Moderate Cosmetic Ingredient

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

Also known as: N4,N4-Diethyl-2-methyl-1,4-benzenediamine monohydrochloride, 2-Amino-5-(diethylamino)toluene monoHCl, N4,N4-Diethyl-2-methylbenzene-1,4-diamine hydrochloride, 1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, hydrochloride (1:1), 1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, monohydrochloride (+15 more)

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL (CAS 2051-79-8) is a cosmetic cosmetic ingredient functioning as Hair Dyeing. EU Regulation 1223/2009 status: restricted, max II/1310. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.

View industrial chemical safety profile for CAS 2051-79-8 →

Auto-generated CPSR Part A draft with source citations

Cross-Vertical Regulatory Divergence

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL is classified GHS Danger (H301, H317, H319, H373, H410, H400) in the chemicals database but is restricted in EU cosmetics at max II/1310.

Source: Cosmetics: ingredients.eu_status/eu_max; Chemicals: ghs_classifications.signal_word/hazard_statement_code

CAS Number

2051-79-8

View industrial chemical safety profile →

Function

Hair Dyeing

Safety Rating

MODERATE

Chemistry & Identifiers

Formula

C11H19ClN2

214.73 g/mol

PubChem CID

108623

IUPAC Name

4-N,4-N-diethyl-2-methylbenzene-1,4-diamine;hydrochloride

InChIKey

MPLZNPZPPXERDA-UHFFFAOYSA-N

UNII: 39MIH70E0I Wikidata: Q27256913

Regulatory Status

EU EU Status restricted

EU Max Conc. II/1310

US US Status allowed

US Notes Allowed under the coal-tar hair dye exemption (21 USC §361(a)); products must carry the statutory caution warning and patch-test directions per Section 601 of the FD\&C Act

For full compliance data across multiple jurisdictions, use the Substance Compliance tool.

EU CLP Annex VI Harmonized Classification

Legally binding harmonized classification per Regulation (EC) No 1272/2008 (CLP) Annex VI.

Signal Word

Danger

Pictograms

Acute ToxicityEnvironmental Hazard

Hazard Class and Category

Acute Tox. 3 *; Eye Irrit. 2; Skin Sens. 1; Aquatic Acute 1; Aquatic Chronic 1

Hazard Statements

H301 Toxic if swallowed
H319 Causes serious eye irritation
H317 May cause an allergic skin reaction
H400 Very toxic to aquatic life
H410 Very toxic to aquatic life with long lasting effects

Inserted via ATP: CLP00

HRIPT Human Patch Test Studies

1 human repeat insult patch test aggregated from dermatological literature.

Test Type	N	Sensitized	Dose µg/cm²	NESIL µg/cm²	Potency
HMT	-	0	15517.24	-	-

Expanded Jurisdictional Detail

Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.

Additional Jurisdictional Restrictions (1)

Jurisdiction	Status	Max %	Product Type
KR	prohibited	-	-

Function Categories & List Membership

Cosmetic/Chemical Function Categories

Dye

Expert Verdict

Expert safety assessment and concern-level summary for N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL.

Regulatory Flags

cosing-sourced eu-restricted needs-enrichment

Known Synonyms

N4,N4-Diethyl-2-methyl-1,4-benzenediamine monohydrochloride 2-Amino-5-(diethylamino)toluene monoHCl N4,N4-Diethyl-2-methylbenzene-1,4-diamine hydrochloride 1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, hydrochloride (1:1) 1,4-Benzenediamine, N4,N4-diethyl-2-methyl-, monohydrochloride Toluene-2,5-diamine, N5,N5-diethyl-, monohydrochloride 3-Methyl-4-amino-N,N-diethylaniline hydrochloride 3-Methyl-4-amino-N,N-diethylaniline monohydrochloride 4-(Diethylamino)-2-methylaniline monohydrochloride 4-Amino-N,N-diethyl-m-toluidine hydrochloride N',N'-Diethyl-2-methyl-1,4-phenylenediamine monohydrochloride 4-diethylamino-2-methylaniline monohydrochloride N5,N5-diethyltoluene-2,5-diamine monohydrochloride 4-Amino-3-methyl-N,N-diethylaniline hydrochloride 1,4-Benzenediamine, N(sup 4),N(sup 4)-diethyl-2-methyl-, monohydrochloride EINECS 218-130-3 Toluene-2,5-diamine, N(sup 5),N(sup 5)-diethyl-, monohydrochloride 2-Amino-5-diethylaminotoluene monohydrochloride UNII-39MIH70E0I CD 2 (amine)

Chemical Function

Dye

Australian Status

AICIS status: listed

Frequently Asked Questions

Is N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL safe in cosmetics?

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL has a safety rating of "MODERATE" in our database. EU status: restricted. US status: allowed.

Is N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL allowed in the EU?

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL EU regulatory status: restricted. Maximum allowed concentration: II/1310. This is based on EU Regulation 1223/2009 and its amendments.

What does N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL do in cosmetics?

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL functions as: Hair Dyeing. It is classified as a cosmetic ingredient in our database. CAS number: 2051-79-8.

Is N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL used outside cosmetics?

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.

Does N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL have different safety status in cosmetics vs industrial chemicals?

N,N-DIETHYLTOLUENE-2,5-DIAMINE HCL is classified GHS Danger (H301, H317, H319, H373, H410, H400) in the chemicals database but is restricted in EU cosmetics at max II/1310.

Compliance Tools

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Substance Compliance

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