Azorubine

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  • Identifiers

    CAS number
    3567-69-9

    Molecular formula
    C20H12N2Na2O7S2

    SMILES
    C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])N=NC3=C(C4=CC=CC=C4C(=C3)S(=O)(=O)[O-])O.[Na+].[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 77.76%
    Cooked 21.92%
    Bitter 19.98%
    Savory 18.64%
    Burnt 17.26%
    Grape 14.91%
    Roasted 14.39%
    Pungent 13.85%
    Fruity 13.49%
    Clean 13.49%

     

    Flavor
    Bitter 91.4%
    Odorless 31.39%
    Nitrile 19.97%
    Bland 19.07%
    Very strong 18.04%
    Indole 17.79%
    Taco 17.64%
    Bread crust 17.55%
    Moth ball 17.22%
    Roasted peanuts 17.15%

     

    Odor impact est.
    Odorless

  • Properties

    pKa est.
    3.57 (weak acid)

    Molecular weight
    502.4 g/mol

    Flash point

    • 345.9 ˚C est.

  • Synonyms

    • azorubine
    • DTXSID3021225
    • RefChem:1077425
    • DTXCID001437202
    • Carmoisine
    • 3567-69-9
    • Chromotrope FB
    • Acid red 14
    • C.I. Acid Red 14
    • Azo Rubine
    • Azorubin
    • C.I. 14720
    • Acid Rubine
    • C.I. Food Red 3
    • Karmesin
    • Nacarat
    • Brilliant Crimson Red
    • Carmoisine bss
    • Carmoisine ba
    • Carmoisine fu
    • Carmoisine ws
    • Carmoisine S
    • Carmoisine supra
    • Carmoisine W
    • Solar Rubine
    • Chromotrop FB
    • HD Carmoisine
    • Azo rubine af
    • Carmoisine GRN
    • Carmoisine LAS
    • Azo Rubin Extra
    • Cilefa Rubine R
    • Acetacid Red B
    • Kiton Rubine R
    • Crimson EMBL
    • Erio Rubine B
    • Java Rubine N
    • Nacarat A Export
    • Azo rubin XX
    • Eurocert Azorubine
    • Fenazo Red C
    • Hexacol Carmoisine
    • Azo Rubine LZ
    • Azo Rubine XX
    • Neklacid rubine W
    • Tertracid Red CA
    • Acid Rubine Extra
    • Airedale carmoisine
    • Hispacid Rubine F
    • Pontacyl Rubine R
    • Carmoisine BA-CF
    • Crimson 2EMBL
    • Kiton Crimson 2R
    • Bucacid Azo Rubine
    • Hidacid Azo Rubine
    • Standacol carmoisine
    • Amacid carmoisine B
    • Brilliant Carmoisine
    • Calcocid Rubine XX
    • Solochrome Blue FB
    • Acid Fast Red FB
    • Nacarat (VAN)
    • Azo rubine extra lc
    • Food Red 5
    • HD Carmoisine Supra
    • Kenachrome Blue 2R
    • Atul Crystal Red F
    • Neklacid Azorubine W
    • Azo Rubine for Food
    • Tertrochrome Blue FB
    • CI ACID RED 14
    • Certicol Carmoisine S
    • Acid Chrome Blue BA
    • Amacid Chrome Blue R
    • C.I. Acid Red 14, Disodium Salt
    • Diadem Chrome Blue G
    • Diadem Chrome Blue R
    • Nacarat Extra Pure A
    • Acid Chrome Blue 2R
    • Chrome Fast Blue 2R
    • Omega Chrome Blue FB
    • Acid Chrome Blue FBS
    • Atul Acid Crystal Red
    • Food Red 3
    • Brilliant Acid Rubine M
    • Nylomine Acid Red P4B
    • CI 14720
    • Acid Brilliant Rubine 2G
    • Acid Chrome Blue BA-CF
    • Azorubin (E122)
    • Brasilan Azo Rubine 2NS
    • Brilliant Crimson 2R.FQ
    • Edicol Supra Carmoisine W
    • Acid Brilliant Rubine 2GT
    • Edicol Supra Carmoisine WS
    • Lighthouse Chrome Blue 2R
    • Eniacid Brilliant Rubine 3B
    • Azo Rubine S Specially Pure
    • Azo rubine (biological stain)
    • C.I. Acid Red No. 14
    • Ext D and C Red No. 10
    • 11959 Red
    • L. Red Z 3040
    • NCI-C53849
    • Fruit Red A Extra Yellowish Geigy
    • Hexacol carmoisine conc.
    • C.I. Mordant Blue 79
    • DR4641L47F
    • Poloxal Red 2BRED #1411959 Red
    • 1-Naphthalenesulfonic acid, 4-hydroxy-3-((4-sulfo-1-naphthalenyl)azo)-, disodium salt
    • E 122
    • Acid Brilliant Rubine A2G conc.
    • MFCD00003978
    • disodium;4-hydroxy-3-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate
    • Sodium 4-hydroxy-3-((4-sulfonatonaphthalen-1-yl)diazenyl)naphthalene-1-sulfonate
    • Poloxal Red 2B
    • CI Acid Red
    • Disodium 2-(4-sulfo-1-naphthylazo)-1-naphthol-4-sulfonate
    • Azo Rubine (Technical Grade)
    • Carmoisin [German]
    • CI Food Red 3
    • 2-(4-Sulfo-1-naphthylazo)-1-naphthol-4-sulfonic acid, disodium salt
    • Carmoisin
    • Nacarat Extra Pure 1A
    • 4-Hydroxy-3-((4-sulfo-1-naphthalenyl)azo)-1-naphthalenesulfonic acid, disodium salt
    • Brilliant Crimson 2R. FQ
    • Cerven kysela 14 [Czech]
    • 3567-69-9

