Crystal Violet

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  • Identifiers

    CAS number
    548-62-9

    Molecular formula
    C25H30ClN3

    SMILES
    CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=C(C=C3)N(C)C.[Cl-]

    Safety labels

    Corrosive
    Corrosive

    Irritant
    Irritant

    Health Hazard
    Health

    Environmental Hazard
    Environmental

  • Odor profile

    Fragrance
    Fruity 46.51%
    Floral 45.69%
    Fresh 34.98%
    Citrus 28.79%
    Sweet 27.86%
    Grapefruit 27.45%
    Animal 26.86%
    Neroli 26.46%
    Herbal 24.13%
    Spicy 23.65%

     

    Flavor
    Bitter 54.73%
    Nitrile 20.19%
    Herbal 19.85%
    Oriental 19.78%
    Heather 19.6%
    Basil 19.5%
    Broom 19.48%
    Cedarleaf 19.38%
    Genet 19.35%
    Lovage 19.2%

     

    Odor impact est.
    Low

  • Properties

    pKa est.
    8.6 (weak base)

    Molecular weight
    408.0 g/mol

    Melting point expt.

    • 419 °F (Decomposes) (NTP, 1992)
    • 215 °C (decomposes)

    Flash point

    • 234.68 ˚C est.

    Solubility expt.

    • less than 1 mg/mL at 86 °F (NTP, 1992)
    • Very soluble in water, chloroform
    • In ethylene glycol methyl ether, 30 mg/mL; in ethanol, 30 mg/mL
    • Solubility (%): water 0.2-1.7; ethanol 3-14; acetone 0.4; chloroform 5.1; insoluble in xylene
    • In water, 4,000 mg/L at 25 °C

  • Synonyms

    • Crystal violet
    • gentian violet
    • 548-62-9
    • methylrosanilinium chloride
    • Aniline Violet
    • Hexamethyl Violet
    • Methyl Violet 10B
    • Gentiaverm
    • Methylrosaniline chloride
    • Pyoktanin
    • Adergon
    • Atmonil
    • Avermin
    • Axuris
    • Vianin
    • Viocid
    • Badil
    • Bismuth Violet
    • Hexamethylpararosaniline chloride
    • Basic Violet BN
    • Gentersal
    • Genticid
    • Gentioletten
    • Oxycolor
    • Vermicid
    • Genapax
    • Oxiuran
    • Oxyozyl
    • Calcozine Violet C
    • Meroxyl-Wander
    • Meroxylan-Wander
    • Brilliant Violet 5B
    • Hecto Violet R
    • Violet CP
    • Crystal Violet O
    • Calcozine Violet 6BN
    • Paper Blue R
    • Violet XXIII
    • Gentianaviolett
    • Crystal Violet AO
    • Crystal Violet BP
    • Crystal Violet chloride
    • Crystal Violet FN
    • Crystal Violet SS
    • Meroxyl
    • Meroxylan
    • Violet 5BO
    • Violet 6BN
    • Crystal Violet 6B
    • Crystal Violet AON
    • Crystal Violet BPC
    • Crystal Violet USP
    • Methyl Violet 5BO
    • Crystal Violet 5BO
    • Crystal Violet 6BO
    • Crystal Violet HL2
    • Aizen Crystal Violet
    • Hectograph Violet SR
    • Methyl Violet 5BNO
    • Crystal Violet 10B
    • Hidaco crystal Violet
    • Methyl Violet 10BD
    • Methyl Violet 10BK
    • Methyl Violet 10BN
    • Methyl Violet 10BO
    • Mitsui Crystal Violet
    • HEXAMETHYL-P-ROSANILINE CHLORIDE
    • Methyl Violet 10BNS
    • Plastoresin Violet 5BO
    • Methylviolett
    • Crystal Violet Technical
    • 12416 Violet
    • Pyoverm
    • Aniline Violet Pyoktanine
    • Crystal Violet Pure DSC
    • CI Basic Violet 3
    • Crystal Violet Extra Pure
    • Methylrosanilinii chloridum
    • Blaues pyoktanin
    • Crystal Violet chloride salt
    • Violet cristallise
    • Methylrosanilini chloridum
    • Cloruro de metilrosanilina
    • Crystal Violet Extra Pure APN
    • Hidaco Brilliant Crystal Violet
    • Methylrosanilinum chloratum
    • Methylrosanilinchlorid
    • Aizen Crystal Violet Extra Pure
    • Crystal Violet Extra Pure APNX
    • Crystal Violet Pure DSC Brilliant
    • Kristall-violett
    • Metilrosanilinio cloruro
    • Violet gencianova
    • Violet krystalova
    • Violet zasadita 3
    • Crystal Violet Base
    • Hexamethyl pararosaniline chloride
    • NCI-C55969
    • CI 42555
    • Hexamethyl p-rosaniline hydrochloride
    • NSC-3090
    • Chlorure de methylrosanilinum
    • Lowacryl violet 1
    • Methyl Violet 6B (biological stain)
    • chlorure de methylrosanilinium
    • DTXSID5020653
    • J4Z741D6O5
    • DTXCID50653
    • Pararosaniline, N,N,N',N',N'',N''-hexamethyl-, chloride
    • CHEBI:41688
    • NSC3090
    • meroxylanwander
    • hexamethylparaosaniline chloride
    • Violet, Crystal
    • Violet, Gentian
    • Violet, Methyl
    • Methylrosaniline Cl
    • Gentian Violet 1%
    • Gentian Violet 2%
    • FNA, Gentiaanviolet
    • Methylrosanilinium Cl
    • RefChem:5855
    • 4-(bis(4-(dimethylamino)phenyl)methylidene)-N,N-dimethylcyclohexa-2,5-dien-1-iminium
    • El Valle Gentian Violet
    • GNP Gentian Violet 1%
    • Chloride, Methylrosaniline
    • Humco Gentian Violet 1%
    • 548-62-9

