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InventoryRef 3152211/09/2017

4-AMINO-2-HYDROXYTOLUENE

5-amino-o-cresol

4-AMINO-2-HYDROXYTOLUENE is linked to 1 EU annex record on this page. Inventory note: III/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
Restricted entry found
Open this evidence		1English and EU languages
Great BritainEvidence linked
Restricted
Open this evidence		1English
CanadaSource mapped
Official source mapped; ingredient rule not imported
0English and French
New ZealandEvidence linked
Restricted
Open this evidence		1English
ASEANEvidence linked
Restricted
Open this evidence		1English 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 KoreaEvidence linked
Prohibited + Restricted
Open this evidence		2Korean with some English names
United StatesSource mapped
Official source mapped; ingredient rule not imported
0English
AustraliaEvidence linked
Restricted
Open this evidence		1English
BrazilSource mapped
Official source mapped; ingredient rule not imported
0Portuguese with INCI crosswalks
IndiaEvidence linked
Restricted
Open this evidence		1English and Hindi
Saudi ArabiaEvidence linked
Restricted
Open this evidence		1Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 2835-95-2
CAS 2835-95-2PubChem CID 17818

5-Amino-2-methylphenol

3-amino-6-methylphenol is a brown powder. (NTP, 1992) — CAMEO Chemicals

IUPAC name
5-amino-2-methylphenol
Molecular formula
C7H9NO
Molecular weight
123.15 g/mol
Exact mass
123.068413911 Da
XLogP3
1.3
Topological polar surface area
46.3 Ų
Hydrogen-bond donors
2
Hydrogen-bond acceptors
2
Covalent units
1
Defined stereocentres
0

Also known as

5-Amino-o-cresol4-Amino-2-hydroxytoluene3-Hydroxy-4-methylanilinePhenol, 5-amino-2-methyl-6-Methyl-3-aminophenol2-methyl-5-aminophenol4-Amino-2-hydroxy-1-methylbenzeneUBB8XEB10B
16 more reported names
3-HYDROXY-P-TOLUIDINE1-methyl-2-hydroxy-4-aminobenzeneRefChem:913242220-618-62-Hydroxy-p-toluidine3-AMINO-6-METHYLPHENOL2635-98-5HSDB 7152UNII-UBB8XEB10B5-amino-2-methyl-phenol5-amino 2-methyl phenol5A2MPHMS3039M03Tox21_400033CAS-2835-95-2EN300-84103
Open full PubChem recordPubChem annotations3D structure image
External database identifiers

Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.

Inventory details for 4-AMINO-2-HYDROXYTOLUENE

INCI name

4-AMINO-2-HYDROXYTOLUENE

Description

5-amino-o-cresol

Record provenance

Inventory reference
31522
Imported identity
4-AMINO-2-HYDROXYTOLUENE
Source update
11/09/2017
European Commission CosIng source notes

Key data

CAS
2835-95-2
EC
220-618-6
Restriction
III/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.

Official EU ingredient-name evidence

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

#312 · 4-AMINO-2-HYDROXYTOLUENE

The markets do not agree about this substance: it is prohibited in some and permitted under conditions in others, across the 8 markets that hold a rule for it.

prohibited
South Korea
restricted
European UnionGreat BritainNew ZealandASEANAustraliaIndiaSaudi Arabia

South Korea holds more than one rule for this substance, so its position there depends on the use.

See every substance the markets disagree about

Ingredients with overlapping formulation functions

4,5-DIAMINO-1-((4-CHLOROPHENYL)METHYL)-1H-PYRAZOLE-SULFATEHAIR DYEING
4,5-DIAMINO-1-METHYLPYRAZOLE HCLHAIR DYEING
4,6-BIS(2-HYDROXYETHOXY)-M-PHENYLENEDIAMINEHAIR DYEING
4,6-BIS(2-HYDROXYETHOXY)-M-PHENYLENEDIAMINE HCLHAIR DYEING
4-AMINO-2-HYDROXYTOLUENE SULFATEHAIR DYEING
4-AMINO-2-NITRODIPHENYLAMINE-2'-CARBOXYLIC ACIDHAIR DYEING
4-AMINO-2-NITROPHENOLHAIR DYEING
4-AMINO-3-NITROPHENOLHAIR 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 4-AMINO-2-HYDROXYTOLUENE appears in the CosIng inventory

The CosIng inventory lists 4-AMINO-2-HYDROXYTOLUENE 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.

4-AMINO-2-HYDROXYTOLUENE 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

4-AMINO-2-HYDROXYTOLUENE 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 4-AMINO-2-HYDROXYTOLUENE reads: "III/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, 4-AMINO-2-HYDROXYTOLUENE carries the following function designation(s):

CAS 2835-95-2 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 4-AMINO-2-HYDROXYTOLUENE

This page combines the CosIng inventory entry for 4-AMINO-2-HYDROXYTOLUENE 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 4-AMINO-2-HYDROXYTOLUENE 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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