Acid Green 25

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  • Identifiers

    CAS number
    4403-90-1

    Molecular formula
    C28H20N2Na2O8S2

    SMILES
    CC1=CC(=C(C=C1)NC2=C3C(=C(C=C2)NC4=C(C=C(C=C4)C)S(=O)(=O)[O-])C(=O)C5=CC=CC=C5C3=O)S(=O)(=O)[O-].[Na+].[Na+]

    Safety labels

    Irritant
    Irritant

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Odorless 71.5%
    Fruity 25.57%
    Grape 24.54%
    Cooked 21.53%
    Bitter 21.06%
    Savory 19.43%
    Milky 15.16%
    Burnt 15.12%
    Fatty 13.6%
    Clean 13.14%

     

    Flavor
    Bitter 93.62%
    Odorless 31.14%
    Bland 19.71%
    Nitrile 19.58%
    Very strong 18.16%
    Indole 17.88%
    Sweet-like 17.74%
    Cedarleaf 17.61%
    Lovage 17.35%
    Taco 17.29%

     

    Odor impact est.
    Odorless

  • Properties

    pKa est.
    1.48 (strong acid)

    Molecular weight
    622.6 g/mol

    Melting point expt.

    • 455 to 460 °F (NTP, 1992)
    • 235-238 °C

    Flash point

    • 338.9 ˚C est.

    Solubility expt.

    • 5 to 10 mg/mL at 70 °F (NTP, 1992)
    • Slightly soluble in acetone, alcohol, pyridine. Insoluble in chloroform, toluene.
    • In 2-methoxyethanol 30 mg/mL, ethanol 2 mg/mL, temperature not specified
    • In water, 60 mg/mL, temperature not specified

  • Synonyms

    • Acid Green 25
    • 4403-90-1
    • D&C Green No. 5
    • Alizarin Cyanine Green F
    • Solway Green GA
    • Erionyl Green GL
    • Alizarine Green J
    • Aquamine Green GL
    • Alizarine Green CE
    • Alizarine Green CG
    • Airedale Green ACG
    • C.I. ACID GREEN 25
    • Diachromate Green G
    • Erio Fast Green GS
    • D & C Green No. 5
    • Anthraquinone Green G
    • Neutral Fast Green G
    • Nylosan Green CP-GL
    • Tertrochrome Green CG
    • Fenazo Fast Green AG
    • Fenazo Fast Green AN
    • Acid Leather Green AG
    • Bucacid Fast Green GS
    • Diacid Light Green GS
    • Eriosin Fast Green GL
    • Ortol Green B
    • Solway Green GN
    • Alizarine Fast Green G
    • Curolite Green G
    • Diacid Cyanine Green G
    • Anthraquinone Green GNN
    • Nylomine Acid Green CB
    • Nylomine Acid Green PG
    • Acid Green Anthraquinone
    • Kayanol Cyanine Green G
    • Alizarine Fast Green CG
    • Alizarine Fast Green GN
    • Coomassie Fast Green GN
    • Coomassie Fast Green GW
    • Alizarin Cyanine Green G
    • Synchromate Fast Green B
    • Alizarine Fast Green CGN
    • Alizarine Light Green GS
    • Neutral Cyanine Green GN
    • Tertracid Light Green CG
    • Alizarine Cyanine Green G
    • Chrome Green Anthraquinone
    • D and C Green No. 5
    • Alizarine Light Green GNS
    • Alizarine Light Green GSN
    • Alizarine Cyanine Green CG
    • Alizarine Neutral Green CE
    • Alizarine Neutral Green CG
    • Erio Fast Cyanine Green G
    • Synchromate Fast Green GGW
    • Ahcoquinone Cyanine Green G
    • Alizarine Brilliant Green G
    • Calcocid Alizarine Green CG
    • Ahcoquinone Cyanine Green GN
    • Alizarine Brilliant Green EF
    • Calcocid Alizarine Green CGN
    • Alizarine Cyanine Green G-CF
    • Suminol Fast Cyanine Green G
    • Green No. 201
    • Mitsui Alizarine Fast Green GX
    • Alizarine Cyanine Green GHN-CF
    • Alizarine Fast Printing Green G
    • Alizarine Green G
    • 11359 Green
    • Kayaku Alizarine Cyanine Green G
    • Mitsui Alizarine Cyanine Green G
    • Shimazaki Nylon Cyanine Green GN
    • CI 61570
    • Belacid Alizarine Cyanine Green GN
    • C.I. Acid Green 25 disodium salt
    • 8J6RDU8L9X
    • Shimazaki Alizarine Cyanine Green GS
    • D & C green 5
    • VIBRACOLOR GREEN AGR5
    • C.I. 61570
    • COVACAP VERT W 7103
    • DTXSID2024903
    • NSC-7795
    • m-Toluenesulfonic acid, 6,6'-(1,4-anthraquinonylenediimino)di-, disodium salt
    • NSC-41838
    • Alizarine Direct Green G
    • Benzenesulfonic acid, 2,2'-((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(5-methyl-, sodium salt (1:2)
    • DC green 5
    • 6,6'-(1,4-anthraquinonylenediimino)di-m-toluenesulfonic acid disodium salt
    • alizarin brilliant green
    • RefChem:581444
    • DTXCID404903
    • 224-546-6
    • Alizarin Cyanin Green F
    • Solway Green G
    • Alizarin Cyanine Green
    • Benzenesulfonic acid,2,2'-[(9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino]bis[5-methyl-,disodium salt
    • Alizarine Cyanone Green G
    • Alizarine Cyanone Green GN
    • NSC 7795
    • Disodium 2,2'-(9,10-dioxoanthracene-1,4-diyldiimino)bis(5-methylsulphonate)
    • MFCD00001193
    • Sodium 6,6'-((9,10-dioxo-9,10-dihydroanthracene-1,4-diyl)bis(azanediyl))bis(3-methylbenzenesulfonate)
    • Alizarine Cyanone Green B (Biological stain)
    • Zelen alizarinova brilantni g-extra
    • C.I. 61 570
    • Alizarine Green G (VAN)
    • Zelen kysela 25 [Czech]
    • Zelen kysela 25
    • Alizarine Direct Green G (VAN)
    • C.I. 61 570 [Czech]
    • EINECS 224-546-6
    • NSC 41838
    • UNII-8J6RDU8L9X
    • Zelen alizarinova brilantni G-extra [Czech]
    • HSDB 8005
    • Alizarin cyanin green
    • 1,4-Bis(o-sulfo-p-toluino)anthraquinone, disodium salt
    • MIDORI201
    • DC GREEN NO. 5
    • 2,2'-(1,4-Anthraquinonylenediimino)bis(5-methylbenzenesulfonic acid) disodium salt
    • Benzenesulfonic acid, 2,2'-((9,10-dihydro-9,10-dioxo-1,4-anthracenediyl)diimino)bis(5-methyl-, disodium salt
    • SCHEMBL126076
    • orb1306730
    • SCHEMBL29350751
    • MSK5909
    • D&C GREEN NO. 5 [II]
    • 4403-90-1

