C.I. Acid Green 3

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  • Identifiers

    CAS number
    4680-78-8

    Molecular formula
    C37H35N2NaO6S2

    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=C3)C5=CC=CC=C5.[Na+]

    Safety labels

  • Odor profile

    Fragrance
    Odorless 43.34%
    Fruity 30.67%
    Cooked 23.24%
    Fresh 22.44%
    Savory 21.84%
    Green 20.67%
    Grape 20.42%
    Fatty 20.19%
    Roasted 19.81%
    Bitter 19.5%

     

    Flavor
    Bitter 82.68%
    Odorless 23.21%
    Nitrile 20.39%
    Cedarleaf 18.06%
    Oriental 17.99%
    Lovage 17.87%
    Very strong 17.86%
    Heather 17.76%
    Genet 17.65%
    Indole 17.62%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    4.9 (weak acid)

    Molecular weight
    690.8 g/mol

    Melting point expt.

    • 255 °C (decomposes)

    Flash point

    • 347.92 ˚C est.

    Solubility expt.

    • In 2-methoxyethanol 20 mg/mL; in ethanol 9 mg/mL
    • In water, 30 mg/mL

  • Synonyms

    • Acid Green 3
    • Guinea green B
    • 4680-78-8
    • C.I. ACID GREEN 3
    • Food Green 1
    • Calcocid Green G
    • Pontacyl Green B
    • Acid Green B
    • FD&C Green no. 1
    • Leather Green B
    • Acidal Green G
    • Acilan Green B
    • Amacid Green B
    • Fenazo Green L
    • Guinea Green BA
    • Kiton Green F
    • Intracid Green F
    • Kiton Green FC
    • Vondacid Green L
    • Acid Green G
    • Acid Green L
    • Acid Green S
    • Sulpho Green 2B
    • C.I. Food Green 1
    • Japan Green 1
    • Lissamine Green G
    • Merantine Green G
    • Hispacid Green GB
    • Pontacyl Green BL
    • Acid Green 2G
    • CI Acid Green 1
    • CI Food Green 1
    • Naphthalene Green G
    • Acid Green L Extra
    • FDC Green 1
    • FD And C Green No. 1
    • Hidacid Emerald Green
    • Acid Blue 255
    • Acid Leather Green F
    • AF Green No. 1
    • Brillant Green 3EMBL
    • C.I. Acid Green 3, sodium salt
    • FD&C Green 1
    • Acid Leather Green 3G
    • Brilliant Green 3EMBL
    • Neran Brilliant Green G
    • Zelen kysela 3
    • Bucacid Guinea Green BA
    • Naphthalene Lake Green G
    • A.F. Green No. 1
    • C.I. 42085
    • Zelen kysela 3 [Czech]
    • Naphthalene Leather Green G
    • CI Acid Green 3 (VAN)
    • Sulfacid Brilliant Green 1B
    • Color Index No. 42085
    • Zelen potravinarska 1
    • C.I. Acid Green 3, monosodium salt
    • Zelen potravinarska 1 [Czech]
    • CI Acid Green 3, sodium salt
    • C.I. Acid Green 3 (VAN)
    • HSDB 6366
    • CI 42085
    • CI Acid Green 3, monsodium salt
    • NSC 5016
    • NSC 8684
    • EINECS 225-132-8
    • DTXSID3020671
    • MIDORI402
    • GUINEA GREEN B [II]
    • GUINEA GREEN B [MI]
    • DTXCID30671
    • GUINEA GREEN B [IARC]
    • Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)phenylmethylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, sodium salt
    • 4L2574620F
    • NSC-5016
    • NSC-8684
    • C.I. ACID GREEN 3 [HSDB]
    • FD&C GREEN NO. 1 (DELISTED)
    • N-Ethyl-(4-(p-(ethyl-(m-sulfobenzyl)amino)-alpha-phenylbenzylidene)-2,5-cyclohexadien-1-ylidene)(m-sulfobenzyl)ammonium hydroxide inner salt so dium salt
    • GUINEA GREEN B (II)
    • Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)phenylmethylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, inner salt, sodium salt
    • Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)phenylmethylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, inner salt, sodium salt (1:1)
    • GUINEA GREEN B (IARC)
    • ZELEN KYSELA 3 (CZECH)
    • ZELEN POTRAVINARSKA 1 (CZECH)
    • Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo-, hydroxide, inner salt, sodium salt
    • N-ETHYL-(4-(P-(ETHYL-(M-SULFOBENZYL)AMINO)-.ALPHA.-PHENYLBENZYLIDENE)-2,5-CYCLOHEXADIEN-1-YLIDENE)(M-SULFOBENZYL)AMMONIUM HYDROXIDE INNER SALT SODIUM SALT
    • BENZENEMETHANAMINIUM, N-ETHYL-N-(4-((4-(ETHYL((3-SULFOPHENYL)METHYL)AMINO)PHENYL)PHENYLMETHYLENE)-2,5-CYLCOHEXADIEN-1-YLIDENE)-3-SULFO-,INNER SALT,SODIUM SALT
    • Benzenemethanaminium, N-ethyl-N-[4-[[4-[ethyl[(3-sulfophenyl)methyl]amino]phenyl]phenylmethylene]-2,5-cyclohexadien-1-ylidene]-3-sulfo-, inner salt, sodium salt (1:1)
    • BENZENEMETHANAMINIUM, N-ETHYL-N-[4-[[4-[ETHYL[(3-SULFOPHENYL)METHYL]AMINO]PHENYL]PHENYLMETHYLENE]-2,5-CYLCOHEXADIEN-1-YLIDENE]-3-SULFO-,INNER SALT,SODIUM SALT
    • AF green no 1
    • CI Acid Green 3
    • FD and C green no 1
    • RefChem:572090
    • MIDORI402 [INCI]
    • C.I. Acid Green 3, sodium salt (8CI)
    • AMMONIUM, ETHYL(4-(P-(ETHYL(M-SULFOBENZYL)AMINO)-ALPHA-PHENYLBENZYLIDENE)-2,5-CYCLOHEXADIEN-1-YLIDENE)(M-SULFOBENZYL)-, HYDROXIDE, INNER SALT, SODIUM SALT
    • Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)phenylmeth-ylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, sodium salt
    • Benzenemethanaminium, NethylN(4((4(ethyl((3sulfophenyl)methyl)amino)phenyl)phenylmethylene)2,5cyclohexadien1ylidene)3sulfo, hydroxide, inner salt, sodium salt
    • N-ETHYL-(4-(P-(ETHYL-(M-SULFOBENZYL)AMINO)-ALPHA-PHENYLBENZYLIDENE)-2,5-CYCLOHEXADIEN-1-YLIDENE)(M-SULFOBENZYL)AMMONIUM HYDROXIDE INNER SALT SODIUM SALT
    • Guinee green B
    • Guinea Green
    • FD & C green no. 1
    • MFCD00012122
    • Acid Green 3 (~50%)
    • sodium 3-((ethyl((1E,4E)-4-((4-(ethyl(3-sulfonatobenzyl)amino)phenyl)(phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)ammonio)methyl)benzenesulfonate
    • sodium 3-[(ethyl{4-[(4-{ethyl[(3-sulfonatophenyl)methyl]amino}phenyl)(phenyl)methylidene]cyclohexa-2,5-dien-1-ylidene}azaniumyl)methyl]benzene-1-sulfonate
    • sodium;3-[[N-ethyl-4-[[4-[ethyl-[(3-sulfonatophenyl)methyl]azaniumylidene]cyclohexa-2,5-dien-1-ylidene]-phenylmethyl]anilino]methyl]benzenesulfonate
    • Guinee green
    • guinia green B
    • UNII-4L2574620F
    • Benzenemethanaminium, N-ethyl-N-(4-((4-(ethyl((3-sulfophenyl)methyl)amino)phenyl)phenylmeth- ylene)-2,5-cyclohexadien-1-ylidene)-3-sulfo-, hydroxide, inner salt, sodium salt
    • SCHEMBL590697
    • SCHEMBL2859161
    • CHEMBL1333604
    • CHEBI:90112
    • Tox21_301679
    • Guinea Green B, Dye content 50 %
    • AKOS015903220
    • AKOS024319590
    • AKOS025310848
    • MSK14005-100W
    • fd&c green no. 1 (c.i. 42085)
    • NCGC00164409-01
    • NCGC00255259-01
    • Ammonium, ethyl(4-(p-(ethyl(m-sulfobenzyl)amino)-alpha-phenylbenzylidene)- 2,5-cyclohexadien-1-ylidene)(m-sulfobenzyl)-, hydroxide, inner salt, sodium salt
    • 4680-78-8

