C.I. Acid Blue 90

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  • Identifiers

    CAS number
    6104-58-1

    Molecular formula
    C47H48N3NaO7S2

    SMILES
    CCN(CC1=CC(=CC=C1)S(=O)(=O)[O-])C2=CC(=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC(=CC=C4)S(=O)(=O)[O-])C=C3C)C5=CC=C(C=C5)NC6=CC=C(C=C6)OCC)C.[Na+]

    Safety labels

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 41.98%
    Fruity 34.03%
    Grape 29.18%
    Fresh 25.05%
    Cooked 23.04%
    Savory 22.83%
    Fatty 22.55%
    Neroli 22.45%
    Citrus 22.36%
    Floral 21.6%

     

    Flavor
    Bitter 85.39%
    Odorless 25.27%
    Nitrile 20.06%
    Bland 19.23%
    Cedarleaf 18.71%
    Very strong 18.25%
    Heather 18.2%
    Lovage 18.12%
    Genet 18.02%
    Broom 18.02%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.87 (weak acid)

    Molecular weight
    854.0 g/mol

    Flash point

    • 352.04 ˚C est.

    Solubility expt.

    • 1mg/mL

  • Synonyms

    • 6104-58-1
    • Brilliant Blue G
    • Acid Blue 90
    • C.I. Acid Blue 90
    • Derma Cyanine G
    • Impero Azure G
    • Benzyl Cyanine G
    • Brilliant Blue J
    • Coomassie Blue G 250
    • Optanol Cyanine G
    • Fenazo Blue XXFG
    • Acidine Sky Blue G
    • Silk Fast Cyanine G
    • Water Blue 150
    • tissueblue
    • Brilliant Acid Blue G
    • Brilliant Acid Blue J
    • Brilliant Acid Blue GI
    • Coomassie Brilliant Blue G
    • Acid Brilliant Cyanine G
    • Brilliant Acid Cyanine G
    • Amacid Brilliant Cyanine G
    • Eriosin Brilliant Cyanine G
    • M1ZRX790SI
    • DYME
    • Bucacid Brilliant Indocyanine G
    • Coomassie Blue G-250
    • Bbg-250
    • COOMASSIE BRILLIANT BLUE
    • Benzenemethanaminium, N-(4-((4-((4-ethoxyphenyl)amino)phenyl)(4-(ethyl((3-sulfophenyl)methyl)amino)-2-methylphenyl)methylene)-3-methyl-2,5-cyclohexadien-1-ylidene)-N-ethyl-3-sulfo-, inner salt, monosodium salt
    • serva blue G
    • NSC-328382
    • coomassie blue G
    • Xylene Brilliant Cyanine G
    • Coomassie Brilliant Blue G250
    • sodium;3-((4-((Z)-(4-(4-ethoxyanilino)phenyl)-(4-(ethyl-((3-sulfonatophenyl)methyl)azaniumylidene)-2-methylcyclohexa-2,5-dien-1-ylidene)methyl)-N-ethyl-3-methylanilino)methyl)benzenesulfonate
    • sodium;3-[[4-[(Z)-[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-N-ethyl-3-methylanilino]methyl]benzenesulfonate
    • Coomassie Brilliant Blue G 250
    • RefChem:917794
    • 228-058-4
    • sodium 3-((((1E,4E)-4-((4-((4-ethoxyphenyl)amino)phenyl)(4-(ethyl((4-sulfonatophenyl)methyl)amino)-2-methylphenyl)methylidene)-3-methylcyclohexa-2,5-dien-1-ylidene)(ethyl)azaniumyl)methyl)benzene-1-sulfonate
    • Brilliant blue G-250
    • Brilliant Indocyanine GA-CF
    • BBG [Dye]
    • BRILLIANT BLUE G [JAN]
    • UNII-M1ZRX790SI
    • Coomassie Brilliant Blue G-250
    • C.I. Acid Blue 90 (VAN)
    • Benzenemethanaminium,N-[4-[[4-[(4-ethoxyphenyl)amino]phenyl][4-[ethyl[(3-sulfophenyl)methyl]amino]-2-methylphenyl]methylene]-3-methyl-2,5-cyclohexadien-1-ylidene]-N-ethyl-3-sulfo-, inner salt, monosodium salt
    • EINECS 228-058-4
    • NSC 328382
    • FD&C Green No. 3;Food green 3;C.I. 42053
    • BBG
    • EC 228-058-4
    • orb1306551
    • orb3025841
    • SCHEMBL1639259
    • SCHEMBL29349927
    • SCHEMBL29351683
    • SCHEMBL29394379
    • SCHEMBL29615036
    • MSK2448
    • CMGWKYXJIYYESN-UHFFFAOYSA-M
    • BRILLIANT BLUE G [WHO-DD]
    • AT10516
    • BRILLIANT BLUE G [ORANGE BOOK]
    • FC10704
    • COOMASSIE BRILLIANT BLUE G [MI]
    • F986746
    • Benzenemethanaminium, N-(4-((4-((4-ethoxyphenyl)amino)phenyl)(4-(ethyl((3-sulfophenyl)methyl)amino)-2-methylphenyl)methylene)-3-methyl-2,5-cyclohexadien-1-ylidene)-N-ethyl-3-sulfo-, hydroxide, inner salt, monosodium salt
    • Benzenemethanaminium, N-(4-((4-((4-ethoxyphenyl)amino)phenyl)(4-(ethyl((3-sulfophenyl)methyl)amino)-2-methylphenyl)methylene)-3-methyl-2,5-cyclohexadien-1-ylidene)-N-ethyl-3-sulfo-, inner salt, sodium salt (1:1)
    • disodium,2-[[4-[ethyl-[(3-sulfonatophenyl)methyl]amino]phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]-5-hydroxybenzenesulfonate
    • Hydrogen (4-(4-(p-ethoxyanilino)-4'-(ethyl(m-sulphonatobenzyl)amino)-2'-methylbenzhydrylene)-3-methylcyclohexa-2,5-dien-1-ylidene)(ethyl)(m-sulphonatobenzyl)ammonium, monosodium salt
    • sodium;3-[[4-[[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]-2-methylcyclohexa-2,5-dien-1-ylidene]methyl]-N-ethyl-3-methylanilino]methyl]benzenesulfonate
    • sodium;3-[[4-[[4-(4-ethoxyanilino)phenyl]-[4-[ethyl-[(3-sulfonatophenyl)methyl]iminio]-2-methyl-cyclohexa-2,5-dien-1-ylidene]methyl]-N-ethyl-3-methyl-anilino]methyl]benzenesulfonate
    • 6104-58-1

