HC Red 3

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  • Identifiers

    CAS number
    2871-01-4

    Molecular formula
    C8H11N3O3

    SMILES
    C1=CC(=C(C=C1N)[N+](=O)[O-])NCCO

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 56.57%
    Sweet 30.66%
    Grape 27.66%
    Savory 26.9%
    Meaty 24.3%
    Bitter 21.12%
    Animal 20.75%
    Fishy 19.82%
    Cooked 19.75%
    Milky 19.58%

     

    Flavor
    Odorless 59.12%
    Bitter 51.51%
    Mild 39.58%
    Bland 24.19%
    Sweet-like 22.61%
    Very mild 22.46%
    Yeast 20.83%
    Orange flower 20.61%
    Nitrile 20.21%
    Bread crust 19.81%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.5

    pKa est.
    7.95 (neutral)

    Molecular weight
    197.19 g/mol

    Melting point expt.

    • 260 to 262 °F (NTP, 1992)

    Flash point

    • 219.67 ˚C est.

    Solubility expt.

    • less than 0.1 mg/mL at 64 °F (NTP, 1992)

  • Synonyms

    • 2871-01-4
    • HC Red No. 3
    • HC Red 3
    • Ethanol, 2-[(4-amino-2-nitrophenyl)amino]-
    • H.C. Red 3
    • 51CPX7M1SQ
    • 4-(2-Hydroxyethyl)amino-3-nitroaniline
    • DTXSID2021236
    • COLOREX HCR3
    • NCI-C54922
    • JAROCOL RED 3
    • N1-(2-Hydroxyethyl)-2-nitro-p-phenylenediamine
    • Ethanol, 2-(4-amino-2-nitroanilino)-
    • DTXCID801236
    • Ethanol, 2-((4-amino-2-nitrophenyl)amino)-
    • COVARIANE ROUGE W 3123
    • ETHANOL,2-((4-AMINO-2-NITROPHENYL)AMINO)-
    • RefChem:145374
    • 220-701-7
    • 2-((4-Amino-2-nitrophenyl)amino)ethanol
    • 2-(4-Amino-2-nitroanilino)ethanol
    • 2-(4-amino-2-nitroanilino)-ethanol
    • 2-[(4-amino-2-nitrophenyl)amino]ethanol
    • MFCD00071801
    • HC RED #3
    • CCRIS 1363
    • HSDB 4203
    • EINECS 220-701-7
    • 2-(4-amino-2-nitro-anilino)ethanol
    • BRN 2110120
    • UNII-51CPX7M1SQ
    • SCHEMBL109433
    • HC RED NO.3 [HSDB]
    • N(sup 1)-(2-Hydroxyethyl)-2-nitro-p-phenylenediamine
    • SCHEMBL9793653
    • CHEMBL3185903
    • SCHEMBL29390674
    • CHEBI:82473
    • HC RED NO. 3 [IARC]
    • GZGZVOLBULPDFD-UHFFFAOYSA-N
    • Tox21_302416
    • AKOS006274887
    • AC-8702
    • 2-(4-Amino-2-nitroanilino)ethan-1-ol
    • NCGC00255317-01
    • LS-13438
    • CAS-2871-01-4
    • 2-[(4-Amino-2-nitrophenyl)amino]-ethanol
    • 4-Amino-N-(2-hydroxyethyl)-2-nitroaniline
    • DB-047437
    • 2-[(4-azanyl-2-nitro-phenyl)amino]ethanol
    • A2671
    • CS-0188275
    • NS00001705
    • 2-((4-Amino-2-nitrophenyl)amino)ethan-1-ol
    • C19430
    • H10871
    • 871A014
    • A819545
    • F210319
    • N1-(2-Hydroxyethyl)-2-nitro-1,4-phenylenediamine
    • Q27155971
    • 2871-01-4