  • Applications

    Acid Green 25 (CAS 4403-90-1) is an acid dye primarily used as a colorant for protein-based textiles, notably wool and silk, with dyeing conducted under acidic conditions; it can also dye nylon fibers under similar conditions. It is used for leather dyeing and finishing. In industrial manufacturing, it is commonly employed as a colorant in printing inks and coatings, and is incorporated into polymer systems, including masterbatches for plastics and synthetic fibers, to impart color. It may also be considered for specialty dye formulations within coatings and packaging.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.74
    methanol 0.74
    isopropanol 0.42
    water 0.0
    ethyl acetate 1.3
    n-propanol 0.71
    acetone 3.02
    n-butanol 0.45
    acetonitrile 0.92
    DMF 13.25
    toluene 0.59
    isobutanol 0.38
    1,4-dioxane 2.85
    methyl acetate 1.95
    THF 10.93
    2-butanone 4.5
    n-pentanol 0.32
    sec-butanol 0.45
    n-hexane 0.01
    ethylene glycol 0.24
    NMP 17.59
    cyclohexane 0.02
    DMSO 5.6
    n-butyl acetate 1.17
    n-octanol 0.27
    chloroform 4.09
    n-propyl acetate 0.99
    acetic acid 1.69
    dichloromethane 3.14
    cyclohexanone 6.2
    propylene glycol 0.38
    isopropyl acetate 0.86
    DMAc 18.73
    2-ethoxyethanol 1.46
    isopentanol 0.28
    n-heptane 0.02
    ethyl formate 1.36
    1,2-dichloroethane 1.66
    n-hexanol 0.26
    2-methoxyethanol 3.12
    isobutyl acetate 0.47
    tetrachloromethane 0.22
    n-pentyl acetate 1.1
    transcutol 1.89
    n-heptanol 0.3
    ethylbenzene 0.17
    MIBK 0.86
    2-propoxyethanol 2.31
    tert-butanol 0.29
    MTBE 0.38
    2-butoxyethanol 1.53
    propionic acid 1.33
    o-xylene 0.27
    formic acid 1.15
    diethyl ether 0.57
    m-xylene 0.24
    p-xylene 0.25
    chlorobenzene 0.78
    dimethyl carbonate 1.78
    n-octane 0.01
    formamide 2.18
    cyclopentanone 11.93
    2-pentanone 2.0
    anisole 0.61
    cyclopentyl methyl ether 1.15
    gamma-butyrolactone 10.49
    1-methoxy-2-propanol 2.17
    pyridine 5.54
    3-pentanone 1.89
    furfural 6.74
    n-dodecane 0.01
    diethylene glycol 1.21
    diisopropyl ether 0.08
    tert-amyl alcohol 0.34
    acetylacetone 3.11
    n-hexadecane 0.02
    acetophenone 1.37
    methyl propionate 2.11
    isopentyl acetate 0.84
    trichloroethylene 5.84
    n-nonanol 0.31
    cyclohexanol 0.4
    benzyl alcohol 0.8
    2-ethylhexanol 0.18
    isooctanol 0.21
    dipropyl ether 0.46
    1,2-dichlorobenzene 0.61
    ethyl lactate 0.82
    propylene carbonate 3.08
    n-methylformamide 3.96
    2-pentanol 0.2
    n-pentane 0.01
    1-propoxy-2-propanol 1.55
    1-methoxy-2-propyl acetate 1.84
    2-(2-methoxypropoxy) propanol 1.6
    mesitylene 0.11
