2-(1,3-Dioxo-2,3-dihydro-1H-inden-2-yl)quinoline-6,8-disulfonic acid

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  • Identifiers

    CAS number
    94803-32-4

    Molecular formula
    C18H11NO8S2

    SMILES
    C1=CC=C2C(=C1)C(=O)C(C2=O)C3=NC4=C(C=C(C=C4C=C3)S(=O)(=O)O)S(=O)(=O)O

  • Odor profile

    Fragrance
    Odorless 84.06%
    Burnt 21.36%
    Cooked 20.51%
    Bitter 19.21%
    Savory 16.75%
    Roasted 15.67%
    Clean 13.63%
    Nutty 12.51%
    Pungent 12.37%
    Aromatic 11.65%

     

    Flavor
    Bitter 92.47%
    Odorless 31.6%
    Bland 20.64%
    Nitrile 19.26%
    Very strong 17.43%
    Cedarleaf 17.27%
    Sweet-like 17.19%
    Lovage 17.18%
    Indole 17.17%
    Bread crust 17.14%

     

    Odor impact est.
    Low

  • Properties

    XLogP3-AA
    0.9

    pKa est.
    4.76 (weak acid)

    Molecular weight
    433.4 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Ultra slow

    Boiling point est.
    1001°C

    Flash point

    • 347.13 ˚C est.

  • Synonyms

    • 94803-32-4
    • 2-(1,3-dioxo-2,3-dihydro-1h-inden-2-yl)quinoline-6,8-disulfonic acid
    • G5MIQ8Q13H
    • UNII-G5MIQ8Q13H
    • 6,8-Quinolinedisulfonic acid, 2-(2,3-dihydro-1,3-dioxo-1H-inden-2-yl)-
    • DTXSID10873126
    • Chinogelb
    • Chinogelb Extra
    • 6,8-Quinolinedisulfonic acid, 2-(1,3-dioxo-2-indanyl)-
    • Quinoline Yellow S
    • Jaune de quinoleine
    • Food Yellow 13
    • Quinidine Yellow KT
    • Dye Quinoline Yellow
    • Japan Yellow 203
    • Lemon Yellow ZN 3
    • Basacid Yellow 094
    • Schultz No. 918
    • Quinoline Yellow Extra
    • L-Gelb 3
    • D&C Yellow No. 10
    • D and C Yellow No. 10
    • D & C Yellow no. 10
    • FD and C Yellow No. 10
    • Vitasyn Quinoline Yellow 70
    • CI 47005
    • 2-(2-Quinolyl)-1,3-indandione disulfonic acid disodium salt
    • Yellow 203 Aluminum Lake
    • C.I. Acid yellow 3, 9CI
    • SCHEMBL5356629
    • CHEMBL3306382
    • DTXCID7027964
    • PD094565
    • NS00019538

