What does the restriction note for DIRECT BLACK 51 mean?

The restriction field for DIRECT BLACK 51 reads: II/1266. 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 3442-21-5?

CAS 3442-21-5 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.

InventoryRef 3356415/10/2010

DIRECT BLACK 51

Q: How do I check if my formula contains DIRECT BLACK 51?

Use the INCI Checker tool on CosIng Checker to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

Disodium 5-[[4-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-naphthyl]azo]salicylate (CI 27720)

DIRECT BLACK 51 is linked to 1 EU annex record on this page. Inventory note: II/1266.

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Inventory details for DIRECT BLACK 51

INCI name

DIRECT BLACK 51

Description

Disodium 5-[[4-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-naphthyl]azo]salicylate (CI 27720)

Annex records for DIRECT BLACK 51

Annex II Restriction reference

Entry 1266

3(or5)-[[4-[(7-amino-1-hydroxy-3-sulphonato-2-naphthyl)azo]-1-naphthyl]azo]salicylic acid and its s…

CAS: 3442-21-5 / 34977-63-4

EC: 222-351-0 / 252-305-5

Key data

CAS

3442-21-5

222-351-0

Restriction

II/1266

Function

HAIR DYEING

How DIRECT BLACK 51 appears in the CosIng inventory

The CosIng inventory lists DIRECT BLACK 51 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.

DIRECT BLACK 51 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

DIRECT BLACK 51 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 DIRECT BLACK 51 reads: "II/1266". 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, DIRECT BLACK 51 carries the following function designation(s):

HAIR DYEING

CAS 3442-21-5 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.

View CAS records

Use the INCI Checker tool to paste your full ingredient list and scan it against all EU annex records and allergen flags in one step.

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Source note for DIRECT BLACK 51

This page combines the CosIng inventory entry for DIRECT BLACK 51 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 DIRECT BLACK 51 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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Tools & next steps

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Scan a full INCI list to detect DIRECT BLACK 51 and any linked EU annex restrictions or allergen flags.

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Search similar ingredients

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