What does the restriction note for N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL mean?

The restriction field for N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL reads: II/1310. This is the restriction note from the CosIng inventory. For authoritative conditions and limits, always refer to the linked annex entries.

What other records share CAS 2051-79-8?

CAS 2051-79-8 may appear across multiple EU annex records. The CAS lookup page shows all Annex II–VI entries sharing this identifier, useful for identifying cross-annex regulatory status of the same chemical substance.

How do I check if my formula contains N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL?

Use the INCI Checker to screen a full ingredient list across selected markets, or use the substance market comparison to review this identity across all supported market datasets.

InventoryRef 3547615/10/2010

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL

N5, N5-diethyltoluene-2,5-diamine monohydrochloride

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL is linked to 1 EU annex record on this page. Inventory note: II/1310.

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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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Market	Evidence status	Records	Source language
European Union	Evidence linked Prohibited entry found Open this evidence	1	English and EU languages
Great Britain	Evidence linked Prohibited Open this evidence	1	English
Canada	Source mapped Official source mapped; ingredient rule not imported	0	English and French
New Zealand	Evidence linked Prohibited Open this evidence	1	English
ASEAN	Source mapped Official source mapped; ingredient rule not imported	0	English and national languages
China	Evidence linked Prohibited Open this evidence	1	Chinese with selected English material
Japan	Source mapped Official source mapped; ingredient rule not imported	0	Japanese; official English translation available
South Korea	Source mapped Official source mapped; ingredient rule not imported	0	Korean with some English names
United States	Source mapped Official source mapped; ingredient rule not imported	0	English
Australia	Source mapped Official source mapped; ingredient rule not imported	0	English
Brazil	Evidence linked Prohibited Open this evidence	1	Portuguese with INCI crosswalks
India	Evidence linked Prohibited Open this evidence	1	English and Hindi
Saudi Arabia	Evidence linked Prohibited Open this evidence	1	Arabic and English

Chemical identity and properties

PubChem 2D chemical structure for CAS 2051-79-8

CAS 2051-79-8PubChem CID 108623

N,N-Diethyltoluene-2,5-diamine hydrochloride

IUPAC name: 4-N,4-N-diethyl-2-methylbenzene-1,4-diamine;hydrochloride

Molecular formula: C11H19ClN2
Molecular weight: 214.73 g/mol
Exact mass: 214.1236763 Da
Topological polar surface area: 29.3 Å²
Hydrogen-bond donors: 2
Hydrogen-bond acceptors: 2
Covalent units: 2
Defined stereocentres: 0

Also known as

2-Amino-5-(diethylamino)toluene Monohydrochloride4-Diethylamino-o-toluidine HCl1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, monohydrochloride1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, hydrochloride (1:1)PPD 239MIH70E0IEINECS 246-484-94-Diethylamino-o-toluidine hydrochloride

16 more reported names

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL4-AMINO-N,N-DIETHYL-M-TOLUIDINE HYDROCHLORIDE3-METHYL-4-AMINO-N,N-DIETHYLANILINE HYDROCHLORIDE3-METHYL-4-AMINO-N,N-DIETHYLANILINE MONOHYDROCHLORIDEN5, N5-DIETHYLTOLUENE-2,5-DIAMINE MONOHYDROCHLORIDEN',N'-DIETHYL-2-METHYL-1,4-PHENYLENEDIAMINE MONOHYDROCHLORIDERefChem:822343N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL [INCI]1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, hydrochloride246-484-9N5,N5-Diethyltoluene-2,5-diamine monohydrochloride4-(N,N-Diethyl)-2-methyl-p-phenylenediamine monohydrochloride2-amino-5-(diethylamino)toluene hydrochloride4-N,N-Diethyl-2-methyl-p-phenylenediamine monohydrochlorideN4,N4-diethyl-2-methyl-1,4-Benzenediamine hydrochlorideN1,N1-Diethyl-3-methylbenzene-1,4-diamine xhydrochloride

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External database identifiers

EPA DTXSID:DTXSID1038799

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 N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL

INCI name

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL

Description

N5, N5-diethyltoluene-2,5-diamine monohydrochloride

Record provenance

Inventory reference: 35476
Imported identity: N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL

Annex II Restriction reference

Entry 1310

4-Diethylamino-o-toluidine and its salts, when used as a substance in hair dye products

CAS: 148-71-0 / 24828-38-4 / 2051-79-8

EC: 205-722-1 / 246-484-9 / 218-130-3

Key data

CAS

2051-79-8

218-130-3

Restriction

II/1310

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.

#17198 · N,N-DIETHYLTOLUENE-2,5-DIAMINE HCl

Ingredients with overlapping formulation functions

N,N-DIETHYL-M-AMINOPHENOLHAIR DYEING

N,N-DIETHYL-M-AMINOPHENOL SULFATEHAIR DYEING

N,N-DIETHYL-P-PHENYLENEDIAMINEHAIR DYEING

N,N-DIETHYL-P-PHENYLENEDIAMINE SULFATEHAIR DYEING

N,N-DIMETHYL 2,6-PYRIDINEDIAMINE HCLHAIR DYEING

N,N-DIMETHYL-P-PHENYLENEDIAMINEHAIR DYEING

N,N-DIMETHYL-P-PHENYLENEDIAMINE SULFATEHAIR DYEING

N-CYCLOPENTYL-M-AMINOPHENOLHAIR 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 chemicals PubChem PUG REST EU Safety Gate cosmetic product alerts ECHA CHEM US EPA CompTox Cosmetic Ingredient Review safety assessments FDA Global Substance Registration System ILO/WHO International Chemical Safety Cards Japan NITE-CHRIP NIOSH Pocket Guide to Chemical Hazards OECD eChemPortal

How N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL appears in the CosIng inventory

The CosIng inventory lists N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL 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.

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL 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

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL 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 N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL reads: "II/1310". 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, N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL carries the following function designation(s):

HAIR DYEING

CAS 2051-79-8 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 N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL

This page combines the CosIng inventory entry for N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL 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 N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL 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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