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Annex II Entry 706 CMR24/11/2016

4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride

4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride is listed in Annex II as a prohibited substance for cosmetic products placed on the EU market.

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Prohibited substance— Annex II, EU Regulation 1223/2009
Entry: 706
CMR

Chemical identity and properties

PubChem 2D chemical structure for CAS 569-61-9
CAS 569-61-9PubChem CID 11292

Pararosaniline Hydrochloride

Pararosaniline is a hydrochloride that is the monohydrochloride of 4,4'-[(4-iminocyclohexa-2,5-dien-1-ylidene)methanediyl]dianiline. One of the major constituents of Basic fuchsin, together with rosanilin, magenta II and new fuchsin. It has a role as a fluorochrome and a histological dye. It contains a pararosaniline(1+). — ChEBI

IUPAC name
4-[(4-aminophenyl)-(4-iminocyclohexa-2,5-dien-1-ylidene)methyl]aniline;hydrochloride
Molecular formula
C19H18ClN3
Molecular weight
323.8 g/mol
Exact mass
323.1189253 Da
Topological polar surface area
75.9 Ų
Hydrogen-bond donors
4
Hydrogen-bond acceptors
3
Covalent units
2
Defined stereocentres
0

Also known as

ParafuchsinParafuchsinePararosaniline chloridep-FuchsinCI Basic Red 9C.I. Basic Red 9 monohydrochlorideParafuksinFuchsine SP
16 more reported names
C.I. Basic Red 9Fuchsine SPCCalcozine magenta NBASIC PARAFUCHSINEp-Rosaniline hydrochlorideFuchsine DR-001C.I. 42500Paraosaniline hydrochlorideOrient Para Magenta BaseCerven zasadita 9NCI-C54739CI Basic Red 9, monohydrochloridePara Magenta444C2M8JKNNSC-104604,4'-((4-Imino-2,5-cyclohexadien-1-ylidene)methylene)dianiline monohydrochloride
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.

Record details

Chemical name

4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride

Chemical / IUPAC name

CI Basic Red 9

Regulatory information

Regulation

(EC) 2009/1223

See every entry this act set

SCCS opinions

CMR

CategoryCarcinogenicMutagenicReprotoxic
Cat. 1B✓——

Key data

CAS
569-61-9
EC
209-321-2
Annex
II
Entry number
706

Direct matches are limited for this record, so nearby entries from Annex II are shown as well.

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CAS: 334-88-3
EC: 206-382-7
Annex II 697
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EC: 217-406-0

What Annex II means for 4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride

4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride is listed as a prohibited substance under Annex II of EU Cosmetics Regulation 1223/2009 and must not be intentionally added. Article 17 separately addresses unintended small quantities that are technically unavoidable under good manufacturing practice and compatible with the Article 3 safety requirement.

Formulators must screen their ingredients and raw materials to ensure none contain this substance. Suppliers should provide documentation confirming absence when requested.

The page also surfaces 12 related annex records with overlapping identifiers, annex logic or naming patterns.

Compliance checklist

  • Verify this substance is absent from all raw materials and finished formulations.
  • Request absence confirmation or CoA from raw material suppliers.
  • Document the screening result in the Product Information File (PIF).
  • This substance has CMR classification. Review the CMR table above and verify current Annex II/III status before use.

Frequently asked questions

Yes. 4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride is listed in Annex II of EU Cosmetics Regulation 1223/2009 and is prohibited as an intentionally added cosmetic ingredient. Article 17 provides a narrow exception for unintended small quantities that are technically unavoidable under good manufacturing practice, provided the product remains safe under Article 3.

CAS 569-61-9 is the unique numerical identifier assigned to 4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride by the Chemical Abstracts Service. In cosmetic compliance work, the CAS number is used to cross-reference the substance across regulatory databases, raw material specifications and safety assessment reports. Multiple EU annex entries may share the same CAS number if the same substance appears under different conditions or in different annexes.

4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride has a CMR (carcinogenic, mutagenic or reprotoxic) classification under EU CLP Regulation. Under Article 15 of EU Cosmetics Regulation 1223/2009, CMR substances of category 1A or 1B are prohibited in cosmetics unless specifically permitted. Category 2 CMR substances may be used only if assessed safe by the SCCS. Always verify current annex status and any applicable derogations before use.

Use the INCI Checker tool on this site to paste your full ingredient list (INCI) and scan it against all Annex II–VI entries. The tool highlights any ingredients that match restricted, prohibited or allergen-flagged records. This is useful for rapid compliance screening of finished product formulas or raw material declarations.
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Source note for Annex II record 4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride

This page summarizes one Annex II record for 4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride from public European Commission cosmetic materials and adds linked inventory or identifier matches when available.

Use this record page to review Annex II conditions for 4,4'-(4-Iminocyclohexa-2,5-dienylidenemethylene) dianiline hydrochloride, but confirm any final regulatory decision against the current official annex wording and source files.

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