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Annex IV Entry 31 14/08/2020

Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments

CI 15985

Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments appears in Annex IV as a positive-list colorant entry for EU cosmetics.

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Permitted colorant— Annex IV, EU Regulation 1223/2009
Entry: 31

Chemical identity and properties

PubChem 2D chemical structure for CAS 2783-94-0
CAS 2783-94-0PubChem CID 17730

FD&C yellow 6

Sunset Yellow FCF is an organic molecular entity. — ChEBI

IUPAC name
disodium;6-hydroxy-5-[(4-sulfonatophenyl)diazenyl]naphthalene-2-sulfonate
Molecular formula
C16H10N2Na2O7S2
Molecular weight
452.4 g/mol
Exact mass
451.97248157 Da
Topological polar surface area
176.0 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
9
Covalent units
3
Defined stereocentres
0

Also known as

RefChem:1085314Sunset Yellow FCFFood yellow 3Sunset yellowC.I. Food Yellow 3Orange Yellow SFD&C Yellow No. 6Gelborange-S
16 more reported names
FD&C yellow no.6C.I. Direct Yellow 11FD & C Yellow No. 6Food Yellow No.5E110Dye FDC Yellow No. 6Food Yellow No. 5C.I. 15985Sunset Yellow LakeCI 15985Sodium 6-hydroxy-5-((4-sulfonatophenyl)diazenyl)naphthalene-2-sulfonateFD and C Yellow No. 6Sunset Yellow (E110)H77VEI93A8Sunset red pigment2-Naphthalenesulfonic acid, 6-hydroxy-5-((p-sulfophenyl)azo)-, disodium salt
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-08-31 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Record details

Warnings

Purity criteria as set out in Commission Directive 95/45/EC (E 110)

Colour index or glossary

CI 15985

Chemical name

Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments

Chemical / IUPAC name

Disodium 6-hydroxy-5-((4-sulphonatophenyl)azo)naphthalene-2-sulphonate

Color

Yellow

Regulatory information

Regulation

(EC) 2009/1223

See every entry this act set

Identified ingredients

  • CI 15985
  • Sunset Yellow
  • Sunset Yellow Aluminum Lake

Key data

CAS
2783-94-0
EC
220-491-7
Annex
IV
Entry number
31

Inventory links for Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments

Inventory Restriction reference
Ref 32724

CI 15985

CAS: 2783-94-0
EC: 220-491-7

Direct matches are limited for this record, so nearby entries from Annex IV are shown as well.

Annex IV 30
Nearby record in the same annex

CI 15980

CAS: 2347-72-0
EC: 219-073-7
Annex IV 32
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CI 16035

CAS: 25956-17-6
EC: 247-368-0
Annex IV 29
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CI 15880

CAS: 6417-83-0
EC: 229-142-3
Annex IV 33
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CI 16185

CAS: 642-59-1; 915-67-3
EC: 211-385-1; 213-022-2
Annex IV 28
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CI 15865

CAS: 3564-21-4; 5280-66-0
EC: 222-642-2
Annex IV 34
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CI 16230

CAS: 1936-15-8
EC: 217-705-6
Annex IV 27
Nearby record in the same annex

CI 15850

EC: 226-109-5
Annex IV 35
Nearby record in the same annex

CI 16255

CAS: 2611-82-7
EC: 220-036-2
Annex IV 26
Nearby record in the same annex

CI 15800

CAS: 6371-76-2
EC: 228-899-7
Annex IV 36
Nearby record in the same annex

CI 16290

CAS: 5850-44-2
EC: 227-454-4
Annex IV 25
Nearby record in the same annex

CI 15630

CAS: 1248-18-6
EC: 214-998-2
Annex IV 37
Nearby record in the same annex

CI 17200

CAS: 3567-66-6
EC: 222-656-9

What Annex IV means for Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments

Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments is an approved colorant listed in Annex IV of EU Cosmetics Regulation 1223/2009. Only colorants on this positive list may be used to colour cosmetic products on the EU market.

Some colorants in Annex IV are restricted by product type — for example, prohibited from use around the eyes or in products applied to mucous membranes. Check the product type and conditions fields above before use.

This record is linked to 1 CosIng inventory ingredient for name and identifier cross-reference. The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Confirm colorant is used only in permitted product types listed above.
  • Record the Colour Index number and CAS identifier in the ingredient declaration.

Frequently asked questions

Yes. Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments is included in Annex IV of EU Cosmetics Regulation 1223/2009 as a permitted colorant. Only colorants on this positive list may be used to colour cosmetic products in the EU. Check the product type conditions above for any use restrictions.

CAS 2783-94-0 is the unique numerical identifier assigned to Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex IV record Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments

This page summarizes one Annex IV record for Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex IV conditions for Disodium 6-hydroxy-5-[(4-sulphonatophenyl)azo]naphthalene-2-sulphonate and its insoluble barium, strontium and zirconium lakes, salts and pigments, but confirm any final regulatory decision against the current official annex wording and source files.

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