Acid Blue 7

Overview IFRA Request a quote

  • Identifiers

    CAS number
    3486-30-4

    Molecular formula
    C37H35N2NaO6S2

    SMILES
    CCN(CC1=CC=CC=C1)C2=CC=C(C=C2)C(=C3C=CC(=[N+](CC)CC4=CC=CC=C4)C=C3)C5=C(C=C(C=C5)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 44.73%
    Fruity 29.6%
    Fresh 23.12%
    Cooked 22.55%
    Savory 21.21%
    Grape 21.07%
    Green 21.02%
    Fatty 19.99%
    Bitter 19.58%
    Citrus 18.77%

     

    Flavor
    Bitter 83.41%
    Odorless 23.72%
    Nitrile 20.48%
    Cedarleaf 17.97%
    Oriental 17.89%
    Lovage 17.87%
    Very strong 17.77%
    Heather 17.73%
    Genet 17.66%
    Indole 17.6%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.72 (weak acid)

    Molecular weight
    690.8 g/mol

    Flash point

    • 328.99 ˚C est.

  • Synonyms

    • Acid blue 7
    • 3486-30-4
    • Patent Blue A
    • Fenazo bluexg
    • Erio Glaucine X
    • Acid Sky Blue O
    • Acid Turquoise Blue A
    • Hidacid Blue A
    • Carmine Blue AF
    • Hidacid Blue AF
    • Patent Blue AF
    • Vulcol Blue BZ
    • Xylene Blue AS
    • C.I. ACID BLUE 7
    • Calcocid Blue AX
    • Erio Glaucine XC
    • Erio Glaucine XS
    • Kiton Blue A
    • Acid Blue O
    • Lake Blue AFX
    • Merantine Blue AF
    • Disulphine Blue AN
    • C.I. Acid Blue 7, sodium salt
    • Kayacyl Pure Blue FGA
    • Brilliant Acid Blue AS
    • Bucacid Patent Blue AF
    • Disulphine Lake Blue AN
    • Sandolan Turquoise E-AS
    • Tertracid Carmine Blue A
    • Blekit turkusowy A
    • C.I. 42080
    • D and C Blue No. 3
    • Pontacyl Brilliant Blue A
    • Shimazaki Patent Blue AFX
    • Brilliant Acid Blue N Extra
    • Blekit turkusowy A [Polish]
    • Ext D and C Blue No. 3
    • Aizen Brilliant Acid Blue AFH
    • CI 42080
    • EINECS 222-476-0
    • 014OZV4W1O
    • UNII-014OZV4W1O
    • D&C BLUE NO. 3 (DELISTED)
    • Benzenemethanaminium, N-(4-((2,4-disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, sodium salt
    • Benzenemethanaminium, N-(4-((2,4-disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, inner salt, sodium salt (1:1)
    • Sodium 4-((4-(benzyl(ethyl)amino)phenyl)(4-(benzyl(ethyl)iminio)cyclohexa-2,5-dien-1-ylidene)methyl)benzene-1,3-disulfonate
    • SODIUM 4-((4-(BENZYL-ETHYLAMINO)PHENYL)-(4-(BENZYL-ETHYLAZANIUMYLIDENE)-1-CYCLOHEXA-2,5-DIENYLIDENE)METHYL)BENZENE-1,3-DISULFONATE
    • Fenazo Blue XG
    • Benzenemethanaminium, N-[4-[(2,4-disulfophenyl)[4-[ethyl(phenylmethyl)amino]phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-, inner salt, sodium salt (1:1)
    • Sandolan Turquoise EAS
    • RefChem:109236
