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Acid and mordant dyes

Amaranth

Also known as Acid red 27, Azorubin S, Amaranth (dye)

CAS 915-67-3Formula C20H11N2Na3O10S3Molar mass 604.48 g/molEC 213-022-2
GHS signal word: Warning. Pictograms: Harmful or irritant 46 suppliers listed
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Amaranth chemical structure, C20H11N2Na3O10S3, CAS 915-67-3
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
915-67-3
Formula
C20H11N2Na3O10S3
Molar mass
604.48 g/mol
EC number
213-022-2
HS code
320412
Category
Acid and mordant dyes

What is Amaranth?

Plain description, key identifiers and synonyms

Amaranth is an organic molecular entity.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
trisodium, 3-hydroxy-4-[(4-sulfonatonaphthalen-1-yl)diazenyl]naphthalene-2,7-disulfonate
CAS number
915-67-3 CAS number cross-checked
EC number
213-022-2
Molecular formula
C20H11N2Na3O10S3
UNII
37RBV3X49K
MDL number
MFCD00004076
INCI name
ACID RED 27, CI 16185
InChIKey
WLDHEUZGFKACJH-UHFFFAOYSA-K
InChI
InChI=1S/C20H14N2O10S3.3Na/c23-20-18(35(30,31)32)10-11-9-12(33(24,25)26)5-6-13(11)19(20)22-21-16-7-8-17(34(27,28)29)15-4-2-1-3-14(15)16;;;/h1-10,23H,(H,24,25,26)(H,27,28,29)(H,30,31,32);;;/q;3*+1/p-3
SMILES (canonical and isomeric)
C1=CC=C2C(=C1)C(=CC=C2S(=O)(=O)[O-])N=NC3=C4C=CC(=CC4=CC(=C3O)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+].[Na+]

Synonyms

  • Acid red 27
  • Azorubin S
  • Amaranth (dye)
  • Food Red 9
  • Azorubine S
  • Kayaku Amaranth
  • Java Amaranth
  • Dolkwal Amaranth
  • Bordeaux S
  • Daishiki Amaranth
  • FD & C Red No. 2
  • Acilan Red SE
  • C.I. Food Red 9
  • Amaranth Dye (80%)
  • Red No. 2
  • Food red 2
  • Azo Red R
  • C.I. 16185
  • Amaranthe
  • Amacid Amaranth
  • Edicol Amaranth
  • Rakuto Amaranth
  • Acid Amaranth
  • Aizen Amaranth
  • Amaranth Extra
Show all 39 synonyms
  • Amaranth Lake
  • Maple Amaranth
  • Toyo Amaranth
  • Hidacid Amaranth
  • Shikiso Amaranth
  • Takaoka Amaranth
  • Whortleberry Red
  • Amaranth A
  • Amaranth B
  • Amaranth R
  • Amaranth S
  • San-ei Amaranth
  • Amaranth WD
  • Calcocid amaranth

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

No measured properties are recorded for this substance yet. Ask suppliers for a technical data sheet.

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
604.48 g/molcalc.
Exact mass
603.9269 Dacalc.
LogP (octanol/water)
-6.16calc.
Topological polar surface area
216.6 ร…ยฒcalc.
Hydrogen bond donors
1calc.
Hydrogen bond acceptors
12calc.
Rotatable bonds
5calc.
Heavy atoms
38calc.
Rings
4calc.
Aromatic rings
4calc.
Fraction sp3 carbons
0calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
4calc.
Lipinski rule of five
Fails (2 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, c1ccc2c(N=Nc3cccc4ccccc34)cccc2c1

c1ccc2c(N=Nc3cccc4ccccc34)cccc2c1

4 rings, 22 atoms, the 1,2-Di-1-naphthalenyldiazene ring system.

184 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

  • H315Causes skin irritation.
  • H319Causes serious eye irritation.
  • H335May cause respiratory irritation.
Precautionary statements (16)
  • P261Avoid breathing dust, fume, gas, mist, vapours or spray.
  • P264Wash skin thoroughly after handling.
  • P264 + P265Wash skin thoroughly after handling. Do not touch eyes.
  • P271Use only outdoors or in a well-ventilated area.
  • P280Wear protective gloves, protective clothing, eye protection and face protection.
  • 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.
  • P319Get medical help if you feel unwell.
  • P321Specific treatment (see supplemental first aid instructions on the label).
  • 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.
  • 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

Amaranth suppliers

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

All 46 suppliers
30 of 30 offers
  • GFS Chemicals, Inc.
    United States, Powell ManufacturerUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • Dudley Chemical Corp.
    United StatesUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • BESTCHEM Hungรกria Kft
    Hungary ManufacturerUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
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  • K Patel International
    India, Mumbai ManufacturerUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • Chemstock
    United Arab Emirates, Dubai ManufacturerUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • Bharat Dye Chem
    India ManufacturerUnclaimed profile
    Acid Red 27Grade, purity and minimum order on request
    Price on request
    View
  • Dayglo Color Corp.
    India, MumbaiUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • Deepak Chemtex Pvt. Ltd.
    India, MumbaiUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • Sheetal Chemicals
    India ManufacturerUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View
  • HNP Dye Chem
    India ManufacturerUnclaimed profile
    AmaranthGrade, purity and minimum order on request
    Price on request
    View

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

46 suppliers in 9 countries

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Amaranth price

Indicative price range per kg from live supplier offers

No published prices right now

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Uses and applications

What the substance is used for, by industry and function

Use classes: Cosmetics.

Cosmetic ingredient, INCI name ACID RED 27(hair dyeing)

Functional uses

  • Dye

Cosmetic functions

  • Colorant
  • 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: Trisodium 3-hydroxy-4-(4'-sulphonatonaphthylazo)naphthalene-2,7-disulphonate (Acid Red 27, CI 16185) when used as a substance in hair dye products, Ref nโ€ฆ

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 Amaranth is traded under.

HS 3204.12Indicative HS code

Acid dyes, whether or not premetallised, and preparations based thereon, mordant dyesโ€ฆ

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 Amaranth is indicative (it was assigned by structure rules). Confirm the classification with your customs broker before shipping.

Frequently asked questions

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

What is Amaranth?

Amaranth is an organic molecular entity.

What is the CAS number of Amaranth?

The CAS registry number of Amaranth is 915-67-3.

What is the molecular formula and weight of Amaranth?

The molecular formula of Amaranth is C20H11N2Na3O10S3 and its molar mass is 604.48 g/mol.

What is Amaranth used for?

Use classes: Cosmetics.

Is Amaranth hazardous?

Amaranth carries the GHS signal word "Warning". Main hazards: causes skin irritation, causes serious eye irritation, may cause respiratory irritation. This summary is not an SDS, always read the supplier safety data sheet.

What is the HS code of Amaranth?

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

Where can I buy Amaranth?

CompoundList lists 46 suppliers of Amaranth in India, United States, China, Hong Kong and 5 more. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Amaranth in India?

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

What is the price of Amaranth?

Suppliers quote Amaranth 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 Amaranth

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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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