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InventoryRef 3163613/08/2020

ACID YELLOW 1

Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulphonate (CI 10316)

ACID YELLOW 1 is linked to 2 EU annex records on this page. Inventory note: III/214 (Acid Yellow 1).

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Regulatory evidence by market

This matrix separates verified ingredient rules from sources that are mapped but not yet imported. No imported rule does not mean the ingredient is permitted.

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MarketEvidence statusRecordsSource language
European UnionEvidence linked
Restricted entry found
Open this evidence		2English and EU languages
Great BritainEvidence linked
Restricted
Open this evidence		1English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandSource mapped
Official source mapped; ingredient rule not imported
0English
ASEANSource mapped
Official source mapped; ingredient rule not imported
0English and national languages
ChinaSource mapped
Official source mapped; ingredient rule not imported
0Chinese with selected English material
JapanSource mapped
Official source mapped; ingredient rule not imported
0Japanese; official English translation available
South KoreaSource mapped
Official source mapped; ingredient rule not imported
0Korean with some English names
United StatesSource mapped
Official source mapped; ingredient rule not imported
0English
AustraliaSource mapped
Official source mapped; ingredient rule not imported
0English
BrazilSource mapped
Official source mapped; ingredient rule not imported
0Portuguese with INCI crosswalks
IndiaSource mapped
Official source mapped; ingredient rule not imported
0English and Hindi
Saudi ArabiaSource mapped
Official source mapped; ingredient rule not imported
0Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 846-70-8
CAS 846-70-8PubChem CID 2724063

Acid Yellow 1

Naphthol yellow S is an organic sodium salt that is the disodium salt of 5,7-dinitro-8-hydroxynaphthalene-2-sulfonic acid. It has a role as a histological dye. It contains a flavianate. — ChEBI

IUPAC name
disodium;5,7-dinitro-8-oxidonaphthalene-2-sulfonate
Molecular formula
C10H4N2Na2O8S
Molecular weight
358.19 g/mol
Exact mass
357.94837483 Da
Topological polar surface area
180.0 Ų
Hydrogen-bond donors
0
Hydrogen-bond acceptors
8
Covalent units
3
Defined stereocentres
0

Also known as

Naphthol Yellow SSodium flavianateAcid Yellow SC.I. Acid Yellow 1Flavianic acid disodium saltAmacid Yellow SC.I. Food Yellow 1Kiton Yellow S
16 more reported names
Paper Yellow LZlut naftolova SNaphtol Yellow SSolar Yellow NYZlut kysela 1Calcocid Yellow SNaphthol Yellow LYellow Lake 71Naphthol Yellow OSNaphthol Yellow PLNaphtocard Yellow SHispacid Yellow NSFNaphthol Yellow SNANaphthol Yellow SXXExt D&C Yellow 7Naphthol Yellow S.FQ
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.

Inventory details for ACID YELLOW 1

INCI name

ACID YELLOW 1

Description

Disodium 5,7-dinitro-8-oxidonaphthalene-2-sulphonate (CI 10316)

Record provenance

Inventory reference
31636
Imported identity
ACID YELLOW 1
Source update
13/08/2020
European Commission CosIng source notes
Annex III Restriction reference
Entry 214

ACID YELLOW 1

CAS: 846-70-8
EC: 212-690-2
Annex IV Identified ingredient
Entry 3

CI 10316

CAS: 846-70-8
EC: 212-690-2

Key data

CAS
846-70-8
EC
212-690-2
Restriction
III/214 (Acid Yellow 1)
Function
HAIR DYEING
Imparting color to hair. Hair dyeing preparations may be temporary, semi-permanent, or permanent, depending on the length of time the colorant remains on the hair.

Official EU ingredient-name evidence

The ingredient name exactly matches the official 2025 EU glossary of common ingredient names.

#878 · ACID YELLOW 1

Records sharing a CAS or EC identity

CI 10316

Ingredients with overlapping formulation functions

ACID RED 92HAIR DYEING
ACID RED 95HAIR DYEING
ACID VIOLET 43HAIR DYEING
ACID VIOLET 9HAIR DYEING
ACID YELLOW 23HAIR DYEING
ACID YELLOW 23 ALUMINUM LAKEHAIR DYEING
ACID YELLOW 36HAIR DYEING
ACID YELLOW 73COLORANT, HAIR DYEING

Additional official and scientific sources

11 external databases to check this identity in

Each link searches that source for this identity. What each source is, and its legal weight

ECHA CHEM / Information on chemicalsPubChem PUG RESTEU Safety Gate cosmetic product alertsECHA CHEMUS EPA CompToxCosmetic Ingredient Review safety assessmentsFDA Global Substance Registration SystemILO/WHO International Chemical Safety CardsJapan NITE-CHRIPNIOSH Pocket Guide to Chemical HazardsOECD eChemPortal

How ACID YELLOW 1 appears in the CosIng inventory

The CosIng inventory lists ACID YELLOW 1 as a cosmetic ingredient and this page links it to 2 annex records. The inventory entry captures names and identifiers, while the annex records show where the substance is prohibited, restricted or positively listed in EU cosmetics law.

ACID YELLOW 1 is also tagged with 1 cosmetic function in the official data. Function labels describe intended use, but they do not replace regulatory review of linked annex records before formulation or labelling work.

Frequently asked questions

ACID YELLOW 1 appears in the EU CosIng inventory and has linked annex records. Check the annex records above for applicable restrictions, concentration limits and conditions of use. Annex II listing means prohibited; Annex III means restricted; Annexes IV, V and VI mean permitted under specified conditions.

The restriction field for ACID YELLOW 1 reads: "III/214 (Acid Yellow 1)". This is the restriction note recorded in the CosIng inventory for this ingredient. For authoritative conditions and limits, always refer to the linked annex entries above.

According to the EU CosIng inventory, ACID YELLOW 1 carries the following function designation(s):

CAS 846-70-8 may appear across multiple EU annex records. Viewing the CAS lookup page shows all Annex II–VI entries sharing this identifier, which is useful for identifying cross-annex regulatory status of the same chemical substance.
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Source note for ACID YELLOW 1

This page combines the CosIng inventory entry for ACID YELLOW 1 with 2 linked Annex II–VI records from the local dataset built from public European Commission cosmetic ingredient materials.

Use this inventory page to research ACID YELLOW 1 and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

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