    • C.I. Acid Blue 7 (7CI)
    • CI 42080 [INCI]
    • C.I. Acid Blue 7, sodium salt (8CI)
    • 222-476-0
    • Benzenemethanaminium, N(4((2,4disulfophenyl)(4(ethyl(phenylmethyl)amino)phenyl)methylene)2,5cyclohexadien1ylidene)Nethyl, inner salt, sodium salt
    • Benzenemethanaminium, N-(4-((2,4-disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)meth-ylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, sodium salt
    • Hydrogen (benzyl)(4((4(benzylethylamino)phenyl)(2,4disulphonatophenyl)methylene)cyclohexa2,5dien1ylidene)(ethyl)ammonium, sodium salt
    • N(4((2,4Disulfophenyl)(4(ethyl(phenylmethyl)amino)phenyl)meth ylene)2,5cyclohexadien1ylidene)Nethylbenzenemethanaminium hydroxide, inner salt, sodium salt
    • N-(4-((2,4-Disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)meth-ylene)-2,5-cyclohexadien-1-ylidene)-N-ethylbenzenemethanaminium hydroxide, inner salt, sodium salt
    • Patent Blue A (VAN)
    • ALPHAZURINEA
    • MFCD00044440
    • sodium;4-[[4-[benzyl(ethyl)amino]phenyl]-[4-[benzyl(ethyl)azaniumylidene]cyclohexa-2,5-dien-1-ylidene]methyl]benzene-1,3-disulfonate
    • 1264431-24-4
    • Alphazurin A
    • 4-({4-[ethylbenzylamino]phenyl}{4-[ethylbenzylylidene]cyclohexa-2,5-dienyliden e}methyl)benzene-1,3-disulfonic acid, sodium salt
    • SCHEMBL22902
    • SCHEMBL341270
    • Acid Blue 7, Patent Blue A
    • SCHEMBL29429618
    • DTXSID80881399
    • MSK5904
    • Alphazurine A, Dye content 40 %
    • CI 428
    • SBB057258
    • AKOS000283053
    • AKOS015903290
    • FP52704
    • Benzenemethanaminium, N-(4-((2,4-disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)meth- ylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, hydroxide, inner salt, sodium salt
    • Benzenemethanaminium, N-(4-((2,4-disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, inner salt, sodium salt
    • Hydrogen (benzyl)(4-((4-(benzylethylamino)phenyl)(2,4-disulphonatophenyl)methylene)cyclohexa-2,5-dien-1-ylidene)(ethyl)ammonium, sodium salt
    • N-(4-((2,4-Disulfophenyl)(4-(ethyl(phenylmethyl)amino)phenyl)meth- ylene)-2,5-cyclohexadien-1-ylidene)-N-ethylbenzenemethanaminium hydroxide, inner salt, sodium salt
    • ST50410041
    • Q27231401
    • 94082-73-2
    • Sodium 4-[(E)-{4-[benzyl(ethyl)amino]phenyl}{(4E)-4-[benzyl(ethyl)iminio]cyclohexa-2,5-dien-1-ylidene}methyl]benzene-1,3-disulfonate
    • sodium;4-[[4-[benzyl(ethyl)amino]phenyl]-[4-[benzyl(ethyl)iminio]cyclohexa-2,5-dien-1-ylidene]methyl]benzene-1,3-disulfonate
    • Sodium4-((4-(benzyl(ethyl)amino)phenyl)(4-(benzyl(ethyl)iminio)cyclohexa-2,5-dien-1-ylidene)methyl)benzene-1,3-disulfonate
    • 3486-30-4