  • Applications

    2-(1,3-Dioxo-2,3-dihydro-1H-inden-2-yl)quinoline-6,8-disulfonic acid (CAS 94803-32-4) is primarily used as an intermediate in the synthesis of water-soluble dyes and pigments, especially for textiles, paper, and printing inks. Its disulfonic acid groups confer solubility, allowing it to serve as a colorant component in waterborne coatings and paints. The compound may also be evaluated as a dye additive or functional chromophore in polymer and plastics formulations. In analytical and research settings, the quinoline-based chromophore offers potential as a fluorescent probe or marker for laboratory assays. As with related sulfonated heteroaromatic dyes, its use is governed by formulation controls and local regulatory requirements.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 1.04
    methanol 1.95
    isopropanol 0.67
    water 0.22
    ethyl acetate 0.45
    n-propanol 0.96
    acetone 1.89
    n-butanol 0.49
    acetonitrile 1.92
    DMF 82.9
    toluene 0.12
    isobutanol 0.4
    1,4-dioxane 4.61
    methyl acetate 1.21
    THF 8.22
    2-butanone 2.19
    n-pentanol 0.37
    sec-butanol 0.51
    n-hexane 0.01
    ethylene glycol 7.58
    NMP 43.15
    cyclohexane 0.02
    DMSO 23.95
    n-butyl acetate 0.83
    n-octanol 0.52
    chloroform 0.05
    n-propyl acetate 0.85
    acetic acid 2.0
    dichloromethane 0.11
    cyclohexanone 2.93
    propylene glycol 4.38
    isopropyl acetate 0.37
    DMAc 45.64
    2-ethoxyethanol 7.23
    isopentanol 0.28
    n-heptane 0.03
    ethyl formate 1.01
    1,2-dichloroethane 0.16
    n-hexanol 0.32
    2-methoxyethanol 21.9
    isobutyl acetate 0.32
    tetrachloromethane 0.01
    n-pentyl acetate 0.99
    transcutol 10.23
    n-heptanol 0.66
    ethylbenzene 0.08
    MIBK 0.49
    2-propoxyethanol 8.39
    tert-butanol 0.38
    MTBE 0.13
    2-butoxyethanol 5.32
    propionic acid 1.81
    o-xylene 0.1
    formic acid 7.49
    diethyl ether 0.35
    m-xylene 0.08
    p-xylene 0.12
    chlorobenzene 0.08
    dimethyl carbonate 2.16
    n-octane 0.02
    formamide 16.21
    cyclopentanone 8.74
    2-pentanone 1.04
    anisole 0.45
    cyclopentyl methyl ether 0.86
    gamma-butyrolactone 10.71
    1-methoxy-2-propanol 12.15
    pyridine 3.76
    3-pentanone 0.88
    furfural 10.16
    n-dodecane 0.02
    diethylene glycol 14.66
    diisopropyl ether 0.06
    tert-amyl alcohol 0.3
    acetylacetone 1.96
    n-hexadecane 0.03
    acetophenone 1.12
    methyl propionate 1.37
    isopentyl acetate 0.55
    trichloroethylene 0.25
    n-nonanol 0.6
    cyclohexanol 0.41
    benzyl alcohol 0.9
    2-ethylhexanol 0.22
    isooctanol 0.42
    dipropyl ether 0.69
    1,2-dichlorobenzene 0.09
    ethyl lactate 2.11
    propylene carbonate 1.98
    n-methylformamide 16.87
    2-pentanol 0.24
    n-pentane 0.01
    1-propoxy-2-propanol 5.16
    1-methoxy-2-propyl acetate 2.29
    2-(2-methoxypropoxy) propanol 4.2
    mesitylene 0.05
    ε-caprolactone 3.0
    p-cymene 0.11
    epichlorohydrin 4.26
    1,1,1-trichloroethane 0.03
    2-aminoethanol 5.77
    morpholine-4-carbaldehyde 42.5
    sulfolane 15.63
    2,2,4-trimethylpentane 0.0
    2-methyltetrahydrofuran 1.36
    n-hexyl acetate 0.85
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 6.39
    sec-butyl acetate 0.34
    tert-butyl acetate 0.36
    decalin 0.01
    glycerin 20.97
    diglyme 11.83
    acrylic acid 3.67
    isopropyl myristate 0.42
    n-butyric acid 0.88
    acetyl acetate 0.33
    di(2-ethylhexyl) phthalate 0.8
    ethyl propionate 0.67
    nitromethane 8.05
    1,2-diethoxyethane 1.62
    benzonitrile 1.0
    trioctyl phosphate 0.6
    1-bromopropane 0.06
    gamma-valerolactone 26.42
    n-decanol 0.47
    triethyl phosphate 0.51
    4-methyl-2-pentanol 0.12
    propionitrile 1.36
    vinylene carbonate 2.09
    1,1,2-trichlorotrifluoroethane 6.5
    DMS 1.23
    cumene 0.05
    2-octanol 0.36
    2-hexanone 1.02
    octyl acetate 0.72
    limonene 0.12
    1,2-dimethoxyethane 10.38
    ethyl orthosilicate 0.42
    tributyl phosphate 0.57
    diacetone alcohol 1.87
    N,N-dimethylaniline 0.48
    acrylonitrile 3.76
    aniline 0.51
    1,3-propanediol 4.5
    bromobenzene 0.04
    dibromomethane 0.05
    1,1,2,2-tetrachloroethane 0.27
    2-methyl-cyclohexyl acetate 0.69
    tetrabutyl urea 1.78
    diisobutyl methanol 0.14
    2-phenylethanol 0.98
    styrene 0.09
    dioctyl adipate 0.92
    dimethyl sulfate 4.06
    ethyl butyrate 0.77
    methyl lactate 5.92
    butyl lactate 2.27
    diethyl carbonate 0.55
    propanediol butyl ether 5.38
    triethyl orthoformate 0.87
    p-tert-butyltoluene 0.09
    methyl 4-tert-butylbenzoate 1.96
    morpholine 8.63
    tert-butylamine 0.1
    n-dodecanol 0.34
    dimethoxymethane 13.06
    ethylene carbonate 1.43
    cyrene 8.23
    2-ethoxyethyl acetate 2.24
    2-ethylhexyl acetate 0.46
    1,2,4-trichlorobenzene 0.17
    4-methylpyridine 1.55
    dibutyl ether 0.41
    2,6-dimethyl-4-heptanol 0.14
    DEF 3.85
    dimethyl isosorbide 8.34
    tetrachloroethylene 0.15
    eugenol 3.29
    triacetin 2.18
    span 80 3.07
    1,4-butanediol 2.15
    1,1-dichloroethane 0.05
    2-methyl-1-pentanol 0.21
    methyl formate 8.4
    2-methyl-1-butanol 0.3
    n-decane 0.03
    butyronitrile 0.71
    3,7-dimethyl-1-octanol 0.25
    1-chlorooctane 0.11
    1-chlorotetradecane 0.06
    n-nonane 0.03
    undecane 0.03
    tert-butylcyclohexane 0.0
    cyclooctane 0.01
    cyclopentanol 1.25
    tetrahydropyran 1.12
    tert-amyl methyl ether 0.19
    2,5,8-trioxanonane 8.66
    1-hexene 0.04
    2-isopropoxyethanol 2.93
    2,2,2-trifluoroethanol 1.67
    methyl butyrate 1.02

    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