  • Applications

    C.I. Acid Green 3 (CAS 4680-78-8) is an anionic acid dye used primarily to color protein fibers such as wool and silk, with common extension to nylon; it serves as a colorant in leather finishing, printing inks, and coatings to achieve green hues; it can be used to color paper and is also used for coloring certain plastics and polymer formulations, subject to formulation limits and local regulations.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 0.45
    methanol 0.74
    isopropanol 0.25
    water 0.0
    ethyl acetate 0.68
    n-propanol 0.5
    acetone 1.35
    n-butanol 0.34
    acetonitrile 0.39
    DMF 8.77
    toluene 0.28
    isobutanol 0.23
    1,4-dioxane 1.33
    methyl acetate 1.05
    THF 3.98
    2-butanone 2.13
    n-pentanol 0.24
    sec-butanol 0.32
    n-hexane 0.0
    ethylene glycol 0.15
    NMP 10.67
    cyclohexane 0.01
    DMSO 2.74
    n-butyl acetate 0.44
    n-octanol 0.14
    chloroform 4.77
    n-propyl acetate 0.52
    acetic acid 1.2
    dichloromethane 3.43
    cyclohexanone 2.46
    propylene glycol 0.39
    isopropyl acetate 0.43
    DMAc 14.78
    2-ethoxyethanol 1.39
    isopentanol 0.19
    n-heptane 0.01
    ethyl formate 0.85
    1,2-dichloroethane 1.17
    n-hexanol 0.12
    2-methoxyethanol 2.34
    isobutyl acetate 0.23
    tetrachloromethane 0.16
    n-pentyl acetate 0.62
    transcutol 2.02
    n-heptanol 0.17
    ethylbenzene 0.09
    MIBK 0.43
    2-propoxyethanol 1.53
    tert-butanol 0.17
    MTBE 0.26
    2-butoxyethanol 1.19
    propionic acid 0.84
    o-xylene 0.14
    formic acid 0.86
    diethyl ether 0.34
    m-xylene 0.12
    p-xylene 0.12
    chlorobenzene 0.5
    dimethyl carbonate 1.04
    n-octane 0.0
    formamide 1.43
    cyclopentanone 4.63
    2-pentanone 1.14
    anisole 0.53
    cyclopentyl methyl ether 0.58
    gamma-butyrolactone 4.39
    1-methoxy-2-propanol 2.04
    pyridine 2.52
    3-pentanone 1.03
    furfural 4.71
    n-dodecane 0.0
    diethylene glycol 0.78
    diisopropyl ether 0.04
    tert-amyl alcohol 0.24
    acetylacetone 1.56
    n-hexadecane 0.0
    acetophenone 0.88
    methyl propionate 1.22
    isopentyl acetate 0.35
    trichloroethylene 5.12
    n-nonanol 0.17
    cyclohexanol 0.22
    benzyl alcohol 0.64
    2-ethylhexanol 0.09
    isooctanol 0.12
    dipropyl ether 0.25
    1,2-dichlorobenzene 0.46
    ethyl lactate 0.67
    propylene carbonate 1.41
    n-methylformamide 2.62
    2-pentanol 0.15
    n-pentane 0.01
    1-propoxy-2-propanol 1.13
    1-methoxy-2-propyl acetate 1.08
    2-(2-methoxypropoxy) propanol 1.32
    mesitylene 0.05
    ε-caprolactone 2.24
    p-cymene 0.06
    epichlorohydrin 4.59