  • Applications

    C.I. Acid Blue 90 (CAS 6104-58-1) is an acid dye used primarily for coloring protein fibers and certain polyamides under acidic conditions. It is commonly applied in textile dyeing and finishing for wool and silk, as well as nylon (polyamide). It also serves as a colorant for leather, and can be formulated into printing inks and coatings where a blue shade is required. In addition, it may be employed to color compatible plastics/polymers and certain specialty papers or carpet backings, with performance defined by formulation and processing conditions. All use is subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.36
    methanol 0.62
    isopropanol 0.16
    water 0.0
    ethyl acetate 0.34
    n-propanol 0.36
    acetone 0.81
    n-butanol 0.24
    acetonitrile 0.22
    DMF 4.78
    toluene 0.13
    isobutanol 0.17
    1,4-dioxane 0.81
    methyl acetate 0.55
    THF 1.74
    2-butanone 1.16
    n-pentanol 0.2
    sec-butanol 0.2
    n-hexane 0.0
    ethylene glycol 0.14
    NMP 5.59
    cyclohexane 0.0
    DMSO 1.64
    n-butyl acetate 0.28
    n-octanol 0.14
    chloroform 2.75
    n-propyl acetate 0.33
    acetic acid 0.86
    dichloromethane 1.85
    cyclohexanone 1.37
    propylene glycol 0.33
    isopropyl acetate 0.22
    DMAc 7.74
    2-ethoxyethanol 1.11
    isopentanol 0.13
    n-heptane 0.0
    ethyl formate 0.56
    1,2-dichloroethane 0.61
    n-hexanol 0.1
    2-methoxyethanol 1.67
    isobutyl acetate 0.18
    tetrachloromethane 0.1
    n-pentyl acetate 0.5
    transcutol 1.59
    n-heptanol 0.16
    ethylbenzene 0.05
    MIBK 0.26
    2-propoxyethanol 1.2
    tert-butanol 0.1
    MTBE 0.12
    2-butoxyethanol 1.11
    propionic acid 0.54
    o-xylene 0.07
    formic acid 0.66
    diethyl ether 0.15
    m-xylene 0.06
    p-xylene 0.07
    chlorobenzene 0.28
    dimethyl carbonate 0.49
    n-octane 0.0
    formamide 0.98
    cyclopentanone 2.33
    2-pentanone 0.64
    anisole 0.31
    cyclopentyl methyl ether 0.24
    gamma-butyrolactone 2.05
    1-methoxy-2-propanol 1.22
    pyridine 1.52
    3-pentanone 0.5
    furfural 2.92
    n-dodecane 0.0
    diethylene glycol 0.64
    diisopropyl ether 0.02
    tert-amyl alcohol 0.14
    acetylacetone 0.9
    n-hexadecane 0.0
    acetophenone 0.61
    methyl propionate 0.57
    isopentyl acetate 0.23
    trichloroethylene 2.7
    n-nonanol 0.16
    cyclohexanol 0.12
    benzyl alcohol 0.48
    2-ethylhexanol 0.06
    isooctanol 0.11
    dipropyl ether 0.12
    1,2-dichlorobenzene 0.27
    ethyl lactate 0.41
    propylene carbonate 0.74
    n-methylformamide 1.69
    2-pentanol 0.09
    n-pentane 0.0
    1-propoxy-2-propanol 0.78
    1-methoxy-2-propyl acetate 0.62
    2-(2-methoxypropoxy) propanol 1.01
    mesitylene 0.02