  • Applications

    HC Red 3 (CAS 2871-01-4) is an organic colorant used across various industrial formulations. Typical applications include colorant in inks and coatings; coloration of plastics and polymers; dyeing of textiles and leather; and coloration in adhesives. It may also be used as an intermediate in the synthesis of other dyes for textile and paper processing, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 8.34
    methanol 23.16
    isopropanol 3.35
    water 3.04
    ethyl acetate 8.55
    n-propanol 4.78
    acetone 27.7
    n-butanol 3.71
    acetonitrile 8.38
    DMF 166.38
    toluene 1.24
    isobutanol 2.88
    1,4-dioxane 9.68
    methyl acetate 10.73
    THF 43.05
    2-butanone 15.33
    n-pentanol 3.71
    sec-butanol 2.43
    n-hexane 0.03
    ethylene glycol 21.49
    NMP 141.01
    cyclohexane 0.07
    DMSO 344.68
    n-butyl acetate 5.38
    n-octanol 1.66
    chloroform 1.22
    n-propyl acetate 4.85
    acetic acid 26.38
    dichloromethane 2.38
    cyclohexanone 26.1
    propylene glycol 13.22
    isopropyl acetate 3.99
    DMAc 199.89
    2-ethoxyethanol 27.56
    isopentanol 4.86
    n-heptane 0.09
    ethyl formate 14.91
    1,2-dichloroethane 3.43
    n-hexanol 4.98
    2-methoxyethanol 59.86
    isobutyl acetate 2.41
    tetrachloromethane 0.62
    n-pentyl acetate 2.51
    transcutol 23.99
    n-heptanol 2.64
    ethylbenzene 1.0
    MIBK 5.85
    2-propoxyethanol 21.68
    tert-butanol 7.46
    MTBE 1.84
    2-butoxyethanol 11.18
    propionic acid 11.5
    o-xylene 1.89
    formic acid 68.05
    diethyl ether 0.95
    m-xylene 1.61
    p-xylene 1.47
    chlorobenzene 1.7
    dimethyl carbonate 11.31
    n-octane 0.05
    formamide 85.41
    cyclopentanone 49.06
    2-pentanone 9.85
    anisole 4.79
    cyclopentyl methyl ether 4.91
    gamma-butyrolactone 64.11
    1-methoxy-2-propanol 27.06
    pyridine 10.5
    3-pentanone 5.96
    furfural 59.28
    n-dodecane 0.06
    diethylene glycol 39.42
    diisopropyl ether 0.4
    tert-amyl alcohol 5.22
    acetylacetone 25.06
    n-hexadecane 0.07
    acetophenone 11.16
    methyl propionate 12.79
    isopentyl acetate 5.5
    trichloroethylene 7.35
    n-nonanol 1.78
    cyclohexanol 3.45
    benzyl alcohol 10.06
    2-ethylhexanol 3.05
    isooctanol 2.32
    dipropyl ether 1.55
    1,2-dichlorobenzene 2.6
    ethyl lactate 11.11
    propylene carbonate 25.0
    n-methylformamide 65.51
    2-pentanol 1.45
    n-pentane 0.03
    1-propoxy-2-propanol 11.99
    1-methoxy-2-propyl acetate 12.18
    2-(2-methoxypropoxy) propanol 14.16
    mesitylene 1.12
    ε-caprolactone 22.48
    p-cymene 1.6
    epichlorohydrin 37.57
    1,1,1-trichloroethane 1.94
    2-aminoethanol 20.54
    morpholine-4-carbaldehyde 68.43
    sulfolane 114.71
    2,2,4-trimethylpentane 0.07
    2-methyltetrahydrofuran 11.02
    n-hexyl acetate 3.26
    isooctane 0.05
    2-(2-butoxyethoxy)ethanol 15.04
    sec-butyl acetate 2.62
    tert-butyl acetate 5.99
    decalin 0.12
    glycerin 43.03
    diglyme 28.12
    acrylic acid 17.42
    isopropyl myristate 1.62
    n-butyric acid 13.2
    acetyl acetate 7.32
    di(2-ethylhexyl) phthalate 4.99
    ethyl propionate 5.16
    nitromethane 73.13
    1,2-diethoxyethane 3.91
    benzonitrile 7.14
    trioctyl phosphate 3.35
    1-bromopropane 0.67
    gamma-valerolactone 65.9
    n-decanol 1.45
    triethyl phosphate 5.72
    4-methyl-2-pentanol 1.72
    propionitrile 4.47
    vinylene carbonate 20.66
    1,1,2-trichlorotrifluoroethane 46.7
    DMS 7.19
    cumene 1.03
    2-octanol 1.12
    2-hexanone 5.81
    octyl acetate 2.58
    limonene 1.92
    1,2-dimethoxyethane 31.72
    ethyl orthosilicate 4.47
    tributyl phosphate 3.61
    diacetone alcohol 19.41
    N,N-dimethylaniline 4.74
    acrylonitrile 12.11
    aniline 4.63
    1,3-propanediol 24.71
    bromobenzene 1.13
    dibromomethane 1.09
    1,1,2,2-tetrachloroethane 5.67
    2-methyl-cyclohexyl acetate 6.32
    tetrabutyl urea 6.51
    diisobutyl methanol 1.83
    2-phenylethanol 9.25
    styrene 1.03
    dioctyl adipate 4.38
    dimethyl sulfate 40.09
    ethyl butyrate 5.46
    methyl lactate 24.5
    butyl lactate 6.21
    diethyl carbonate 5.21
    propanediol butyl ether 10.01
    triethyl orthoformate 4.6
    p-tert-butyltoluene 1.36
    methyl 4-tert-butylbenzoate 10.74
    morpholine 16.22
    tert-butylamine 1.76
    n-dodecanol 1.11
    dimethoxymethane 30.87
    ethylene carbonate 14.75
    cyrene 29.0
    2-ethoxyethyl acetate 5.75
    2-ethylhexyl acetate 3.63
    1,2,4-trichlorobenzene 4.06
    4-methylpyridine 10.53
    dibutyl ether 0.94
    2,6-dimethyl-4-heptanol 1.83
    DEF 22.46
    dimethyl isosorbide 26.0
    tetrachloroethylene 4.18
    eugenol 12.6
    triacetin 7.37
    span 80 9.82
    1,4-butanediol 12.69
    1,1-dichloroethane 1.18
    2-methyl-1-pentanol 4.61
    methyl formate 52.01
    2-methyl-1-butanol 3.79
    n-decane 0.08
    butyronitrile 4.35
    3,7-dimethyl-1-octanol 2.08
    1-chlorooctane 0.45
    1-chlorotetradecane 0.27
    n-nonane 0.06
    undecane 0.07
    tert-butylcyclohexane 0.11
    cyclooctane 0.04
    cyclopentanol 6.24
    tetrahydropyran 3.25
    tert-amyl methyl ether 2.13
    2,5,8-trioxanonane 23.75
    1-hexene 0.2
    2-isopropoxyethanol 12.49
    2,2,2-trifluoroethanol 21.5
    methyl butyrate 9.18

    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