  • Applications

    Crystal Violet (CAS 548-62-9) is widely used as a dye and staining reagent across industries: as a staining reagent in microbiology and histology (Gram staining) to differentiate bacteria and tissue structures; as a textile dye for fabrics; as a colorant in inks and coatings for paper, plastics, and films; as a pigment/colorant for polymers and plastics in manufacturing; and as an intermediate in the synthesis of other triarylmethane dyes.

    gpt-5-nano

  • Solubility @25˚C

    Solvent Solubility (g/L)
    ethanol 6.59
    methanol 4.77
    isopropanol 5.37
    water 0.03
    ethyl acetate 41.52
    n-propanol 9.27
    acetone 24.6
    n-butanol 9.02
    acetonitrile 9.54
    DMF 65.07
    toluene 24.23
    isobutanol 7.89
    1,4-dioxane 44.16
    methyl acetate 39.13
    THF 101.55
    2-butanone 44.73
    n-pentanol 11.51
    sec-butanol 9.76
    n-hexane 3.92
    ethylene glycol 1.41
    NMP 91.23
    cyclohexane 3.94
    DMSO 37.91
    n-butyl acetate 34.42
    n-octanol 2.99
    chloroform 346.38
    n-propyl acetate 31.59
    acetic acid 21.98
    dichloromethane 282.58
    cyclohexanone 56.27
    propylene glycol 3.34
    isopropyl acetate 29.17
    DMAc 140.78
    2-ethoxyethanol 33.86
    isopentanol 8.86
    n-heptane 2.82
    ethyl formate 22.04
    1,2-dichloroethane 119.43
    n-hexanol 11.13
    2-methoxyethanol 27.44
    isobutyl acetate 22.16
    tetrachloromethane 31.26
    n-pentyl acetate 16.72
    transcutol 59.07
    n-heptanol 5.12
    ethylbenzene 13.0
    MIBK 22.84
    2-propoxyethanol 37.65
    tert-butanol 7.86
    MTBE 23.47
    2-butoxyethanol 18.69
    propionic acid 16.34
    o-xylene 16.4
    formic acid 6.39
    diethyl ether 34.89
    m-xylene 14.98
    p-xylene 16.48
    chlorobenzene 45.73
    dimethyl carbonate 33.3
    n-octane 0.86
    formamide 12.22
    cyclopentanone 80.47
    2-pentanone 35.35
    anisole 30.52
    cyclopentyl methyl ether 52.53
    gamma-butyrolactone 91.1
    1-methoxy-2-propanol 25.45
    pyridine 55.79
    3-pentanone 46.18
    furfural 78.0
    n-dodecane 0.46
    diethylene glycol 16.77
    diisopropyl ether 10.82
    tert-amyl alcohol 12.52
    acetylacetone 42.05
    n-hexadecane 0.55
    acetophenone 33.82
    methyl propionate 48.83
    isopentyl acetate 31.61
    trichloroethylene 281.77
    n-nonanol 3.89
    cyclohexanol 12.55
    benzyl alcohol 21.98
    2-ethylhexanol 9.95
    isooctanol 5.33
    dipropyl ether 25.04
    1,2-dichlorobenzene 54.91
    ethyl lactate 18.23
    propylene carbonate 46.98
    n-methylformamide 20.87
    2-pentanol 8.31
    n-pentane 2.78
    1-propoxy-2-propanol 28.31
    1-methoxy-2-propyl acetate 49.02
    2-(2-methoxypropoxy) propanol 21.47
    mesitylene 8.59
    ε-caprolactone 56.01
    p-cymene 9.4
