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Fungicides

Malachite green

Also known as Basic Green 4, Malachite green chloride, Aniline Green

CAS 569-64-2Formula C23H25ClN2Molar mass 364.92 g/molEC 209-322-8
GHS signal word: Danger. Pictograms: Corrosive, Harmful or irritant, Serious health hazard, Hazardous to the environment 131 suppliers listed Drug substance
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Malachite green chemical structure, C23H25ClN2, CAS 569-64-2
2D chemical structure

Key facts

What buyers check first

All properties
Appearance
Green crystals with metallic luster
Solubility
Sol 1 /part/ in 15 /parts/ of water and 1 /part/ in 15 /parts/ of alcohol.
HS code
320413
Category
Fungicides
UN number
UN 2811
Illustrative photo, green pigment powder in a glass jar on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Malachite green?

Plain description, key identifiers and synonyms

Malachite green is an organic chloride salt that is the monochloride salt of malachite green cation. Used as a green-coloured dye, as a counter-stain in histology, and for its anti-fungal properties in aquaculture. It has a role as an antibacterial agent, a carcinogenic agent, a teratogenic agent, a fluorochrome, a histological dye, an environmental contaminant and an antifungal drug. It contains a malachite green cation.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
[4-[[4-(dimethylamino)phenyl]-phenylmethylidene]cyclohexa-2,5-dien-1-ylidene]-dimethylazanium chloride
CAS number
569-64-2 CAS number cross-checkedOther or deprecated CAS: 10309-95-2, 13425-25-7, 14426-28-9
EC numbers
209-322-8, 603-805-0, 686-173-9
Molecular formula
C23H25ClN2
UNII
12058M7ORO
MDL number
MFCD00011751
INCI name
BASIC GREEN 4
InChIKey
FDZZZRQASAIRJF-UHFFFAOYSA-M
InChI
InChI=1S/C23H25N2.ClH/c1-24(2)21-14-10-19(11-15-21)23(18-8-6-5-7-9-18)20-12-16-22(17-13-20)25(3)4;/h5-17H,1-4H3;1H/q+1;/p-1
SMILES (canonical and isomeric)
CN(C)C1=CC=C(C=C1)C(=C2C=CC(=[N+](C)C)C=C2)C3=CC=CC=C3.[Cl-]

Synonyms

  • Basic Green 4
  • Malachite green chloride
  • Aniline Green
  • China Green
  • Victoria Green B
  • Grenoble Green
  • Diamond Green B
  • Benzaldehyde Green
  • Victoria Green
  • Benzal Green
  • Burma Green B
  • Diamond Green Bx
  • Light Green N
  • Solid Green O
  • Victoria Green S
  • Fast Green O
  • Green MX
  • Calcozine Green V
  • Malachite Green A
  • Malachite Green B
  • Solid Green Crystals O
  • Victoria Green WB
  • C.I. Basic Green 4
  • Malachite Green AN
  • Malachite Green CP
Show all 39 synonyms
  • Malachite Green WS
  • Oji Malachite Green
  • Tertrophene Green M
  • Victoria Green WPB
  • CI Basic Green 4
  • Green Malaquite
  • Malachite Green J3E
  • Astra Malachite Green
  • Diamond Green B extra
  • Malachite Green Powder
  • Mitsui Malachite Green
  • Viride Malachitum
  • Diamond Green P Extra
  • Malachite green chloride salt

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

Appearance
Green crystals with metallic lusterexp.
Solubility
Sol 1 /part/ in 15 /parts/ of water and 1 /part/ in 15 /parts/ of alcohol.exp.
Vapour pressure
2.4 × 10⁻¹³ mm Hg at 25 °C /Estimated/exp.

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
364.92 g/molcalc.
Exact mass
364.1706 Dacalc.
LogP (octanol/water)
1.4calc.
Topological polar surface area
6.25 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
1calc.
Rotatable bonds
3calc.
Heavy atoms
26calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0.17calc.
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
GHS05: Corrosive
Corrosive
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.
  • H318Causes serious eye damage.
  • H361dSuspected of damaging the unborn child.
  • H400Very toxic to aquatic life.
  • H410Very toxic to aquatic life with long lasting effects.
Precautionary statements (14)
  • P203Obtain, read and follow all safety instructions before use.
  • 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.
  • P273Avoid release to the environment.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • P301 + P317If swallowed: Get medical help.
  • P305 + P354 + P338If in eyes: Immediately rinse with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P317Get medical help.
  • P318If exposed or concerned, get medical advice.
  • P330Rinse mouth.
  • P391Collect spillage.
  • P405Store locked up.
  • P501Dispose of contents and container in accordance with local regulations.
UN number
UN 2811

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

Malachite green suppliers

Sponsored listings first, then the documented ranking: membership, verification, replies, completeness, freshness and ratings

All 131 suppliers
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Where suppliers are based

131 suppliers in 18 countries

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Malachite green 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

The active ingredient is no longer contained in any registered products ... "cancelled.".