    ε-caprolactone 4.21
    p-cymene 0.14
    epichlorohydrin 8.09
    1,1,1-trichloroethane 1.02
    2-aminoethanol 0.54
    morpholine-4-carbaldehyde 9.65
    sulfolane 13.04
    2,2,4-trimethylpentane 0.01
    2-methyltetrahydrofuran 2.59
    n-hexyl acetate 0.95
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 1.63
    sec-butyl acetate 0.54
    tert-butyl acetate 0.77
    decalin 0.01
    glycerin 0.89
    diglyme 3.03
    acrylic acid 1.71
    isopropyl myristate 0.39
    n-butyric acid 1.44
    acetyl acetate 0.92
    di(2-ethylhexyl) phthalate 0.62
    ethyl propionate 0.94
    nitromethane 4.55
    1,2-diethoxyethane 0.95
    benzonitrile 1.23
    trioctyl phosphate 0.43
    1-bromopropane 0.66
    gamma-valerolactone 14.68
    n-decanol 0.23
    triethyl phosphate 0.5
    4-methyl-2-pentanol 0.1
    propionitrile 1.16
    vinylene carbonate 3.13
    1,1,2-trichlorotrifluoroethane 6.28
    DMS 1.22
    cumene 0.09
    2-octanol 0.19
    2-hexanone 1.47
    octyl acetate 0.63
    limonene 0.2
    1,2-dimethoxyethane 2.99
    ethyl orthosilicate 0.4
    tributyl phosphate 0.48
    diacetone alcohol 1.51
    N,N-dimethylaniline 0.42
    acrylonitrile 2.36
    aniline 1.0
    1,3-propanediol 0.94
    bromobenzene 0.65
    dibromomethane 1.51
    1,1,2,2-tetrachloroethane 4.04
    2-methyl-cyclohexyl acetate 0.74
    tetrabutyl urea 1.13
    diisobutyl methanol 0.11
    2-phenylethanol 0.82
    styrene 0.25
    dioctyl adipate 0.75
    dimethyl sulfate 3.02
    ethyl butyrate 0.95
    methyl lactate 1.77
    butyl lactate 1.09
    diethyl carbonate 0.59
    propanediol butyl ether 0.93
    triethyl orthoformate 0.75
    p-tert-butyltoluene 0.13
    methyl 4-tert-butylbenzoate 1.48
    morpholine 3.93
    tert-butylamine 0.1
    n-dodecanol 0.16
    dimethoxymethane 4.35
    ethylene carbonate 2.05
    cyrene 2.61
    2-ethoxyethyl acetate 1.74
    2-ethylhexyl acetate 0.69
    1,2,4-trichlorobenzene 1.12
    4-methylpyridine 3.26
    dibutyl ether 0.34
    2,6-dimethyl-4-heptanol 0.11
    DEF 3.36
    dimethyl isosorbide 3.06
    tetrachloroethylene 1.92
    eugenol 1.6
    triacetin 1.28
    span 80 1.3
    1,4-butanediol 0.28
    1,1-dichloroethane 1.34
    2-methyl-1-pentanol 0.23
    methyl formate 2.99
    2-methyl-1-butanol 0.33
    n-decane 0.02
    butyronitrile 0.95
    3,7-dimethyl-1-octanol 0.2
    1-chlorooctane 0.16
    1-chlorotetradecane 0.07
    n-nonane 0.02
    undecane 0.02
    tert-butylcyclohexane 0.01
    cyclooctane 0.01
    cyclopentanol 0.99
    tetrahydropyran 1.77
    tert-amyl methyl ether 0.38
    2,5,8-trioxanonane 2.29
    1-hexene 0.08
    2-isopropoxyethanol 0.81
    2,2,2-trifluoroethanol 0.82
    methyl butyrate 1.4

    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