    epichlorohydrin 159.09
    1,1,1-trichloroethane 114.86
    2-aminoethanol 4.43
    morpholine-4-carbaldehyde 86.35
    sulfolane 99.11
    2,2,4-trimethylpentane 2.48
    2-methyltetrahydrofuran 61.7
    n-hexyl acetate 13.71
    isooctane 1.08
    2-(2-butoxyethoxy)ethanol 22.94
    sec-butyl acetate 25.22
    tert-butyl acetate 30.84
    decalin 3.03
    glycerin 6.28
    diglyme 61.43
    acrylic acid 16.67
    isopropyl myristate 6.43
    n-butyric acid 23.91
    acetyl acetate 30.6
    di(2-ethylhexyl) phthalate 8.67
    ethyl propionate 34.46
    nitromethane 49.4
    1,2-diethoxyethane 32.89
    benzonitrile 18.9
    trioctyl phosphate 5.02
    1-bromopropane 61.29
    gamma-valerolactone 100.74
    n-decanol 2.93
    triethyl phosphate 23.88
    4-methyl-2-pentanol 6.2
    propionitrile 14.5
    vinylene carbonate 45.03
    1,1,2-trichlorotrifluoroethane 101.61
    DMS 27.5
    cumene 10.25
    2-octanol 3.28
    2-hexanone 29.49
    octyl acetate 8.12
    limonene 12.84
    1,2-dimethoxyethane 57.4
    ethyl orthosilicate 23.65
    tributyl phosphate 8.12
    diacetone alcohol 25.79
    N,N-dimethylaniline 24.32
    acrylonitrile 17.76
    aniline 28.1
    1,3-propanediol 7.17
    bromobenzene 53.04
    dibromomethane 164.66
    1,1,2,2-tetrachloroethane 238.74
    2-methyl-cyclohexyl acetate 27.13
    tetrabutyl urea 10.59
    diisobutyl methanol 6.49
    2-phenylethanol 20.96
    styrene 15.79
    dioctyl adipate 12.83
    dimethyl sulfate 64.96
    ethyl butyrate 32.62
    methyl lactate 20.06
    butyl lactate 14.08
    diethyl carbonate 25.32
    propanediol butyl ether 8.09
    triethyl orthoformate 30.21
    p-tert-butyltoluene 8.46
    methyl 4-tert-butylbenzoate 24.8
    morpholine 58.31
    tert-butylamine 5.86
    n-dodecanol 2.33
    dimethoxymethane 58.59
    ethylene carbonate 35.12
    cyrene 34.32
    2-ethoxyethyl acetate 33.11
    2-ethylhexyl acetate 28.23
    1,2,4-trichlorobenzene 69.83
    4-methylpyridine 48.51
    dibutyl ether 8.95
    2,6-dimethyl-4-heptanol 6.49
    DEF 58.26
    dimethyl isosorbide 53.34
    tetrachloroethylene 125.01
    eugenol 22.54
    triacetin 23.74
    span 80 14.05
    1,4-butanediol 4.38
    1,1-dichloroethane 99.79
    2-methyl-1-pentanol 12.82
    methyl formate 20.59
    2-methyl-1-butanol 10.62
    n-decane 0.91
    butyronitrile 13.89
    3,7-dimethyl-1-octanol 4.91
    1-chlorooctane 4.49
    1-chlorotetradecane 1.69
    n-nonane 0.84
    undecane 0.61
    tert-butylcyclohexane 2.71
    cyclooctane 1.63
    cyclopentanol 14.8
    tetrahydropyran 46.84
    tert-amyl methyl ether 27.22
    2,5,8-trioxanonane 37.1
    1-hexene 12.41
    2-isopropoxyethanol 26.24
    2,2,2-trifluoroethanol 15.35
    methyl butyrate 37.42

    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