  • Applications

    Azorubine (CAS 3567-69-9), also known as Carmoisine, is a synthetic red dye used primarily as a color additive in foods and beverages, including confectionery, soft drinks, dairy products, and desserts. It is also employed in cosmetics and personal care products to provide red coloration and can be used in coatings, inks, and plastic or rubber formulations as a colorant. In pharmaceutical applications, it may be used to color syrups, tablets, and other dosage forms, subject to regulatory limits and formulation requirements. Overall, typical applications include food and beverage coloring, confectionery, dairy products, cosmetics, and industrial colorant roles in coatings, inks, and plastics.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.57
    methanol 0.75
    isopropanol 0.3
    water 0.01
    ethyl acetate 0.8
    n-propanol 0.45
    acetone 1.87
    n-butanol 0.25
    acetonitrile 0.69
    DMF 21.45
    toluene 0.3
    isobutanol 0.21
    1,4-dioxane 5.13
    methyl acetate 1.69
    THF 8.48
    2-butanone 2.54
    n-pentanol 0.17
    sec-butanol 0.34
    n-hexane 0.01
    ethylene glycol 0.72
    NMP 15.99
    cyclohexane 0.02
    DMSO 5.88
    n-butyl acetate 0.8
    n-octanol 0.29
    chloroform 0.47
    n-propyl acetate 0.62
    acetic acid 1.43
    dichloromethane 0.67
    cyclohexanone 3.19
    propylene glycol 0.59
    isopropyl acetate 0.61
    DMAc 20.21
    2-ethoxyethanol 1.82
    isopentanol 0.16
    n-heptane 0.02
    ethyl formate 0.76
    1,2-dichloroethane 0.54
    n-hexanol 0.19
    2-methoxyethanol 5.06
    isobutyl acetate 0.24
    tetrachloromethane 0.04
    n-pentyl acetate 0.97
    transcutol 4.74
    n-heptanol 0.29
    ethylbenzene 0.1
    MIBK 0.53
    2-propoxyethanol 2.93
    tert-butanol 0.26
    MTBE 0.35
    2-butoxyethanol 2.02
    propionic acid 1.15
    o-xylene 0.19
    formic acid 1.71
    diethyl ether 0.52
    m-xylene 0.15
    p-xylene 0.13
    chlorobenzene 0.22
    dimethyl carbonate 1.88
    n-octane 0.01
    formamide 3.84
    cyclopentanone 6.62
    2-pentanone 1.08
    anisole 0.52
    cyclopentyl methyl ether 1.0
    gamma-butyrolactone 6.77
    1-methoxy-2-propanol 2.92
    pyridine 3.92
    3-pentanone 1.19
    furfural 5.51
    n-dodecane 0.02
    diethylene glycol 2.87
    diisopropyl ether 0.1
    tert-amyl alcohol 0.3
    acetylacetone 2.39
    n-hexadecane 0.02
    acetophenone 0.87
    methyl propionate 1.55
    isopentyl acetate 0.57
    trichloroethylene 1.41
    n-nonanol 0.36
    cyclohexanol 0.34
    benzyl alcohol 0.58
    2-ethylhexanol 0.15
    isooctanol 0.2
    dipropyl ether 0.55
    1,2-dichlorobenzene 0.21
    ethyl lactate 0.76
    propylene carbonate 1.45
    n-methylformamide 4.4
    2-pentanol 0.15
    n-pentane 0.01
    1-propoxy-2-propanol 2.0
    1-methoxy-2-propyl acetate 2.13
