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Acid and mordant dyes

Alizarin

Also known as 1,2-dihydroxyanthracene-9,10-dione, 1,2-Dihydroxyanthraquinone, Mordant Red 11

CAS 72-48-0Formula C14H8O4Molar mass 240.21 g/molEC 200-782-5
GHS signal word: Warning. Pictograms: Harmful or irritant 109 suppliers listed
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Alizarin chemical structure, C14H8O4, CAS 72-48-0
2D chemical structure

Key facts

What buyers check first

All properties
Physical form
Solid
Melting point
289 °C
Boiling point
430 °C
Density
1.54 @ 20 °C
HS code
320412
Category
Acid and mordant dyes
Illustrative photo, assorted laboratory chemical bottles and jars on a laboratory bench
Typical packagingIllustrative packaging image, not the actual product

What is Alizarin?

Plain description, key identifiers and synonyms

Alizarin is a dihydroxyanthraquinone that is anthracene-9,10-dione in which the two hydroxy groups are located at positions 1 and 2. It has a role as a chromophore, a dye and a plant metabolite.

Alizarin is a chemical compound and histologic stain.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
1,2-dihydroxyanthracene-9,10-dione
CAS number
72-48-0 CAS number cross-checkedOther or deprecated CAS: 1322-60-7, 140861-55-8
EC number
200-782-5
Molecular formula
C14H8O4
UNII
60MEW57T9G
MDL number
MFCD00001201
INCI name
CI 58000
InChIKey
RGCKGOZRHPZPFP-UHFFFAOYSA-N
InChI
InChI=1S/C14H8O4/c15-10-6-5-9-11(14(10)18)13(17)8-4-2-1-3-7(8)12(9)16/h1-6,15,18H
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=O)C3=C(C2=O)C(=C(C=C3)O)O

Synonyms

  • 1,2-dihydroxyanthracene-9,10-dione
  • 1,2-Dihydroxyanthraquinone
  • Mordant Red 11
  • 1,2-Dihydroxy-9,10-anthracenedione
  • Turkey Red
  • Alizarine
  • Alizarin B
  • Alizarine Red
  • 1,2-Anthraquinonediol
  • Alizarine B
  • Alizarina
  • Eljon Madder
  • Alizarine NAC
  • Alizarine Red B
  • Alizarine Red L
  • Alizerine NAC
  • Eljon Madder M
  • 1,2-Dihydroxy-9,10-anthraquinone
  • Alizarine 3B
  • Alizarine L paste
  • Alizarine Red IP
  • Turkey Red W
  • Alizarine indicator
  • Alizarine Red B2
  • Certiqual Alizarine
Show all 39 synonyms
  • Alizarine Red IPP
  • Alizerine Red IPP
  • Mitsui Alizarine B
  • Sanyo Carmine L2B
  • Mitsui Alizarine BS
  • Certiqual Alizarine D
  • Alizarine Lake Red 2P
  • Alizarine Lake Red 3P
  • Alizarine Lake Red IPX
  • C.I. Mordant Red 11
  • C.I. Mordant Red 11C
  • D And C Orange Number 15
  • C.I. 58000
  • D and C Orange Number 15D

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
Solidexp.
Melting point
289 °Cexp.
Boiling point
430 °Cexp.
Density
1.54 @ 20 °Cexp.

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
240.21 g/molcalc.
Exact mass
240.0423 Dacalc.
LogP (octanol/water)
1.87calc.
Topological polar surface area
74.6 Ųcalc.
Hydrogen bond donors
2calc.
Hydrogen bond acceptors
4calc.
Rotatable bonds
0calc.
Heavy atoms
18calc.
Rings
3calc.
Aromatic rings
2calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
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, O=C1c2ccccc2C(=O)c2ccccc21

O=C1c2ccccc2C(=O)c2ccccc21

3 rings, 16 atoms, the Anthraquinone ring system.

2,059 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

GHS signal word
Warning
GHS07: Harmful or irritant
Harmful or irritant

Hazard statements

  • H302Harmful if swallowed.
  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
Precautionary statements (13)
  • 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.
  • 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.
  • P305 + P351 + P338If in eyes: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • P330Rinse mouth.
  • P332 + P317If skin irritation occurs: Get medical help.
  • P337 + P317If eye irritation persists: Get medical help.
  • P362 + P364Take off contaminated clothing. And wash it before reuse.
  • 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

Alizarin suppliers

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

All 109 suppliers
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Suppliers marked Unclaimed profile have not claimed their profile yet. They are not verified by CompoundList, their offers are price on request and details may have changed, so please confirm them with the supplier. Company representatives can claim a profile with a business email on the company's own website domain. Our team verifies each claim and sends the result by email.

Where suppliers are based

109 suppliers in 21 countries

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Alizarin price

Indicative price range per kg from live supplier offers

No published prices right now

Suppliers quote this chemical on request. Send one free request and compare quotes side by side.

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name CI 58000(colorant)

Roles

  • chromophore
  • dye
  • eukaryotic metabolite
  • metabolite
  • photochemical role
  • plant metabolite

Functional uses

  • Dye

Cosmetic functions

  • Colorant

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: 1,2-Dihydroxyanthraquinone (Pigment Red 83, CI 58000) when used as a substance in hair dye products, Ref no: 1361, Annex ref: II/1361
  • EU Cosmetics Regulation Annex IV, allowed colourant
    Name: CI 58000 / PIGMENT RED 83, Ref no: 86, Annex ref: IV/86

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 Alizarin is traded under.

HS 3204.12Indicative HS code

Acid dyes, whether or not premetallised, and preparations based thereon, mordant dyes…

World exports in 2024
$792M
+6.2% vs 2023, imports $791M
2019 to 2024
Top exporters
  1. India * partner reported34.9%
  2. China9.3%
  3. Germany7.4%
Top importers
  1. China15.3%
  2. Italy8.2%
  3. United States7.3%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

Quick answers about Alizarin, based on the data on this page

What is Alizarin?

Alizarin is a dihydroxyanthraquinone that is anthracene-9,10-dione in which the two hydroxy groups are located at positions 1 and 2. It has a role as a chromophore, a dye and a plant metabolite.

What is the CAS number of Alizarin?

The CAS registry number of Alizarin is 72-48-0. Other or deprecated CAS numbers: 1322-60-7, 140861-55-8.

What is the molecular formula and weight of Alizarin?

The molecular formula of Alizarin is C14H8O4 and its molar mass is 240.21 g/mol.

What is Alizarin used for?

Use classes: Cosmetics.

Is Alizarin hazardous?

Alizarin carries the GHS signal word "Warning". Main hazards: harmful if swallowed, causes skin irritation, causes serious eye irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Alizarin?

Alizarin is usually classified under HS code 320412 (Acid dyes, whether or not premetallised, and preparations based thereon, mordant dyes…). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Alizarin?

CompoundList lists 109 suppliers of Alizarin in United States, China, India, United Kingdom and 17 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Alizarin in India?

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

What is the price of Alizarin?

Suppliers quote Alizarin 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 Alizarin

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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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