For directly dyeing silk, wool, jute and leather, dyeing cotton after mordanting. Biological stain, clinical reagent (inorganic phosphate assay). As spot test reagent for detecting sulfurous acid and cerium. As acid-base indicator ...

Therapeutic category (veterinary): Fungicide and parasiticide in fish.

Industrial uses: Dye.

Consumer uses: Dye.

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

Pharmacological actions

  • Anti-Infective Agents, Local
  • Coloring Agents
  • Fungicides, Industrial

Roles

  • aetiopathogenetic role
  • antibacterial agent
  • antifungal agent
  • antifungal drug
  • antiinfective agent
  • antimicrobial agent
  • carcinogenic agent
  • dye
  • environmental contaminant
  • fluorescent dye
  • fluorochrome
  • histological dye
  • pharmaceutical
  • teratogenic agent

Functional uses

  • Dye

Cosmetic functions

  • Hair dyeing

How it is made

Malachite green is synthesized by condensation of benzaldehyde with dimethylaniline in sulfuric acid and oxidation of the leuco compound in hydrochloric acid solution with lead dioxide or manganese dioxide. ... For production of liquid dyes, benzaldehyde is condensed with dimethylaniline in acetic acid to give a leuco base, which is then oxidized catalytically with atmospheric oxygen in the presence of (dihydrodibenzotetraaza[14]-annulene)iron and chloranil.

Condensation of benzaldehyde with n,n-dimethylaniline in the presence of an acid, followed by oxidation of the resulting product with lead peroxide and an acid, heating n,n-dimethylaniline with benzotrichloride

For dyeing it is prepared as a double salt with zinc chloride.

Regulatory status

Inventories, regulations and trade controls that list this substance

Europe

  • EU harmonised classification (CLP Annex VI)
    Index no: 602-096-00-5[1]

Health and food

  • EU cosmetic ingredient inventory
  • EU Cosmetics Regulation Annex II, prohibited in cosmetics
    Name: Malachite green hydrochloride [1], Malachite green oxalate [2], Ref no: 1188, Annex ref: II/1188
  • Active ingredient in FDA approved drug labels

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 Malachite green 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 Malachite green is indicative (it is known at chapter level only). Confirm the classification with your customs broker before shipping.

Frequently asked questions

Quick answers about Malachite green, based on the data on this page

What is Malachite green?

Malachite green is an organic chloride salt that is the monochloride salt of malachite green cation. Used as a green-coloured dye, as a counter-stain in histology, and for its anti-fungal properties in aquaculture.

What is the CAS number of Malachite green?

The CAS registry number of Malachite green is 569-64-2. Other or deprecated CAS numbers: 10309-95-2, 13425-25-7, 14426-28-9.

What is the molecular formula and weight of Malachite green?

The molecular formula of Malachite green is C23H25ClN2 and its molar mass is 364.92 g/mol.

What is Malachite green used for?

The active ingredient is no longer contained in any registered products ... "cancelled.". For directly dyeing silk, wool, jute and leather, dyeing cotton after mordanting. Biological stain, clinical reagent (inorganic phosphate assay). As spot test reagent for detecting sulfurous acid and cerium.

Is Malachite green hazardous?

Malachite green carries the GHS signal word "Danger". Main hazards: harmful if swallowed, causes serious eye damage, suspected of damaging the unborn child. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Malachite green?

Malachite green 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 Malachite green?

CompoundList lists 131 suppliers of Malachite green in India, China, United States, Germany and 14 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Malachite green in India?

33 suppliers in India list Malachite green on CompoundList. Filter the suppliers list by country and send a request to compare prices, grades and delivery times.

What is the price of Malachite green?

Suppliers quote Malachite green 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 Malachite green

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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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