New Fuchsin

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  • Identifiers

    CAS number
    3248-91-7

    Molecular formula
    C22H24ClN3

    SMILES
    CC1=CC(=C(C2=CC(=C(C=C2)N)C)C3=CC(=C(C=C3)N)C)C=CC1=N.Cl

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Fruity 43.87%
    Floral 30.57%
    Roasted 29.06%
    Meaty 28.73%
    Grape 26.88%
    Burnt 26.3%
    Sweet 24.34%
    Neroli 23.48%
    Cooked 22.29%
    Animal 22.22%

     

    Flavor
    Bitter 69.88%
    Nitrile 21.65%
    Very strong 21.28%
    Indole 20.46%
    Oriental 19.64%
    Taco 19.46%
    Basil 19.44%
    Odorless 19.42%
    Bread crust 19.4%
    Lovage 19.11%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    5.65 (weak acid)

    Molecular weight
    365.9 g/mol

    Vapor pressure est.

    • hPa @ 20°C
    • hPa @ 25°C

    Evaporation rate
    Slow

    Boiling point est.
    878°C

    Flash point

    • 257.92 ˚C est.

  • Synonyms

    • BASIC VIOLET 2
    • New fuchsin
    • 3248-91-7
    • Magenta III
    • Neofuchsine
    • New magenta
    • Remacryl magenta B
    • Astrazon fuchsine GN
    • Trimethyl fuchsin
    • C.I. Basic Violet 2
    • Fuchsin NB
    • NSC-9858
    • CI 42520
    • C.I. 42520
    • CHEBI:87671
    • DTXSID80879817
    • A051F48W36
    • Benzenamine, 4,4'-((4-imino-3-methyl-2,5-cyclohexadien-1-ylidene)methylene)bis(2-methyl-, monohydrochloride
    • RefChem:572236
    • DTXCID701017817
    • C.I. Basic Violet 2 monohydrochloride
    • 221-831-7
    • New fuchsine
    • Calcozine New Fuchsine
    • Fuchsine SBP
    • Magenta ABN
    • MFCD00012567
    • New fuchsine G crystal
    • 4,4'-((4-Imino-3-methylcyclohexa-2,5-dien-1-ylidene)methylene)bis(2-methylaniline) hydrochloride
    • 4-[(4-amino-3-methylphenyl)-(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methyl]-2-methylaniline;hydrochloride
    • C.I. Basic Violet 2, monohydrochloride
    • new-fuchsin
    • 4,4'-[(4-imino-3-methylcyclohexa-2,5-dien-1-ylidene)methylene]bis(2-methylaniline) hydrochloride
    • Benzenamine, 4,4'-((4-imino-3-methyl-2,5-cyclohexadien-1-ylidene)methylene)bis(2-methyl-, hydrochloride (1:1)
    • Benzenamine, 4,4'-[(4-imino-3-methyl-2,5-cyclohexadien-1-ylidene)methylene]bis[2-methyl-, hydrochloride (1:1)
    • 4-[(4-amino-3-methylphenyl)(4-imino-3-methylcyclohexa-2,5-dienylidene)methyl]- 2-methylphenylamine, chloride
    • COLIPA B115
    • SCHEMBL23591
    • orb2940831
    • SCHEMBL4236470
    • CHEMBL1979779
    • Lowacryl Violet 2 (Lowenstein)
    • SCHEMBL29438034
    • MSK5897
    • NSC9858
    • HY-D1181
    • SBB057289
    • AKOS025116938
    • DB-048225
    • CS-0139835
    • NS00019808
    • F556511
    • J-926493
    • Q7016415
    • 4-[bis(4-amino-3-methylphenyl)methylidene]-2-methylcyclohexa-2,5-dien-1-iminium chloride
    • [4-[bis(4-amino-3-methyl-phenyl)methylene]-2-methyl-cyclohexa-2,5-dien-1-ylidene]ammonium;chloride
    • 4,4'-[(4-Imino-3-methylcyclohexa-2,5-dien-1-ylidene)methylene]bis(2-methylaniline)--hydrogen chloride (1/1)
    • 3248-91-7

