HC Red 7

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  • Identifiers

    CAS number
    24905-87-1

    Molecular formula
    C8H11N3O3

    SMILES
    C1=CC(=C(C=C1NCCO)[N+](=O)[O-])N

    Safety labels

    Irritant
    Irritant

  • Odor profile

    Fragrance
    Odorless 55.99%
    Sweet 32.45%
    Grape 27.31%
    Savory 26.53%
    Meaty 23.51%
    Bitter 20.75%
    Animal 20.21%
    Cooked 19.66%
    Milky 19.23%
    Fishy 19.2%

     

    Flavor
    Odorless 59.2%
    Bitter 52.3%
    Mild 38.99%
    Bland 24.43%
    Sweet-like 22.77%
    Very mild 22.74%
    Yeast 20.97%
    Orange flower 20.55%
    Nitrile 20.23%
    Bread crust 19.71%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.5

    pKa est.
    7.94 (neutral)

    Molecular weight
    197.19 g/mol

    Flash point

    • 217.06 ˚C est.

  • Synonyms

    • 24905-87-1
    • 2-(4-Amino-3-nitroanilino)ethanol
    • 2-((4-Amino-3-nitrophenyl)amino)ethanol
    • HC Red no. 7
    • 5WRI22G12X
    • IMEXINE FZ
    • COLOREX HCR7
    • Ethanol, 2-(4-amino-3-nitroanilino)-
    • DTXSID90179613
    • 2-[(4-amino-3-nitrophenyl)amino]Ethanol
    • 2-AMINO-5-(2-HYDROXYETHYLAMINO)NITROBENZENE
    • HC RED 7
    • RefChem:783436
    • DTXCID50102104
    • 246-521-9
    • Ethanol, 2-((4-amino-3-nitrophenyl)amino)-
    • Ethanol, 2-[(4-amino-3-nitrophenyl)amino]-
    • MFCD00239473
    • UNII-5WRI22G12X
    • EINECS 246-521-9
    • SCHEMBL111190
    • DAGCJJZWDAVKRE-UHFFFAOYSA-N
    • 2-(4-amino-3-nitro-anilino)ethanol
    • AKOS006273073
    • 2-(4-Amino-3-nitroanilino)ethan-1-ol
    • AS-15424
    • DB-067279
    • NS00013730
    • 905A871
    • 1-Amino-2-nitro-4-(beta-hydroxy-ethyl)aminobenzene
    • 1-amino-4-[(2-hydroxyethyl)amino]-2-nitrobenzene
    • 2-NITRO-4-(.BETA.-HYDROXYETHYLAMINO)ANILINE
    • Q27262967
    • 24905-87-1