    1,1,1-trichloroethane 0.65
    2-aminoethanol 0.41
    morpholine-4-carbaldehyde 7.29
    sulfolane 5.52
    2,2,4-trimethylpentane 0.0
    2-methyltetrahydrofuran 1.03
    n-hexyl acetate 0.55
    isooctane 0.0
    2-(2-butoxyethoxy)ethanol 1.28
    sec-butyl acetate 0.29
    tert-butyl acetate 0.4
    decalin 0.0
    glycerin 0.83
    diglyme 2.69
    acrylic acid 1.12
    isopropyl myristate 0.16
    n-butyric acid 0.94
    acetyl acetate 0.51
    di(2-ethylhexyl) phthalate 0.37
    ethyl propionate 0.51
    nitromethane 2.81
    1,2-diethoxyethane 0.64
    benzonitrile 0.57
    trioctyl phosphate 0.19
    1-bromopropane 0.38
    gamma-valerolactone 9.38
    n-decanol 0.1
    triethyl phosphate 0.3
    4-methyl-2-pentanol 0.07
    propionitrile 0.51
    vinylene carbonate 1.85
    1,1,2-trichlorotrifluoroethane 6.15
    DMS 0.74
    cumene 0.05
    2-octanol 0.11
    2-hexanone 0.76
    octyl acetate 0.29
    limonene 0.08
    1,2-dimethoxyethane 2.49
    ethyl orthosilicate 0.26
    tributyl phosphate 0.22
    diacetone alcohol 0.88
    N,N-dimethylaniline 0.36
    acrylonitrile 1.01
    aniline 0.58
    1,3-propanediol 0.59
    bromobenzene 0.41
    dibromomethane 1.23
    1,1,2,2-tetrachloroethane 3.7
    2-methyl-cyclohexyl acetate 0.37
    tetrabutyl urea 0.52
    diisobutyl methanol 0.05
    2-phenylethanol 0.44
    styrene 0.14
    dioctyl adipate 0.44
    dimethyl sulfate 2.07
    ethyl butyrate 0.46
    methyl lactate 1.47
    butyl lactate 0.87
    diethyl carbonate 0.31
    propanediol butyl ether 0.91
    triethyl orthoformate 0.46
    p-tert-butyltoluene 0.05
    methyl 4-tert-butylbenzoate 0.99
    morpholine 2.18
    tert-butylamine 0.06
    n-dodecanol 0.06
    dimethoxymethane 3.15
    ethylene carbonate 1.05
    cyrene 1.95
    2-ethoxyethyl acetate 1.43
    2-ethylhexyl acetate 0.28
    1,2,4-trichlorobenzene 0.85
    4-methylpyridine 1.75
    dibutyl ether 0.15
    2,6-dimethyl-4-heptanol 0.05
    DEF 2.29
    dimethyl isosorbide 1.97
    tetrachloroethylene 1.73
    eugenol 1.28
    triacetin 0.98
    span 80 0.96
    1,4-butanediol 0.22
    1,1-dichloroethane 0.94
    2-methyl-1-pentanol 0.16
    methyl formate 1.87
    2-methyl-1-butanol 0.25
    n-decane 0.01
    butyronitrile 0.42
    3,7-dimethyl-1-octanol 0.1
    1-chlorooctane 0.06
    1-chlorotetradecane 0.02
    n-nonane 0.01
    undecane 0.01
    tert-butylcyclohexane 0.0
    cyclooctane 0.0
    cyclopentanol 0.45
    tetrahydropyran 0.76
    tert-amyl methyl ether 0.27
    2,5,8-trioxanonane 1.86
    1-hexene 0.04
    2-isopropoxyethanol 0.71
    2,2,2-trifluoroethanol 0.62
    methyl butyrate 0.8

    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