  • Applications

    New Fuchsin (CAS 3248-91-7) is a triarylmethane dye used as a staining reagent in microbiology and histology, particularly for magenta-colored staining in standard procedures; it is also employed as a colorant in coatings, inks, and textiles; it serves as an intermediate in the production of dyes and pigments; and it may be used as an analytical dye or color indicator in certain chemical assays, subject to local regulations and formulation limits.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 40.33
    methanol 53.98
    isopropanol 24.82
    water 0.22
    ethyl acetate 94.46
    n-propanol 46.78
    acetone 110.17
    n-butanol 41.76
    acetonitrile 36.12
    DMF 340.24
    toluene 25.16
    isobutanol 23.54
    1,4-dioxane 132.72
    methyl acetate 98.82
    THF 344.48
    2-butanone 133.6
    n-pentanol 31.09
    sec-butanol 28.31
    n-hexane 1.8
    ethylene glycol 8.61
    NMP 129.95
    cyclohexane 1.9
    DMSO 148.53
    n-butyl acetate 37.94
    n-octanol 7.68
    chloroform 185.7
    n-propyl acetate 37.52
    acetic acid 59.45
    dichloromethane 134.16
    cyclohexanone 84.53
    propylene glycol 21.11
    isopropyl acetate 48.57
    DMAc 410.78
    2-ethoxyethanol 85.11
    isopentanol 27.36
    n-heptane 1.64
    ethyl formate 61.77
    1,2-dichloroethane 82.79
    n-hexanol 25.56
    2-methoxyethanol 139.99
    isobutyl acetate 23.85
    tetrachloromethane 14.61
    n-pentyl acetate 25.91
    transcutol 158.08
    n-heptanol 15.72
    ethylbenzene 10.68
    MIBK 36.48
    2-propoxyethanol 86.07
    tert-butanol 27.49
    MTBE 47.6
    2-butoxyethanol 54.07
    propionic acid 42.39
    o-xylene 12.46
    formic acid 33.87
    diethyl ether 77.46
    m-xylene 12.25
    p-xylene 12.28
    chlorobenzene 34.4
    dimethyl carbonate 90.37
    n-octane 0.69
    formamide 83.66
    cyclopentanone 175.08
    2-pentanone 83.38
    anisole 50.0
    cyclopentyl methyl ether 59.22
    gamma-butyrolactone 156.48
    1-methoxy-2-propanol 108.31
    pyridine 121.79
    3-pentanone 85.79
    furfural 136.83
    n-dodecane 0.4
    diethylene glycol 51.91
    diisopropyl ether 10.7
    tert-amyl alcohol 26.09
    acetylacetone 101.2
    n-hexadecane 0.47
    acetophenone 37.95
    methyl propionate 111.29
    isopentyl acetate 32.99
    trichloroethylene 187.1
    n-nonanol 9.51
    cyclohexanol 18.14
    benzyl alcohol 34.41
    2-ethylhexanol 13.41
    isooctanol 12.08
    dipropyl ether 31.62
    1,2-dichlorobenzene 30.27
    ethyl lactate 31.63
    propylene carbonate 65.45
    n-methylformamide 127.16
    2-pentanol 22.74
    n-pentane 2.03
    1-propoxy-2-propanol 55.67
    1-methoxy-2-propyl acetate 72.92
    2-(2-methoxypropoxy) propanol 40.24
    mesitylene 6.22
    ε-caprolactone 71.88
    p-cymene 6.25
    epichlorohydrin 219.17
    1,1,1-trichloroethane 59.06
    2-aminoethanol 28.97
    morpholine-4-carbaldehyde 157.08
    sulfolane 131.87
    2,2,4-trimethylpentane 1.17
    2-methyltetrahydrofuran 91.64
    n-hexyl acetate 21.4
    isooctane 0.8
    2-(2-butoxyethoxy)ethanol 60.59
    sec-butyl acetate 27.97
    tert-butyl acetate 46.9
    decalin 1.19
    glycerin 36.98
    diglyme 139.36
    acrylic acid 40.59
    isopropyl myristate 8.84
    n-butyric acid 67.24
    acetyl acetate 52.0
    di(2-ethylhexyl) phthalate 13.03
    ethyl propionate 43.02
    nitromethane 175.32
    1,2-diethoxyethane 58.17
    benzonitrile 25.51
    trioctyl phosphate 9.09
    1-bromopropane 39.79
    gamma-valerolactone 226.19
    n-decanol 6.85
    triethyl phosphate 21.63
    4-methyl-2-pentanol 13.46
    propionitrile 42.86
    vinylene carbonate 71.01
    1,1,2-trichlorotrifluoroethane 138.02
    DMS 36.18
    cumene 6.88
    2-octanol 7.5
    2-hexanone 39.54
    octyl acetate 12.43
    limonene 7.44
    1,2-dimethoxyethane 152.63
    ethyl orthosilicate 23.5
    tributyl phosphate 10.84
    diacetone alcohol 52.04
    N,N-dimethylaniline 27.84
    acrylonitrile 54.16
    aniline 45.77
    1,3-propanediol 43.57
    bromobenzene 29.92
    dibromomethane 69.98
    1,1,2,2-tetrachloroethane 145.5
    2-methyl-cyclohexyl acetate 24.02
    tetrabutyl urea 14.66
    diisobutyl methanol 8.18
    2-phenylethanol 32.13
    styrene 15.1
    dioctyl adipate 17.33
    dimethyl sulfate 107.56
    ethyl butyrate 35.3
    methyl lactate 60.8
    butyl lactate 27.53
    diethyl carbonate 26.52
    propanediol butyl ether 31.08
    triethyl orthoformate 35.28
    p-tert-butyltoluene 6.41
    methyl 4-tert-butylbenzoate 34.59
    morpholine 167.21
    tert-butylamine 14.45
    n-dodecanol 4.88
    dimethoxymethane 251.59
    ethylene carbonate 53.81
    cyrene 44.57
    2-ethoxyethyl acetate 57.49
    2-ethylhexyl acetate 25.65
    1,2,4-trichlorobenzene 38.22
    4-methylpyridine 80.42
    dibutyl ether 13.13
    2,6-dimethyl-4-heptanol 8.18
    DEF 115.9
    dimethyl isosorbide 70.7
    tetrachloroethylene 74.57
    eugenol 38.29
    triacetin 30.72
    span 80 30.77
    1,4-butanediol 17.24
    1,1-dichloroethane 69.32
    2-methyl-1-pentanol 23.65
    methyl formate 96.97
    2-methyl-1-butanol 28.0
    n-decane 0.78
    butyronitrile 38.83
    3,7-dimethyl-1-octanol 8.14
    1-chlorooctane 4.4
    1-chlorotetradecane 1.67
    n-nonane 0.64
    undecane 0.54
    tert-butylcyclohexane 1.23
    cyclooctane 0.78
    cyclopentanol 23.56
    tetrahydropyran 98.91
    tert-amyl methyl ether 35.47
    2,5,8-trioxanonane 79.42
    1-hexene 9.48
    2-isopropoxyethanol 51.67
    2,2,2-trifluoroethanol 29.35
    methyl butyrate 50.58

    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