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Indicators and stains

Basic Violet 4

Also known as Ethyl violet, C.I. Basic Violet 4, Ethyl Violet AX

CAS 2390-59-2Formula C31H42ClN3Molar mass 492.15 g/molEC 219-231-5
GHS signal word: Danger. Pictograms: Harmful or irritant, Serious health hazard, Hazardous to the environment 23 suppliers listed
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Basic Violet 4 chemical structure, C31H42ClN3, CAS 2390-59-2
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2390-59-2
Formula
C31H42ClN3
Molar mass
492.15 g/mol
Physical form
Liquid
HS code
320413
Category
Indicators and stains
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Basic Violet 4?

Plain description, key identifiers and synonyms

Ethyl violet is an organic chloride salt that is the monochloride salt of ethyl violet cation. Used for inclusion in mixed dye solutions of the iron resorcin fuchsin type for demonstrating elastic fibres. It has a role as a fluorochrome and a histological dye. It contains an ethyl violet cation.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[4-[bis[4-(diethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium chloride
CAS number
2390-59-2 CAS number cross-checked
EC numbers
219-231-5, 246-781-3
Molecular formula
C31H42ClN3
UNII
94UZ9RD7TJ
MDL number
MFCD00011765
INCI name
BASIC VIOLET 4
InChIKey
JVICFMRAVNKDOE-UHFFFAOYSA-M
InChI
InChI=1S/C31H42N3.ClH/c1-7-32(8-2)28-19-13-25(14-20-28)31(26-15-21-29(22-16-26)33(9-3)10-4)27-17-23-30(24-18-27)34(11-5)12-6;/h13-24H,7-12H2,1-6H3;1H/q+1;/p-1
SMILES (canonical and isomeric)
CCN(CC)C1=CC=C(C=C1)C(=C2C=CC(=[N+](CC)CC)C=C2)C3=CC=C(C=C3)N(CC)CC.[Cl-]

Synonyms

  • Ethyl violet
  • C.I. Basic Violet 4
  • Ethyl Violet AX
  • Ethyl Violet GGA
  • Lowacryl Violet 4
  • Ethyl crystal violet
  • C.I. 42600
  • Shikiso Acid Brilliant Blue 6B
  • Ethyl Violet (Biological Stain)
  • Ethanaminium, N-(4-(bis(4-(diethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, chloride
  • CI 42600
  • Ethanaminium, N-(4-(bis(4-(diethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)-N-ethyl-, chloride (1:1)
  • Ethanaminium, N-[4-[bis[4-(diethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-, chloride
  • (4-(bis(4-(diethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)diethylammonium
  • Ethanaminium,N-[4-[bis[4-(diethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidene]-N-ethyl-, chloride
  • [4-[bis[4-(diethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-diethylazanium, chloride
  • N-(4-(Bis(4-(diethylamino)phenyl)methylene)cyclohexa-2,5-dien-1-ylidene)-N-ethylethanaminium chloride
  • (4-(Bis(4-(diethylamino)phenyl)methylene)-2,5-cyclohexadien-1-ylidene)diethylammonium chloride
  • 4-{bis[4-(diethylamino)phenyl]methylidene}-N,N-diethylcyclohexa-2,5-dien-1-iminium chloride
  • Ethyl crystal violet, Lowacryl Violet 4, Shikiso Acid Brilliant Blue 6B
  • Ethyl Violet (Technical Grade)
  • (4-{bis[4-(diethylamino)phenyl]methylene}cyclohexa-2,5-dienylidene)diethylamin e, chloride
  • Ethyl Violet indicator
  • [4-[bis[4-(diethylamino)phenyl]methylidene]cyclohexa-2,5-dien-1-ylidene]-diethyl-azanium, chloride
  • C31H42ClN3
Show all 30 synonyms
  • Ethyl Violet [Sensitive spectrophotometric reagent for anionic surfactants]
  • Ethyl Violet, cationic triarylmethane dye
  • Ethyl violet indicator, 0.0-2.4, 10.0-13.0
  • Tris(P-(diethylamino)phenyl)methylium chloride
  • N-(4-{bis[4-(diethylamino)phenyl]methylidene}cyclohexa-2,5-dien-1-ylidene)-N-ethylethanaminium chloride

Physical and chemical properties

Measured values and descriptors computed from the structure

Physical and chemical properties

Measured values, check the supplier specification for your grade

Physical form
Liquidexp.

Values vary by grade. Ask suppliers for the COA or TDS of the batch you buy.

Computed descriptors

Calculated from the structure, useful for screening and formulation

Molecular weight
492.15 g/molcalc.
Exact mass
491.3067 Dacalc.
LogP (octanol/water)
3.8calc.
Topological polar surface area
9.49 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
2calc.
Rotatable bonds
10calc.
Heavy atoms
35calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.39calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
2calc.
Lipinski rule of five
Passes (0 violations)calc.

