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InventoryRef 8448625/10/2016

2-NAPHTHOL

2-NAPHTHOL is linked to 1 EU annex record on this page. Inventory note: II/241.

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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
Prohibited entry found
Open this evidence		1English and EU languages
Great BritainEvidence linked
Prohibited
Open this evidence		1English
CanadaEvidence linked
Prohibited
Open this evidence		1English and French
New ZealandEvidence linked
Prohibited
Open this evidence		1English
ASEANEvidence linked
Prohibited
Open this evidence		1English and national languages
ChinaEvidence linked
Prohibited
Open this evidence		1Chinese with selected English material
JapanSource mapped
Official source mapped; ingredient rule not imported
0Japanese; official English translation available
South KoreaEvidence linked
Prohibited
Open this evidence		1Korean 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
BrazilEvidence linked
Prohibited
Open this evidence		1Portuguese with INCI crosswalks
IndiaEvidence linked
Prohibited
Open this evidence		1English and Hindi
Saudi ArabiaEvidence linked
Prohibited
Open this evidence		1Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 135-19-3
CAS 135-19-3PubChem CID 8663

2-Naphthol

2-naphthol is a naphthol carrying a hydroxy group at position 2. It has a role as an antinematodal drug, a radical scavenger, a genotoxin, a mouse metabolite, a human xenobiotic metabolite and a human urinary metabolite. — ChEBI

IUPAC name
naphthalen-2-ol
Molecular formula
C10H8O
Molecular weight
144.17 g/mol
Exact mass
144.057514874 Da
XLogP3
2.7
Topological polar surface area
20.2 Ų
Hydrogen-bond donors
1
Hydrogen-bond acceptors
1
Covalent units
1
Defined stereocentres
0

Also known as

2-Naphthalenolbeta-naphtholBetanaphthol2-HydroxynaphthaleneIsonaphtholDeveloper ADeveloper BNNaphthol B
16 more reported names
2-Naphtolbeta-HydroxynaphthaleneAzogen developer Abeta-Naphtolbeta-NaptholDeveloper AMS2-Naftolo2-NaftolDeveloper sodiumC.I. Developer 5beta-Naftolobeta-Monoxynaphthalenebeta-Naftolbeta-Naphthyl alcoholbeta-Naphthyl hydroxideNAPHTHOL, BETA
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 2-NAPHTHOL

INCI name

2-NAPHTHOL

Record provenance

Inventory reference
84486
Imported identity
2-NAPHTHOL
Source update
25/10/2016
European Commission CosIng source notes
Annex II Restriction reference
Entry 241

2-Naphthol

CAS: 135-19-3
EC: 205-182-7

Key data

CAS
135-19-3
EC
205-182-7
Restriction
II/241
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.
PERFUMING
Used for perfume and aromatic raw materials.

Official EU ingredient-name evidence

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

#242 · 2-NAPHTHOL

Ingredients with overlapping formulation functions

2-METHOXYMETHYL-P-PHENYLENEDIAMINE SULFATEHAIR DYEING
2-METHYL-1-NAPHTHOLHAIR DYEING
2-METHYL-5-HYDROXYETHYLAMINOPHENOLHAIR DYEING
2-METHYLRESORCINOLHAIR DYEING
2-NITRO-5-GLYCERYL METHYLANILINEHAIR DYEING
2-NITRO-N-HYDROXYETHYL-P-ANISIDINEHAIR DYEING
2-NITRO-P-PHENYLENEDIAMINEHAIR DYEING
2-NITRO-P-PHENYLENEDIAMINE DIHYDROCHLORIDEHAIR 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 2-NAPHTHOL appears in the CosIng inventory

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

2-NAPHTHOL is also tagged with 2 cosmetic functions 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

2-NAPHTHOL 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 2-NAPHTHOL reads: "II/241". 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, 2-NAPHTHOL carries the following function designation(s):

CAS 135-19-3 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 2-NAPHTHOL

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

Use this inventory page to research 2-NAPHTHOL 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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