Agent Name

Gentian violet

CAS Number




Major Category



(4-(Bis(p-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)dimethylammonium chloride; 12416 Violet; Adergon; Aizen Crystal Violet; Aizen Crystal Violet Extra Pure; Aniline Violet; Aniline Violet Pyoktanine; Atmonil; Avermin; Axuris; Badil; Basic Violet 3; Basic Violet BN; Bismuth Violet; Blaues pyoktanin [German]; Brilliant Violet 5B; C.I. 42555; C.I. Basic violet 3; CI 42555; CI Basic Violet 3; Calcozine Violet 6BN; Calcozine Violet C; Chlorure de methylrosanilinum [INN-French]; Cloruro de metilrosanilina [INN-Spanish]; Crystal Violet; Crystal Violet 10B; Crystal Violet 5BO; Crystal Violet 6B; Crystal Violet 6BO; Crystal Violet AO; Crystal Violet AON; Crystal Violet BP; Crystal Violet BPC; Crystal Violet Chloride; Crystal Violet Extra Pure; Crystal Violet Extra Pure APN; Crystal Violet Extra Pure APNX; Crystal Violet FN; Crystal Violet HL2; Crystal Violet O; Crystal Violet Pure DSC; Crystal Violet Pure DSC Brilliant; Crystal Violet SS; Crystal Violet Technical; Crystal Violet USP; Crystal Violet chloride salt; Gentersal; Gentian Violet; Gentianaviolett [German]; Gentiaverm; Genticid; Gentioletten; Hecto Violet R; Hectograph Violet SR; Hexamethyl Violet; Hexamethyl p-rosaniline hydrochloride; Hexamethyl-p-rosaniline chloride; Hexamethylpararosaniline chloride; Hidaco Brilliant Crystal Violet; Hidaco Crystal Violet; Kristall-violett [German]; Meroxyl; Meroxyl-wander; Meroxylan; Meroxylan-wander; Methanaminium, N-(4-(bis(4-(dimethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-methyl-, chloride; Methyl Violet 10B; Methyl Violet 10BD; Methyl Violet 10BK; Methyl Violet 10BN; Methyl Violet 10BNS; Methyl Violet 10BO; Methyl Violet 5BNO; Methyl Violet 5BO; Methyl Violet 6B (biological stain); Methylrosanilinchlorid [German]; Methylrosaniline chloride; Methylrosanilini chloridum; Methylrosanilinii chloridum [INN-Latin]; Methylrosanilinum chloratum; Methylviolett [German]; Metilrosanilinio cloruro [DCIT]; Mitsui Crystal Violet; Oxiuran; Oxycolor; Oxyozyl; Paper Blue R; Pararosaniline, N,N,N',N',N'',N''-hexamethyl-, chloride; Plastoresin Violet 5BO; Pyoktanin; Pyoverm; Vermicid; Vianin; Viocid; Violet 5BO; Violet 6BN; Violet CP; Violet cristallise; Violet gencianova [Czech]; Violet krystalova [Czech]; Violet xxiii; Violet zasadita 3 [Czech]; [ChemIDplus]


Di- and Triaryl Dyes


Green powder, insoluble in water; [CAMEO]


Discontinued as a drug for vaginal use; [Drugs@FDA] Used as a pH indicator for the pH range of 0.8-2.6; [Ullmann] A dark green solid with metallic luster that has antibacterial, antifungal, and antihelminthic properties; it is applied topically to the skin and mucous membranes or administered orally in cases of pinworm, liver fluke, and strongyloides infections; [ChemIDplus]

Exposure Assessment
Vapor Pressure

1.93E-14 mm Hg

Explanatory Notes

mp = 419.0 deg F (decomposes); [CAMEO]

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Health Studies

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Toxicity Information


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