    2-(2-methoxypropoxy) propanol 2.15
    mesitylene 0.07
    ε-caprolactone 2.64
    p-cymene 0.13
    epichlorohydrin 4.68
    1,1,1-trichloroethane 0.17
    2-aminoethanol 0.81
    morpholine-4-carbaldehyde 16.92
    sulfolane 8.68
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 1.79
    n-hexyl acetate 0.86
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 2.74
    sec-butyl acetate 0.35
    tert-butyl acetate 0.66
    decalin 0.01
    glycerin 2.33
    diglyme 5.77
    acrylic acid 1.9
    isopropyl myristate 0.42
    n-butyric acid 0.75
    acetyl acetate 0.68
    di(2-ethylhexyl) phthalate 0.55
    ethyl propionate 0.61
    nitromethane 4.8
    1,2-diethoxyethane 1.54
    benzonitrile 0.68
    trioctyl phosphate 0.39
    1-bromopropane 0.17
    gamma-valerolactone 13.92
    n-decanol 0.27
    triethyl phosphate 0.46
    4-methyl-2-pentanol 0.08
    propionitrile 0.69
    vinylene carbonate 1.7
    1,1,2-trichlorotrifluoroethane 4.92
    DMS 1.67
    cumene 0.06
    2-octanol 0.21
    2-hexanone 0.73
    octyl acetate 0.6
    limonene 0.17
    1,2-dimethoxyethane 4.13
    ethyl orthosilicate 0.41
    tributyl phosphate 0.42
    diacetone alcohol 1.41
    N,N-dimethylaniline 0.42
    acrylonitrile 1.8
    aniline 0.63
    1,3-propanediol 1.01
    bromobenzene 0.16
    dibromomethane 0.27
    1,1,2,2-tetrachloroethane 1.08
    2-methyl-cyclohexyl acetate 0.55
    tetrabutyl urea 1.12
    diisobutyl methanol 0.12
    2-phenylethanol 0.73
    styrene 0.13
    dioctyl adipate 0.8
    dimethyl sulfate 3.26
    ethyl butyrate 0.68
    methyl lactate 2.11
    butyl lactate 1.15
    diethyl carbonate 0.52
    propanediol butyl ether 1.44
    triethyl orthoformate 0.79
    p-tert-butyltoluene 0.13
    methyl 4-tert-butylbenzoate 1.59
    morpholine 5.74
    tert-butylamine 0.1
    n-dodecanol 0.2
    dimethoxymethane 6.17
    ethylene carbonate 1.14
    cyrene 2.62
    2-ethoxyethyl acetate 2.34
    2-ethylhexyl acetate 0.47
    1,2,4-trichlorobenzene 0.43
    4-methylpyridine 1.75
    dibutyl ether 0.43
    2,6-dimethyl-4-heptanol 0.12
    DEF 2.78
    dimethyl isosorbide 4.29
    tetrachloroethylene 0.68
    eugenol 1.93
    triacetin 1.73
    span 80 1.75
    1,4-butanediol 0.3
    1,1-dichloroethane 0.26
    2-methyl-1-pentanol 0.13
    methyl formate 3.3
    2-methyl-1-butanol 0.19
    n-decane 0.03
    butyronitrile 0.41
    3,7-dimethyl-1-octanol 0.21
    1-chlorooctane 0.13
    1-chlorotetradecane 0.06
    n-nonane 0.02
    undecane 0.02
    tert-butylcyclohexane 0.01
    cyclooctane 0.01
    cyclopentanol 0.73
    tetrahydropyran 1.58
    tert-amyl methyl ether 0.37
    2,5,8-trioxanonane 4.49
    1-hexene 0.04
    2-isopropoxyethanol 0.94
    2,2,2-trifluoroethanol 0.86
    methyl butyrate 0.78

    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