Acid Blue 40

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  • Identifiers

    CAS number
    6424-85-7

    Molecular formula
    C22H16N3NaO6S

    SMILES
    CC(=O)NC1=CC=C(C=C1)NC2=CC(=C(C3=C2C(=O)C4=CC=CC=C4C3=O)N)S(=O)(=O)[O-].[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 66.55%
    Grape 30.07%
    Fruity 29.48%
    Cooked 24.34%
    Savory 23.28%
    Bitter 21.9%
    Milky 18.09%
    Burnt 17.78%
    Meaty 17.68%
    Dairy 14.66%

     

    Flavor
    Bitter 88.66%
    Odorless 38.76%
    Bland 20.88%
    Nitrile 20.16%
    Mild 18.89%
    Sweet-like 18.83%
    Very strong 18.72%
    Bread crust 18.44%
    Orange flower 18.42%
    Indole 18.39%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.3 (weak acid)

    Molecular weight
    473.4 g/mol

    Flash point

    • 332.44 ˚C est.

  • Synonyms

    • acid blue 40
    • 6424-85-7
    • C.I. Acid Blue 40
    • WA81N3PV2R
    • AB40 cpd
    • CI 62125
    • DTXSID9037030
    • C.I. 62125
    • NSC-366218
    • 2-Anthracenesulfonic acid, 4-((4-(acetylamino)phenyl)amino)-1-amino-9,10-dihydro-9,10-dioxo-, sodium salt (1:1)
    • RefChem:109234
    • DTXCID7017030
    • 229-190-5
    • C.I. Acid blue 40 (sodium salt)
    • Sodium 4-((4-acetamidophenyl)amino)-1-amino-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
    • sodium;4-(4-acetamidoanilino)-1-amino-9,10-dioxoanthracene-2-sulfonate
    • 2-Anthracenesulfonic acid, 4-((4-(acetylamino)phenyl)amino)-1-amino-9,10-dihydro-9,10-dioxo-, monosodium salt
    • 2-Anthracenesulfonic acid,4-[[4-(acetylamino)phenyl]amino]-1-amino-9,10-dihydro-9,10-dioxo-,monosodium salt
    • CHEMBL271688
    • MFCD00001216
    • UNII-WA81N3PV2R
    • EINECS 229-190-5
    • NSC 366218
    • CI ACID BLUE 40
    • orb2566745
    • SCHEMBL29356677
    • HY-D0434
    • CI ACID BLUE 40 SODIUM SALT
    • AKOS000282968
    • AKOS024284386
    • Acid Blue 40 (C.I. 62125)
    • FA33618
    • C.I. ACID BLUE 40 SODIUM SALT
    • Sodium 4-(4-acetamidophenyl-1-amino)-1-amino-9,10-dioxoanthracene-2-sulphonate
    • 2-Anthracenesulfonic acid, 4-(p-acetamidoanilino)-1-amino-9,10-dihydro-9,10-dioxo-, sodium salt
    • AS-17120
    • ST075444
    • CS-0010486
    • NS00082147
    • E79443
    • A917628
    • Q27292525
    • SODIUM 1-AMINO-4-(4-ACETAMIDOANILINO)ANTHRAQUINONE-2-SULFONATE
    • 4-(P-ACETAMIDOANILINO)-1-AMINO-2-ANTHRAQUINONESULFONIC ACID MONOSODIUM SALT
    • 4-{[4-(acetylamino)phenyl]amino}-1-amino-9,10-dioxoanthracene-2-sulfonic acid, sodium salt
    • Sodium 4-(4-acetamidoanilino)-1-amino-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
    • Sodium4-((4-acetamidophenyl)amino)-1-amino-9,10-dioxo-9,10-dihydroanthracene-2-sulfonate
    • 2-ANTHRACENESULFONIC ACID, 4-(P-ACETAMIDOANILINO)-1-AMINO-9,10-DIHYDRO-9,10-DIOXO-, MONOSODIUM SALT
    • 6424-85-7

