C25H30ClN3
408 g/mol
Dye & PigmentDanger
Crystal violet
CAS548-62-9EC208-953-6
Category
Dye & Pigment
Compound Class
Amine
Primary Use
Biological stain and dye
Crystal violet, also known as gentian violet, is a dye compound primarily used as a biological stain. It has also been used as a pesticide, though it is not currently registered for such use in the U.
Biological stainDye for wood, silk, and paperTreatment of bacterial and fungal infections (e.g., thrush, Chagas' disease prevention in blood)
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
Restricted or banned substances
Substances on this list are banned or restricted under the named regulation. This page is a compliance reference — verify your obligations under applicable law.
Relevant lists:California Proposition 65
CAS 548-62-9
Related Compounds
StrongStructure SimilarSimilarity 0.87
Malachite green oxalate (2:3)
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Dye for textiles and biological stain
SimilarStructure SimilarSimilarity 0.77
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isotopically labeled dye reference standard
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ReferenceSame Category
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CAS55-55-0
photographic developer and hair dye ingredient
Safety Reference
Danger
H302Harmful if swallowed
H318Causes serious eye damage
H351Suspected of causing cancer
H400Very toxic to aquatic life
H410Very toxic to aquatic life with long lasting effects
H350May cause cancer
H301Toxic if swallowed
H319Causes serious eye irritation
H373May cause damage to organs through prolonged or repeated exposure
H361Suspected of damaging fertility or the unborn child
Customs Tariff Classification
The international HS code for Crystal violet (CAS 548-62-9) is 3204.13.
HS code (international, 6-digit)
3204.13
EU CN code (8-digit)
3204 13 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
[4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride
InChIKey
ZXJXZNDDNMQXFV-UHFFFAOYSA-M
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-]
Synonyms (171)
- GVS
- Chlorure de methylrosanilinum [INN-French]
- Cloruro de metilrosanilina [INN-Spanish]
- Crystal Violet BP
- Crystal Violet USP
- Gentian Violet, United States Pharmacopeia (USP)
- Gentian Violet, meets USP testing specifications
- Gentian violet (USP)
- Gentian violet USP grade (Crystal Violet USP)
- Methylrosanilinii chloridum [INN-Latin]
- Methylrosanilinium chloride (JAN/INN)
- Methylrosanilinium chloride, European Pharmacopoeia (EP)
- Methylrosanilinium for system suitability, European Pharmacopoeia (EP)
- 12416 Violet
- 723 - Dyes in sea food
- Adergon
- Aizen Crystal Violet
- Aniline Violet
- Aniline Violet Pyoktanine
- Atmonil
- Avermin
- Axuris
- Badil
- Basic Violet BN
- Basic violet 3
- Bismuth Violet
- Blaues pyoktanin
- Blaues pyoktanin [German]
- Brilliant Violet 5B
- CI Basic Violet 3
- Calcozine Violet 6BN
- Calcozine Violet C
- Caswell No. 264A
- Chloride, Methylrosaniline
- Chlorure de methylrosanilinum
- Cloruro de metilrosanilina
- Crystal Violet 10B
- Crystal Violet 5BO
- Crystal Violet 6B
- Crystal Violet 6BO
- Crystal Violet AO
- Crystal Violet AON
- Crystal Violet BPC
- Crystal Violet Base
- Crystal Violet Extra Pure
- Crystal Violet Extra Pure APN
- Crystal Violet FN
- Crystal Violet HL2
- Crystal Violet O
- Crystal Violet Pure DSC
- Crystal Violet SS
- Crystal Violet Technical
- Crystal Violet chloride
- Crystal Violet chloride salt
- Crystal Violet, 97.0-103.0%
- Crystal Violet, Dye content
- Crystal Violet, VETRANAL(TM)
- Crystal Violet, micronized
- Crystal violet
- Crystal violet indicator
- De LA Cruz Gentian Violet
- El Valle Gentian Violet
- FNA, Gentiaanviolet
- GNP Gentian Violet
- GV 11
- GV-Eleven
- Genapax
- Genapax (TN)
- Gentersal
- Gentian Violet (~90%)
- Gentian Violet Anti-Infective
- Gentian violet, 95.0-105.0%
- Gentianaviolett
- Gentianaviolett [German]
- Gentiaverm
- Genticid
- Gentioletten
- Hecto Violet R
- Hectograph Violet SR
- Hexamethyl Violet
- Hidaco crystal Violet
- Humco Gentian Violet
- Kristall-violett
- Kristall-violett [German]
- Le violet de gentiane
- Lowacryl violet 1
- Meroxyl
- Meroxyl-Wander
- Meroxylan
- Meroxylan-Wander
- Methyl Violet 10B
- Methyl Violet 10BD
- Methyl Violet 10BK
- Methyl Violet 10BN
- Methyl Violet 10BNS
- Methyl Violet 10BO
- Methyl Violet 5BNO
- Methyl Violet 5BO
- Methylrosanilinchlorid
- Methylrosaniline Cl
- Methylrosaniline chloride
- Methylrosanilini chloridum
- Methylrosanilinii chloridum
- Methylrosanilinium Cl
- Methylrosanilinum chloratum
- Methylviolett
- Methylviolett [German]
- Metilrosanilinio cloruro
- Mitsui Crystal Violet
- Oxiuran
- Oxycolor
- Oxyozyl
- Paper Blue R
- Plastoresin Violet 5BO
- Pyoktanin
- Pyoverm
- Sanar Naturals Gentian Violet
- Sentry aq mardel quick aid
- Vermicid
- Vianin
- Viocid
- Violet 5BO
- Violet 6BN
- Violet CP
- Violet XXIII
- Violet cristallise
- Violet gencianova
- Violet gencianova [Czech]
- Violet krystalova
- Violet krystalova [Czech]
- Violet zasadita 3
- Violet zasadita 3 [Czech]
- Violet, Crystal
- Violet, Gentian
- Violet, Methyl
- Violeta de genciana
- Violeta genciana
- Violetta di genziana
- gentian violet
- methylrosanilinium chloratum
- methylrosanilinium chloride