  • Applications

    HC Red 7 (CAS 24905-87-1) is used primarily as a colorant in industrial formulations; it functions as a dye/pigment in coatings and printing inks to provide a vivid red coloration. It is commonly used as a colorant in polymers and plastics, imparting stable red hues in molded parts and extruded films. It is also applied in textile dyeing processes to achieve rapid and durable coloration, and as a component in paper and packaging inks to achieve consistent reds. Additionally, HC Red 7 may serve as an intermediate in the synthesis of other dyes or as a colorant in specialty coatings.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.93
    methanol 6.66
    isopropanol 1.3
    water 1.96
    ethyl acetate 8.76
    n-propanol 1.22
    acetone 12.33
    n-butanol 1.23
    acetonitrile 4.09
    DMF 95.06
    toluene 1.0
    isobutanol 1.16
    1,4-dioxane 3.28
    methyl acetate 8.02
    THF 24.1
    2-butanone 8.63
    n-pentanol 1.73
    sec-butanol 1.11
    n-hexane 0.03
    ethylene glycol 11.3
    NMP 155.34
    cyclohexane 0.04
    DMSO 212.31
    n-butyl acetate 5.2
    n-octanol 1.03
    chloroform 0.45
    n-propyl acetate 4.38
    acetic acid 24.49
    dichloromethane 0.9
    cyclohexanone 17.59
    propylene glycol 8.84
    isopropyl acetate 4.46
    DMAc 186.43
    2-ethoxyethanol 22.34
    isopentanol 2.74
    n-heptane 0.09
    ethyl formate 9.97
    1,2-dichloroethane 1.42
    n-hexanol 3.35
    2-methoxyethanol 44.09
    isobutyl acetate 2.22
    tetrachloromethane 0.3
    n-pentyl acetate 2.36
    transcutol 31.11
    n-heptanol 1.97
    ethylbenzene 0.78
    MIBK 5.48
    2-propoxyethanol 20.41
    tert-butanol 5.14
    MTBE 1.4
    2-butoxyethanol 9.72
    propionic acid 9.08
    o-xylene 1.66
    formic acid 65.14
    diethyl ether 0.52
    m-xylene 1.59
    p-xylene 1.26
    chlorobenzene 1.07
    dimethyl carbonate 10.66
    n-octane 0.04
    formamide 84.08
    cyclopentanone 37.74
    2-pentanone 7.38
    anisole 3.6
    cyclopentyl methyl ether 4.38
    gamma-butyrolactone 64.56
    1-methoxy-2-propanol 23.4
    pyridine 5.74
    3-pentanone 4.55
    furfural 53.11
    n-dodecane 0.05
    diethylene glycol 35.06
    diisopropyl ether 0.42
    tert-amyl alcohol 3.83
    acetylacetone 25.76
    n-hexadecane 0.06
    acetophenone 9.95
    methyl propionate 11.48
    isopentyl acetate 5.62
    trichloroethylene 3.67
    n-nonanol 1.21
    cyclohexanol 1.86
    benzyl alcohol 7.13
    2-ethylhexanol 2.52
    isooctanol 1.91
    dipropyl ether 1.4
    1,2-dichlorobenzene 1.81
    ethyl lactate 10.65
    propylene carbonate 25.43
    n-methylformamide 41.29
    2-pentanol 0.89
    n-pentane 0.02
    1-propoxy-2-propanol 12.21
    1-methoxy-2-propyl acetate 13.76
    2-(2-methoxypropoxy) propanol 15.65
    mesitylene 1.13
    ε-caprolactone 19.12
    p-cymene 1.54
    epichlorohydrin 24.59
    1,1,1-trichloroethane 1.2
    2-aminoethanol 11.4
    morpholine-4-carbaldehyde 62.79
    sulfolane 117.83
    2,2,4-trimethylpentane 0.06
    2-methyltetrahydrofuran 7.49
    n-hexyl acetate 2.86
    isooctane 0.05
    2-(2-butoxyethoxy)ethanol 16.06
    sec-butyl acetate 2.77
    tert-butyl acetate 7.01
    decalin 0.09
    glycerin 36.76
    diglyme 29.38
    acrylic acid 14.32
    isopropyl myristate 1.49
    n-butyric acid 10.91
    acetyl acetate 7.77
    di(2-ethylhexyl) phthalate 4.6
    ethyl propionate 5.14
    nitromethane 70.22
    1,2-diethoxyethane 3.61
    benzonitrile 4.99
    trioctyl phosphate 2.85
    1-bromopropane 0.29
    gamma-valerolactone 57.35
    n-decanol 1.05
    triethyl phosphate 5.74
    4-methyl-2-pentanol 1.44
    propionitrile 2.23
    vinylene carbonate 17.91
    1,1,2-trichlorotrifluoroethane 40.16
    DMS 7.5
    cumene 0.91
    2-octanol 0.87
    2-hexanone 4.67
    octyl acetate 2.31
    limonene 1.74
    1,2-dimethoxyethane 21.21
    ethyl orthosilicate 4.28
    tributyl phosphate 3.31
    diacetone alcohol 22.72
    N,N-dimethylaniline 4.03
    acrylonitrile 6.84
    aniline 3.03
    1,3-propanediol 15.61
    bromobenzene 0.77
    dibromomethane 0.42
    1,1,2,2-tetrachloroethane 2.85
    2-methyl-cyclohexyl acetate 6.4
    tetrabutyl urea 6.33
    diisobutyl methanol 1.75
    2-phenylethanol 7.62
    styrene 0.73
    dioctyl adipate 4.29
    dimethyl sulfate 41.87
    ethyl butyrate 5.37
    methyl lactate 23.02
    butyl lactate 6.23
    diethyl carbonate 5.07
    propanediol butyl ether 9.74
    triethyl orthoformate 4.53
    p-tert-butyltoluene 1.38
    methyl 4-tert-butylbenzoate 11.54
    morpholine 6.49
    tert-butylamine 1.12
    n-dodecanol 0.84
    dimethoxymethane 20.19
    ethylene carbonate 12.69
    cyrene 31.47
    2-ethoxyethyl acetate 5.72
    2-ethylhexyl acetate 3.74
    1,2,4-trichlorobenzene 3.02
    4-methylpyridine 6.6
    dibutyl ether 0.73
    2,6-dimethyl-4-heptanol 1.75
    DEF 19.38
    dimethyl isosorbide 30.25
    tetrachloroethylene 2.3
    eugenol 12.88
    triacetin 8.32
    span 80 9.93
    1,4-butanediol 7.58
    1,1-dichloroethane 0.57
    2-methyl-1-pentanol 3.06
    methyl formate 31.76
    2-methyl-1-butanol 1.94
    n-decane 0.06
    butyronitrile 2.01
    3,7-dimethyl-1-octanol 1.67
    1-chlorooctane 0.3
    1-chlorotetradecane 0.2
    n-nonane 0.04
    undecane 0.05
    tert-butylcyclohexane 0.1
    cyclooctane 0.03
    cyclopentanol 3.69
    tetrahydropyran 1.2
    tert-amyl methyl ether 1.78
    2,5,8-trioxanonane 26.41
    1-hexene 0.14
    2-isopropoxyethanol 11.47
    2,2,2-trifluoroethanol 20.62
    methyl butyrate 8.17

    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