    ε-caprolactone 1.19
    p-cymene 0.03
    epichlorohydrin 2.43
    1,1,1-trichloroethane 0.31
    2-aminoethanol 0.36
    morpholine-4-carbaldehyde 4.79
    sulfolane 2.78
    2,2,4-trimethylpentane 0.0
    2-methyltetrahydrofuran 0.45
    n-hexyl acetate 0.46
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 1.11
    sec-butyl acetate 0.17
    tert-butyl acetate 0.19
    decalin 0.0
    glycerin 0.67
    diglyme 2.15
    acrylic acid 0.75
    isopropyl myristate 0.13
    n-butyric acid 0.62
    acetyl acetate 0.26
    di(2-ethylhexyl) phthalate 0.33
    ethyl propionate 0.28
    nitromethane 1.79
    1,2-diethoxyethane 0.42
    benzonitrile 0.4
    trioctyl phosphate 0.18
    1-bromopropane 0.2
    gamma-valerolactone 5.97
    n-decanol 0.09
    triethyl phosphate 0.17
    4-methyl-2-pentanol 0.04
    propionitrile 0.29
    vinylene carbonate 1.07
    1,1,2-trichlorotrifluoroethane 4.74
    DMS 0.44
    cumene 0.03
    2-octanol 0.09
    2-hexanone 0.53
    octyl acetate 0.23
    limonene 0.04
    1,2-dimethoxyethane 1.7
    ethyl orthosilicate 0.15
    tributyl phosphate 0.19
    diacetone alcohol 0.53
    N,N-dimethylaniline 0.23
    acrylonitrile 0.59
    aniline 0.31
    1,3-propanediol 0.48
    bromobenzene 0.22
    dibromomethane 0.67
    1,1,2,2-tetrachloroethane 1.96
    2-methyl-cyclohexyl acetate 0.25
    tetrabutyl urea 0.45
    diisobutyl methanol 0.03
    2-phenylethanol 0.34
    styrene 0.08
    dioctyl adipate 0.34
    dimethyl sulfate 0.94
    ethyl butyrate 0.26
    methyl lactate 0.82
    butyl lactate 0.72
    diethyl carbonate 0.16
    propanediol butyl ether 1.03
    triethyl orthoformate 0.27
    p-tert-butyltoluene 0.03
    methyl 4-tert-butylbenzoate 0.74
    morpholine 1.24
    tert-butylamine 0.03
    n-dodecanol 0.05
    dimethoxymethane 1.47
    ethylene carbonate 0.61
    cyrene 1.63
    2-ethoxyethyl acetate 1.14
    2-ethylhexyl acetate 0.19
    1,2,4-trichlorobenzene 0.48
    4-methylpyridine 0.98
    dibutyl ether 0.11
    2,6-dimethyl-4-heptanol 0.03
    DEF 1.16
    dimethyl isosorbide 1.32
    tetrachloroethylene 1.03
    eugenol 1.0
    triacetin 0.73
    span 80 0.78
    1,4-butanediol 0.23
    1,1-dichloroethane 0.49
    2-methyl-1-pentanol 0.13
    methyl formate 1.16
    2-methyl-1-butanol 0.17
    n-decane 0.01
    butyronitrile 0.26
    3,7-dimethyl-1-octanol 0.09
    1-chlorooctane 0.05
    1-chlorotetradecane 0.02
    n-nonane 0.0
    undecane 0.0
    tert-butylcyclohexane 0.0
    cyclooctane 0.0
    cyclopentanol 0.23
    tetrahydropyran 0.37
    tert-amyl methyl ether 0.12
    2,5,8-trioxanonane 1.42
    1-hexene 0.02
    2-isopropoxyethanol 0.58
    2,2,2-trifluoroethanol 0.39
    methyl butyrate 0.5

    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