Calculated for screening. Confirm critical figures with the supplier.

Murcko scaffold

The ring system that remains when every side chain is removed

Murcko scaffold of this chemical, [N+]=C1C=CC(=C(c2ccccc2)c2ccccc2)C=C1

[N+]=C1C=CC(=C(c2ccccc2)c2ccccc2)C=C1

3 rings, 20 atoms.

122 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Danger
GHS07: Harmful or irritant
Harmful or irritant
GHS08: Serious health hazard
Serious health hazard
GHS09: Hazardous to the environment
Hazardous to the environment

Hazard statements

  • H302Harmful if swallowed.
  • H312Harmful in contact with skin.
  • H315Causes skin irritation.
  • H317May cause an allergic skin reaction.
  • H319Causes serious eye irritation.
  • H332Harmful if inhaled.
  • H335May cause respiratory irritation.
  • H372Causes damage to organs through prolonged or repeated exposure.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (25)
  • P260Do not breathe dust, fume, gas, mist, vapours or spray.
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P270Do not eat, drink or smoke when using this product.
  • P271Use only outdoors or in a well-ventilated area.
  • P272Contaminated work clothing should not be allowed out of the workplace.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P302 + P352If on skin: Wash with plenty of water.
  • P304 + P340If inhaled: Remove person to fresh air and keep comfortable for breathing.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P333 + P317If skin irritation or rash occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • P391Collect spillage.
  • P403 + P233Store in a well-ventilated place. Keep container tightly closed.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.

GHS classification summary, not a safety data sheet (SDS). Classifications can differ by supplier, grade and concentration. Always check the supplier's SDS.

Full safety data and first aid

Basic Violet 4 suppliers

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Where suppliers are based

23 suppliers in 5 countries

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Basic Violet 4 price

Indicative price range per kg from live supplier offers

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Uses and applications

What the substance is used for, by industry and function

Industrial uses: Dye.

Consumer uses: Dye.

Use classes: Cosmetics.

Cosmetic ingredient, INCI name BASIC VIOLET 4(hair dyeing)

Roles

  • dye
  • fluorescent dye
  • fluorochrome
  • histological dye

Functional uses

  • Dye

Cosmetic functions

  • Hair dyeing

Regulatory status

Inventories, regulations and trade controls that list this substance

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Ethanaminium, N-(4-[bis[4-(diethylamino)phenyl]methylene]-2,5-cyclohexadien-1-ylidine)-N-ethyl- and its salts, when used as a substance in hair dye produ…

United States

  • TSCA inventory (USA)
    Status: Active in US commerce

HS code and trade data

Customs classification and reported world trade statistics

Global trade

World import and export statistics for the HS code Basic Violet 4 is traded under.

HS 3204.13Indicative HS code

Basic dyes and preparations based thereon

World exports in 2024
$209M
−2.6% vs 2023, imports $224M
2019 to 2024
Top exporters
  1. India * partner reported27.9%
  2. China21.8%
  3. Spain6.6%
Top importers
  1. United States11.2%
  2. China7.9%
  3. Germany7.4%

* Partner reported figures, a lower bound.

Reported customs values in USD, not prices.Full trade data

The HS code shown for Basic Violet 4 is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Basic Violet 4, based on the data on this page

What is Basic Violet 4?

Ethyl violet is an organic chloride salt that is the monochloride salt of ethyl violet cation. Used for inclusion in mixed dye solutions of the iron resorcin fuchsin type for demonstrating elastic fibres. It has a role as a fluorochrome and a histological dye. It contains an ethyl violet cation.

What is the CAS number of Basic Violet 4?

The CAS registry number of Basic Violet 4 is 2390-59-2.

What is the molecular formula and weight of Basic Violet 4?

The molecular formula of Basic Violet 4 is C31H42ClN3 and its molar mass is 492.15 g/mol.

What is Basic Violet 4 used for?

Industrial uses: Dye. Consumer uses: Dye. Use classes: Cosmetics.

Is Basic Violet 4 hazardous?

Basic Violet 4 carries the GHS signal word "Danger". Main hazards: harmful if swallowed, harmful in contact with skin, causes skin irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Basic Violet 4?

Basic Violet 4 is usually classified under HS code 320413 (Basic dyes and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Basic Violet 4?

CompoundList lists 23 suppliers of Basic Violet 4 in India, United States, Canada, China and 1 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Basic Violet 4 in India?

16 suppliers in India list Basic Violet 4 on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Basic Violet 4?

Suppliers quote Basic Violet 4 on request because prices depend on grade, purity, quantity and destination. A free request on CompoundList gets you several quotes to compare.

Guides for buyers

Practical guides that help when you source, ship or handle Basic Violet 4

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Data last updated 7 Oct 2026. Details may have changed, please confirm them with the supplier. Report an error on this page
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