  • Applications

    Acid Blue 40 (CAS number: 6424-85-7) is primarily used as an acid dye for protein fibers such as wool, silk, and nylon in textile processing to impart blue coloration on finished goods and during finishing. It is also used for dyeing leather and may be employed in textile printing and aqueous dyeing processes for fabrics. In addition, it may serve as a colorant or intermediate in dye formulations for coatings and inks related to textiles and leather applications. Its use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 2.7
    methanol 3.51
    isopropanol 0.98
    water 0.01
    ethyl acetate 1.64
    n-propanol 1.67
    acetone 6.41
    n-butanol 1.01
    acetonitrile 2.07
    DMF 30.9
    toluene 0.1
    isobutanol 0.61
    1,4-dioxane 3.7
    methyl acetate 2.71
    THF 16.01
    2-butanone 7.01
    n-pentanol 0.43
    sec-butanol 0.76
    n-hexane 0.0
    ethylene glycol 1.13
    NMP 27.8
    cyclohexane 0.01
    DMSO 39.74
    n-butyl acetate 1.23
    n-octanol 0.13
    chloroform 1.77
    n-propyl acetate 1.06
    acetic acid 6.77
    dichloromethane 1.96
    cyclohexanone 7.36
    propylene glycol 1.4
    isopropyl acetate 0.66
    DMAc 39.17
    2-ethoxyethanol 4.21
    isopentanol 0.5
    n-heptane 0.0
    ethyl formate 3.33
    1,2-dichloroethane 1.33
    n-hexanol 0.25
    2-methoxyethanol 15.43
    isobutyl acetate 0.3
    tetrachloromethane 0.1
    n-pentyl acetate 0.58
    transcutol 2.98
    n-heptanol 0.23
    ethylbenzene 0.05
    MIBK 0.66
    2-propoxyethanol 4.51
    tert-butanol 0.45
    MTBE 0.17
    2-butoxyethanol 2.33
    propionic acid 2.74
    o-xylene 0.06
    formic acid 6.83
    diethyl ether 0.45
    m-xylene 0.05
    p-xylene 0.07
    chlorobenzene 0.24
    dimethyl carbonate 2.65
    n-octane 0.0
    formamide 13.1
    cyclopentanone 16.33
    2-pentanone 2.66
    anisole 0.43
    cyclopentyl methyl ether 0.65
    gamma-butyrolactone 16.06
    1-methoxy-2-propanol 6.13
    pyridine 4.72
    3-pentanone 1.64
    furfural 11.38
    n-dodecane 0.0
    diethylene glycol 4.07
    diisopropyl ether 0.03
    tert-amyl alcohol 0.43
    acetylacetone 3.6
    n-hexadecane 0.0
    acetophenone 1.02
    methyl propionate 2.68
    isopentyl acetate 0.71
    trichloroethylene 3.61
    n-nonanol 0.15
    cyclohexanol 0.45
    benzyl alcohol 0.86
    2-ethylhexanol 0.13
    isooctanol 0.15
    dipropyl ether 0.28
    1,2-dichlorobenzene 0.24
    ethyl lactate 1.41
    propylene carbonate 4.03
    n-methylformamide 13.43
    2-pentanol 0.25
    n-pentane 0.0
    1-propoxy-2-propanol 2.14
    1-methoxy-2-propyl acetate 2.06
    2-(2-methoxypropoxy) propanol 2.07
    mesitylene 0.02
    ε-caprolactone 5.46
    p-cymene 0.04
    epichlorohydrin 11.23
    1,1,1-trichloroethane 0.47
    2-aminoethanol 2.1
    morpholine-4-carbaldehyde 17.15
    sulfolane 25.48
    2,2,4-trimethylpentane 0.0
    2-methyltetrahydrofuran 2.21
    n-hexyl acetate 0.49
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 2.18
    sec-butyl acetate 0.37
    tert-butyl acetate 0.51
    decalin 0.0
    glycerin 4.86
    diglyme 5.19
    acrylic acid 3.79
    isopropyl myristate 0.2
    n-butyric acid 3.23
    acetyl acetate 1.12
    di(2-ethylhexyl) phthalate 0.54
    ethyl propionate 1.08
    nitromethane 17.05
    1,2-diethoxyethane 0.68
    benzonitrile 0.91
    trioctyl phosphate 0.33
    1-bromopropane 0.34
    gamma-valerolactone 27.84
    n-decanol 0.11
    triethyl phosphate 0.64
    4-methyl-2-pentanol 0.1
    propionitrile 1.77
    vinylene carbonate 4.14
    1,1,2-trichlorotrifluoroethane 11.55
    DMS 0.98
    cumene 0.03
    2-octanol 0.1
    2-hexanone 1.46
    octyl acetate 0.36
    limonene 0.06
    1,2-dimethoxyethane 7.73
    ethyl orthosilicate 0.43
    tributyl phosphate 0.4
    diacetone alcohol 1.81
    N,N-dimethylaniline 0.26
    acrylonitrile 3.81
    aniline 0.65
    1,3-propanediol 3.89
    bromobenzene 0.15
    dibromomethane 0.76
    1,1,2,2-tetrachloroethane 2.44
    2-methyl-cyclohexyl acetate 0.61
    tetrabutyl urea 0.87
    diisobutyl methanol 0.07
    2-phenylethanol 0.72
    styrene 0.07
    dioctyl adipate 0.64
    dimethyl sulfate 5.85
    ethyl butyrate 1.03
    methyl lactate 3.96
    butyl lactate 1.06
    diethyl carbonate 0.83
    propanediol butyl ether 1.24
    triethyl orthoformate 0.75
    p-tert-butyltoluene 0.04
    methyl 4-tert-butylbenzoate 1.08
    morpholine 7.05
    tert-butylamine 0.11
    n-dodecanol 0.07
    dimethoxymethane 8.19
    ethylene carbonate 2.91
    cyrene 3.87
    2-ethoxyethyl acetate 1.38
    2-ethylhexyl acetate 0.5
    1,2,4-trichlorobenzene 0.47
    4-methylpyridine 2.07
    dibutyl ether 0.14
    2,6-dimethyl-4-heptanol 0.07
    DEF 4.21
    dimethyl isosorbide 3.68
    tetrachloroethylene 1.21
    eugenol 1.67
    triacetin 1.07
    span 80 1.23
    1,4-butanediol 0.79
    1,1-dichloroethane 0.67
    2-methyl-1-pentanol 0.27
    methyl formate 8.31
    2-methyl-1-butanol 0.55
    n-decane 0.0
    butyronitrile 1.47
    3,7-dimethyl-1-octanol 0.1
    1-chlorooctane 0.04
    1-chlorotetradecane 0.02
    n-nonane 0.0
    undecane 0.0
    tert-butylcyclohexane 0.0
    cyclooctane 0.0
    cyclopentanol 1.15
    tetrahydropyran 1.63
    tert-amyl methyl ether 0.19
    2,5,8-trioxanonane 3.58
    1-hexene 0.03
    2-isopropoxyethanol 1.28
    2,2,2-trifluoroethanol 2.87
    methyl butyrate 2.0

    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