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Direct dyes

Chrysophenine

Also known as Direct yellow 12, C.I. Direct Yellow 12, Airedale Yellow CHD

CAS 2870-32-8Formula C30H26N4Na2O8S2Molar mass 680.67 g/molEC 220-698-2
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Chrysophenine chemical structure, C30H26N4Na2O8S2, CAS 2870-32-8
2D chemical structure

Key facts

What buyers check first

All properties
CAS number
2870-32-8
Formula
C30H26N4Na2O8S2
Molar mass
680.67 g/mol
EC number
220-698-2
HS code
320414
Category
Direct dyes

What is Chrysophenine?

Plain description, key identifiers and synonyms

Chrysophenine is a chemical substance with the molecular formula C30H26N4Na2O8S2 and a molar mass of 680.67 g/mol. Its CAS registry number is 2870-32-8. The IUPAC name is disodium, 5-[(4-ethoxyphenyl)diazenyl]-2-[(E)-2-[4-[(4-ethoxyphenyl)diazenyl]-2-sulfonatophenyl]ethenyl]benzenesulfonate.

Identifiers

Registry numbers, names and line notations, tap to copy

IUPAC name
disodium, 5-[(4-ethoxyphenyl)diazenyl]-2-[(E)-2-[4-[(4-ethoxyphenyl)diazenyl]-2-sulfonatophenyl]ethenyl]benzenesulfonate
CAS number
2870-32-8
EC number
220-698-2
Molecular formula
C30H26N4Na2O8S2
UNII
8Q5531T139
MDL number
MFCD00007488
INCI name
DIRECT YELLOW 12
InChIKey
YQMJDPHTMKUEHG-ZNBXPSQRSA-L
InChI
InChI=1S/C30H28N4O8S2.2Na/c1-3-41-27-15-11-23(12-16-27)31-33-25-9-7-21(29(19-25)43(35,36)37)5-6-22-8-10-26(20-30(22)44(38,39)40)34-32-24-13-17-28(18-14-24)42-4-2;;/h5-20H,3-4H2,1-2H3,(H,35,36,37)(H,38,39,40);;/q;2*+1/p-2/b6-5+,33-31?,34-32?;;
Canonical SMILES
CCOc1ccc(N=Nc2ccc(C=Cc3ccc(N=Nc4ccc(OCC)cc4)cc3S(=O)(=O)[O-])c(S(=O)(=O)[O-])c2)cc1.[Na+].[Na+]
Isomeric SMILES
CCOC1=CC=C(C=C1)N=NC2=CC(=C(C=C2)/C=C/C3=C(C=C(C=C3)N=NC4=CC=C(C=C4)OCC)S(=O)(=O)[O-])S(=O)(=O)[O-].[Na+].[Na+]

Synonyms

  • Direct yellow 12
  • C.I. Direct Yellow 12
  • Airedale Yellow CHD
  • Chrysophenine G
  • Aurophenine O
  • Chrome Leather Yellow CH
  • Chrysophenine J
  • Chrysophenine Y
  • Chrysophenine GP
  • Chrysophenine NS
  • Direct Yellow C
  • Benzo Yellow LG
  • Erie Yellow Y
  • Chrysophenine ESP
  • Cotton Yellow CH
  • Direct Yellow CV
  • Chrysophenine Extra
  • Fenamin Yellow CP
  • Diazamine Yellow C
  • Direct Yellow CHD
  • Benzanil Yellow CH
  • Fixanol Yellow 3G
  • Vondacel Yellow CG
  • Pontamine Yellow CH
  • Chrysophenine YA-CF
Show all 39 synonyms
  • Chrysophenine G Extra
  • Amanil Chrysophenine G
  • Diphenyl Chrysoine 3G
  • Mitsui Chrysophenine G
  • CI 24895
  • Tertrodirect Yellow CG
  • Diphenyl Chrysoine 3GP
  • Kayaku Chrysophenine GE
  • Kayaku Chrysophenine GN
  • Kayaku Chrysophenine GX
  • Mitsui Chrysophenine KG
  • Shikiso Chrysophenine GX
  • Atlantic Chrysophenine YA
  • Calcomine Brilliant Yellow

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
680.67 g/molcalc.
Exact mass
680.0987 Dacalc.
LogP (octanol/water)
1.3calc.
Topological polar surface area
182.3 Ųcalc.
Hydrogen bond donors
0calc.
Hydrogen bond acceptors
12calc.
Rotatable bonds
12calc.
Heavy atoms
46calc.
Rings
4calc.
Aromatic rings
4calc.
Fraction sp3 carbons
0.13calc.
Formal charge
0calc.
Stereocentres
0calc.
Components
3calc.
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, C(=Cc1ccc(N=Nc2ccccc2)cc1)c1ccc(N=Nc2ccccc2)cc1

C(=Cc1ccc(N=Nc2ccccc2)cc1)c1ccc(N=Nc2ccccc2)cc1

4 rings, 30 atoms.

44 other chemicals share this scaffold

Safety and hazards

GHS classification summary, not a safety data sheet

No GHS hazard classification is recorded for this substance yet. That does not mean it is harmless.

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

Chrysophenine suppliers

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

All 23 suppliers
23 of 23 offers

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

23 suppliers in 4 countries

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Chrysophenine 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 DIRECT YELLOW 12(hair dyeing)

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: 2,2'-(1,2-Ethenediyl)bis[5-((4-ethoxyphenyl)azo]benzenesulfonic acid) and its salts, when used as a substance in hair dye products, Ref no: 1264, Annex r…

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 Chrysophenine is traded under.

HS 3204.14Indicative HS code

Direct dyes and preparations based thereon

World exports in 2024
$328M
−1.5% vs 2023, imports $336M
2019 to 2024
Top exporters
  1. India * partner reported34.9%
  2. China11.3%
  3. Spain9.0%
Top importers
  1. Italy9.8%
  2. Germany8.7%
  3. Netherlands7.8%

* Partner reported figures, a lower bound.

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

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

Frequently asked questions

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

What is Chrysophenine?

Chrysophenine is a chemical substance with the molecular formula C30H26N4Na2O8S2 and a molar mass of 680.67 g/mol. Its CAS registry number is 2870-32-8. The IUPAC name is disodium, 5-[(4-ethoxyphenyl)diazenyl]-2-[(E)-2-[4-[(4-ethoxyphenyl)diazenyl]-2-sulfonatophenyl]ethenyl]benzenesulfonate.

What is the CAS number of Chrysophenine?

The CAS registry number of Chrysophenine is 2870-32-8.

What is the molecular formula and weight of Chrysophenine?

The molecular formula of Chrysophenine is C30H26N4Na2O8S2 and its molar mass is 680.67 g/mol.

What is Chrysophenine used for?

Use classes: Cosmetics.

Is Chrysophenine hazardous?

No GHS hazard classification for Chrysophenine is recorded on CompoundList yet. That does not prove it is safe. Always read the supplier safety data sheet.

What is the HS code of Chrysophenine?

Chrysophenine is usually classified under HS code 320414 (Direct dyes and preparations based thereon). This is indicative, confirm it with your customs broker before shipping.

Where can I buy Chrysophenine?

CompoundList lists 23 suppliers of Chrysophenine in India, China, France and United States. Send one free request to get and compare quotes. Your contact details stay private until you accept a quote.

Where can I buy Chrysophenine in India?

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

What is the price of Chrysophenine?

Suppliers quote Chrysophenine 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 Chrysophenine

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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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