  • Applications

    Acid Blue 7 (CAS 3486-30-4) is a water-soluble acid dye commonly used as a colorant for protein fibers and certain synthetic fibers in the textile sector, and as a colorant in printing inks, coatings, and plastics to impart blue hues. It is also employed for coloring paper and various polymer products, and may serve as a staining or analytical dye in biological and laboratory contexts, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.56
    methanol 1.38
    isopropanol 0.28
    water 0.0
    ethyl acetate 0.63
    n-propanol 0.62
    acetone 1.35
    n-butanol 0.38
    acetonitrile 0.46
    DMF 14.37
    toluene 0.25
    isobutanol 0.27
    1,4-dioxane 1.55
    methyl acetate 1.17
    THF 3.71
    2-butanone 2.01
    n-pentanol 0.29
    sec-butanol 0.39
    n-hexane 0.0
    ethylene glycol 0.35
    NMP 14.26
    cyclohexane 0.01
    DMSO 3.24
    n-butyl acetate 0.43
    n-octanol 0.17
    chloroform 4.33
    n-propyl acetate 0.56
    acetic acid 2.19
    dichloromethane 3.41
    cyclohexanone 2.19
    propylene glycol 0.96
    isopropyl acetate 0.38
    DMAc 19.58
    2-ethoxyethanol 2.12
    isopentanol 0.2
    n-heptane 0.01
    ethyl formate 1.01
    1,2-dichloroethane 1.08
    n-hexanol 0.15
    2-methoxyethanol 3.75
    isobutyl acetate 0.27
    tetrachloromethane 0.16
    n-pentyl acetate 0.65
    transcutol 2.74
    n-heptanol 0.21
    ethylbenzene 0.09
    MIBK 0.39
    2-propoxyethanol 2.13
    tert-butanol 0.18
    MTBE 0.21
    2-butoxyethanol 1.49
    propionic acid 1.44
    o-xylene 0.15
    formic acid 1.9
    diethyl ether 0.28
    m-xylene 0.13
    p-xylene 0.13
    chlorobenzene 0.45
    dimethyl carbonate 1.59
    n-octane 0.0
    formamide 2.75
    cyclopentanone 4.27
    2-pentanone 0.95
    anisole 0.6
    cyclopentyl methyl ether 0.55
    gamma-butyrolactone 4.93
    1-methoxy-2-propanol 3.14
    pyridine 2.55
    3-pentanone 0.95
    furfural 5.9
    n-dodecane 0.0
    diethylene glycol 1.39
    diisopropyl ether 0.04
    tert-amyl alcohol 0.28
    acetylacetone 1.71
    n-hexadecane 0.0
    acetophenone 1.09
    methyl propionate 1.35
    isopentyl acetate 0.33
    trichloroethylene 4.94
    n-nonanol 0.2
    cyclohexanol 0.25
    benzyl alcohol 0.91
    2-ethylhexanol 0.1
    isooctanol 0.14
    dipropyl ether 0.24
    1,2-dichlorobenzene 0.49
    ethyl lactate 1.01
    propylene carbonate 1.71
    n-methylformamide 4.43
    2-pentanol 0.17
    n-pentane 0.01
    1-propoxy-2-propanol 1.47
    1-methoxy-2-propyl acetate 1.23
    2-(2-methoxypropoxy) propanol 1.71
    mesitylene 0.06
    ε-caprolactone 2.26
    p-cymene 0.07
    epichlorohydrin 4.26
    1,1,1-trichloroethane 0.56
    2-aminoethanol 0.81
    morpholine-4-carbaldehyde 10.71
    sulfolane 7.18
    2,2,4-trimethylpentane 0.0
    2-methyltetrahydrofuran 0.81
    n-hexyl acetate 0.57
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 1.63
    sec-butyl acetate 0.3
    tert-butyl acetate 0.36
    decalin 0.0
    glycerin 2.2
    diglyme 3.39
    acrylic acid 2.18
    isopropyl myristate 0.15
    n-butyric acid 1.27
    acetyl acetate 0.57
    di(2-ethylhexyl) phthalate 0.43
    ethyl propionate 0.54
    nitromethane 4.55
    1,2-diethoxyethane 0.67
    benzonitrile 0.62
    trioctyl phosphate 0.21
    1-bromopropane 0.31
    gamma-valerolactone 10.58
    n-decanol 0.11
    triethyl phosphate 0.33
    4-methyl-2-pentanol 0.08
    propionitrile 0.53
    vinylene carbonate 2.51
    1,1,2-trichlorotrifluoroethane 10.04
    DMS 0.97
    cumene 0.05
    2-octanol 0.12
    2-hexanone 0.71
    octyl acetate 0.28
    limonene 0.08
    1,2-dimethoxyethane 3.05
    ethyl orthosilicate 0.3
    tributyl phosphate 0.23
    diacetone alcohol 1.05
    N,N-dimethylaniline 0.46
    acrylonitrile 1.23
    aniline 0.65
    1,3-propanediol 0.94
    bromobenzene 0.38
    dibromomethane 1.11
    1,1,2,2-tetrachloroethane 3.7
    2-methyl-cyclohexyl acetate 0.38
    tetrabutyl urea 0.53
    diisobutyl methanol 0.05
    2-phenylethanol 0.53
    styrene 0.15
    dioctyl adipate 0.46
    dimethyl sulfate 3.28
    ethyl butyrate 0.47
    methyl lactate 2.56
    butyl lactate 1.17
    diethyl carbonate 0.35
    propanediol butyl ether 1.59
    triethyl orthoformate 0.51
    p-tert-butyltoluene 0.06
    methyl 4-tert-butylbenzoate 1.25
    morpholine 2.56
    tert-butylamine 0.06
    n-dodecanol 0.07
    dimethoxymethane 4.26
    ethylene carbonate 1.26
    cyrene 3.05
    2-ethoxyethyl acetate 1.63
    2-ethylhexyl acetate 0.27
    1,2,4-trichlorobenzene 0.91
    4-methylpyridine 1.69
    dibutyl ether 0.15
    2,6-dimethyl-4-heptanol 0.05
    DEF 2.46
    dimethyl isosorbide 2.45
    tetrachloroethylene 1.91
    eugenol 1.62
    triacetin 1.45
    span 80 1.35
    1,4-butanediol 0.41
    1,1-dichloroethane 0.78
    2-methyl-1-pentanol 0.19
    methyl formate 3.11
    2-methyl-1-butanol 0.3
    n-decane 0.01
    butyronitrile 0.41
    3,7-dimethyl-1-octanol 0.11
    1-chlorooctane 0.06
    1-chlorotetradecane 0.02
    n-nonane 0.01
    undecane 0.01
    tert-butylcyclohexane 0.0
    cyclooctane 0.0
    cyclopentanol 0.51
    tetrahydropyran 0.65
    tert-amyl methyl ether 0.25
    2,5,8-trioxanonane 2.25
    1-hexene 0.04
    2-isopropoxyethanol 1.02
    2,2,2-trifluoroethanol 1.15
    methyl butyrate 0.87

    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