Amines & Amides Available — Bulk Only

Gentian Violet (Crystal Violet)

CAS 548-62-9 · Formula C25H30ClN3 · MW 408.0 g/mol

A deep-violet triarylmethane dye for staining, ink and pH-indicator applications. Basic Violet 3; CAS 548-62-9) is a triarylmethane basic dye. It is used as a dye for wood, silk and paper, as a colorant in inks, as a biological stain, and as a pH indicator across the range 0.8 to 2.6.

Request SDS
HS Code
3204.13
At a Glance
Material Family
Amines & Amides
Record Type
Pure compound
Primary Role
Crosslinking / Curing · pH Adjustment
Functional Roles
BASIC VIOLET 3
HAIR DYEING
Industries Served
Applications & Use Cases
  • Biological staining: laboratory biological stain
  • pH indicator: indicator across pH 0.8 to 2.6
  • Dyeing: violet dye for wood, silk and paper
  • Inks: colorant for inks
Physical Properties
Melting Point
215 °C (Decomposes)
Solubility
< 1 mg/mL at 30 °C
Safety & Handling
Full SDS available on request

A grade-specific Safety Data Sheet (SDS) — with the complete hazard classification, handling precautions, and transport information — is supplied with every shipment and available on request. Confirm all safety and regulatory details against the SDS for your specific grade.

Request SDS →
HS / Tariff Classification
Harmonized System (HS) Code — 6-digit international heading
3204 . 13
Chapter 32
Tanning or dyeing extracts; pigments; paints and varnishes
Heading 32.04
Internationally harmonized (WCO HS)
Subheading 3204.13
6-digit international code — national tariff line adds further digits
Chemical Identity
CAS Number
548-62-9
Molecular Formula
C25H30ClN3
Molecular Weight
408.0 g/mol
IUPAC Name
[4-[bis[4-(dimethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride
INCI Name
BASIC VIOLET 3
PubChem CID
InChI Key
ZXJXZNDDNMQXFV-UHFFFAOYSA-M
Synonyms & Trade Names
Crystal violet gentian violet 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
Full Description

Gentian violet (crystal violet; C.I. Basic Violet 3; CAS 548-62-9) is a triarylmethane basic dye. It is used as a dye for wood, silk and paper, as a colorant in inks, as a biological stain, and as a pH indicator across the range 0.8 to 2.6.

Frequently Asked Questions

What is gentian violet used for?

Gentian violet (crystal violet; C.I. Basic Violet 3; CAS 548-62-9) is used as a laboratory biological stain, as a pH indicator across the range 0.8 to 2.6, as a violet dye for wood, silk, and paper, and as a colorant in inks.

Is gentian violet the same as crystal violet?

Yes. Gentian violet is another name for crystal violet, a triarylmethane basic dye (C25H30ClN3). USP-grade material is supplied to that compendial specification.

Is gentian violet an indicator?

Yes. It functions as a pH indicator across the range of approximately 0.8 to 2.6, and is also widely used as a biological stain (for example in Gram staining). Performance depends on grade and application conditions.

What is the CAS number and HS code for gentian violet?

Gentian violet (crystal violet, C.I. Basic Violet 3) is CAS 548-62-9, classified under HS 3204.13. Reference these on RFQs and customs paperwork for correct identity and tariff treatment.

What bulk packaging and documentation are available?

USP-grade gentian violet is supplied as a powder; request a bulk quote for available pack sizes and order quantities. An SDS and Certificate of Analysis accompany each shipment.

Disclaimer. Information on this page — including properties, identifiers, hazard, transport (DOT/UN) and tariff (HS) classifications, and applications — is provided for general reference and is compiled from authoritative public sources (e.g. PubChem/ECHA, 49 CFR 172.101, the Harmonized Tariff Schedule). Values are typical and are not a guaranteed specification; the Certificate of Analysis (CoA) for the lot purchased governs. Products are sold for industrial and professional use only. Nothing here is a medical, health, or efficacy claim or advice. Always consult the current Safety Data Sheet (SDS) before handling, storage, transport or disposal, and confirm regulatory status, classification and suitability for your application and jurisdiction. Hazard, transport and tariff classifications must be verified for your specific shipment. RawSource makes no warranty, express or implied, and assumes no liability for use of this information. Trademarks. Third-party trademarks and brand names are the property of their respective owners; any reference is nominative — used only to identify a comparable product — and does not imply affiliation with, sponsorship by, or endorsement by the trademark owner.