caprolactone 26.79
    p-cymene 1.98
    epichlorohydrin 43.12
    1,1,1-trichloroethane 4.47
    2-aminoethanol 25.55
    morpholine-4-carbaldehyde 96.89
    sulfolane 183.78
    2,2,4-trimethylpentane 0.11
    2-methyltetrahydrofuran 8.75
    n-hexyl acetate 3.7
    isooctane 0.07
    2-(2-butoxyethoxy)ethanol 19.76
    sec-butyl acetate 4.12
    tert-butyl acetate 8.27
    decalin 0.2
    glycerin 74.59
    diglyme 38.75
    acrylic acid 40.79
    isopropyl myristate 1.9
    n-butyric acid 20.71
    acetyl acetate 18.52
    di(2-ethylhexyl) phthalate 5.91
    ethyl propionate 7.18
    nitromethane 172.91
    1,2-diethoxyethane 6.05
    benzonitrile 8.92
    trioctyl phosphate 3.57
    1-bromopropane 1.48
    gamma-valerolactone 78.76
    n-decanol 1.19
    triethyl phosphate 8.72
    4-methyl-2-pentanol 1.71
    propionitrile 5.64
    vinylene carbonate 36.46
    1,1,2-trichlorotrifluoroethane 86.02
    DMS 13.03
    cumene 1.33
    2-octanol 0.89
    2-hexanone 5.71
    octyl acetate 2.76
    limonene 2.31
    1,2-dimethoxyethane 29.47
    ethyl orthosilicate 6.58
    tributyl phosphate 4.75
    diacetone alcohol 22.04
    N,N-dimethylaniline 6.02
    acrylonitrile 16.22
    aniline 6.42
    1,3-propanediol 27.3
    bromobenzene 2.62
    dibromomethane 4.23
    1,1,2,2-tetrachloroethane 15.05
    2-methyl-cyclohexyl acetate 8.56
    tetrabutyl urea 8.28
    diisobutyl methanol 1.77
    2-phenylethanol 9.3
    styrene 1.44
    dioctyl adipate 6.11
    dimethyl sulfate 79.62
    ethyl butyrate 7.8
    methyl lactate 38.19
    butyl lactate 7.92
    diethyl carbonate 8.2
    propanediol butyl ether 12.84
    triethyl orthoformate 6.59
    p-tert-butyltoluene 1.73
    methyl 4-tert-butylbenzoate 13.7
    morpholine 14.16
    tert-butylamine 1.67
    n-dodecanol 0.96
    dimethoxymethane 29.45
    ethylene carbonate 25.57
    cyrene 38.99
    2-ethoxyethyl acetate 8.24
    2-ethylhexyl acetate 4.77
    1,2,4-trichlorobenzene 7.99
    4-methylpyridine 12.12
    dibutyl ether 1.08
    2,6-dimethyl-4-heptanol 1.77
    DEF 28.98
    dimethyl isosorbide 35.85
    tetrachloroethylene 10.29
    eugenol 16.03
    triacetin 14.03
    span 80 12.32
    1,4-butanediol 15.32
    1,1-dichloroethane 3.56
    2-methyl-1-pentanol 4.4
    methyl formate 61.55
    2-methyl-1-butanol 3.69
    n-decane 0.09
    butyronitrile 4.56
    3,7-dimethyl-1-octanol 1.89
    1-chlorooctane 0.5
    1-chlorotetradecane 0.3
    n-nonane 0.07
    undecane 0.08
    tert-butylcyclohexane 0.16
    cyclooctane 0.1
    cyclopentanol 7.08
    tetrahydropyran 3.07
    tert-amyl methyl ether 2.67
    2,5,8-trioxanonane 33.84
    1-hexene 0.34
    2-isopropoxyethanol 15.01
    2,2,2-trifluoroethanol 66.31
    methyl butyrate 11.45

    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