What does the restriction note for ACID BLACK 52 mean?

The restriction field for ACID BLACK 52 reads: II/1323. 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 5610-64-0?

CAS 5610-64-0 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 ACID BLACK 52?

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 3160815/10/2010

ACID BLACK 52

Chromium, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulphonic acid complex (CI 15711)

ACID BLACK 52 is linked to 1 EU annex record on this page. Inventory note: II/1323.

INCI Checker Compare all markets Search similar

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.

Compare markets

Swipe or scroll horizontally to see every column.

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	Evidence linked Prohibited Open this evidence	1	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 5610-64-0

CAS 5610-64-0PubChem CID 76960928

Acid Black 52

IUPAC name: trisodium;bis(chromium(3+));tris(7-nitro-3-oxido-4-[(2-oxidonaphthalen-1-yl)diazenyl]naphthalene-1-sulfonate)

Molecular formula: C60H30Cr2N9Na3O21S3
Molecular weight: 1482.1 g/mol
Exact mass: 1480.922155 Da
Topological polar surface area: 547.0 Å²
Hydrogen-bond donors: 0
Hydrogen-bond acceptors: 27
Covalent units: 8
Defined stereocentres: 0

Also known as

C.I. Acid Black 52UNII-C2VLY70GFUC2VLY70GFUHSDB 4205EINECS 227-029-3CHROMOLAN BLACK NWAACID BLACK 52 [HSDB]EC 227-029-3

11 more reported names

CI 15711CI-15711C.I. 15711Chromate(3-), bis(3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-1-naphthalenesulfonato(3-))-, disodium hydrogenRefChem:552547ACID BLACK 52 [INCI]227-029-33-Hydroxy-4-((2-hydroxy-1-napthalenyl)azo)-7-nitro-1-naphthalenesulfonic acid, monosodium salt, chromium complex3Hydroxy4((2hydroxy1naphthalenyl)azo)7nitro1naphthalenesulfonic acid, monosodium salt, chromium complexChromate(3), bis(3hydroxy4((2hydroxy1naphthalenyl)azo)7nitro1naphthalenesulfonato(3)), disodium hydrogenPalatine Fast Black WAN

Open full PubChem record PubChem annotations 3D structure image

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 ACID BLACK 52

INCI name

ACID BLACK 52

Description

Chromium, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulphonic acid complex (CI 15711)

Record provenance

Inventory reference: 31608
Imported identity: ACID BLACK 52
Source update: 15/10/2010

European Commission CosIng source notes

Annex records for ACID BLACK 52

Annex II Restriction reference

Entry 1323

3-Hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulphonic acid and its salts, when used a…

CAS: 16279-54-2 / 5610-64-0

EC: 240-379-1 / 227-029-3

Key data

CAS

5610-64-0

227-029-3

Restriction

II/1323

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.

#843 · ACID BLACK 52

Ingredients with overlapping formulation functions

6-NITRO-2,5-PYRIDINEDIAMINEHAIR DYEING

6-NITRO-O-TOLUIDINEHAIR DYEING

7-AMINO DIHYDROBENZOTHIAZINEHAIR DYEING

ACID BLACK 131HAIR DYEING

ACID BLUE 1HAIR DYEING

ACID BLUE 3HAIR DYEING

ACID BLUE 62COLORANT, HAIR DYEING

ACID BLUE 74HAIR 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 ACID BLACK 52 appears in the CosIng inventory

The CosIng inventory lists ACID BLACK 52 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.

ACID BLACK 52 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

ACID BLACK 52 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 ACID BLACK 52 reads: "II/1323". 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, ACID BLACK 52 carries the following function designation(s):

HAIR DYEING

CAS 5610-64-0 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 to screen a full ingredient list across selected markets, or compare this substance across all supported market datasets.

Open INCI Checker

Source note for ACID BLACK 52

This page combines the CosIng inventory entry for ACID BLACK 52 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 ACID BLACK 52 and compare linked records, but verify restrictions and legal status against the current official source text and law before making regulatory decisions.

View sources View updates

Tools & next steps

Check your formula

Scan a full INCI list to detect ACID BLACK 52 and any linked EU annex restrictions or allergen flags.

INCI Checker

Search similar ingredients

Find other inventory ingredients and annex entries related to ACID BLACK 52, its identifiers or nearby name variants.