Official EU label nameGlossary entry 843
ACID BLACK 52
This record confirms an official common ingredient name for EU cosmetic product labelling. It does not by itself confirm that the substance is permitted, unrestricted or safe.
Global evidence snapshot
The resolved identity has matching regulatory evidence in 7 of 13 indexed market datasets: 7 country records and 0 EU Annex records. Every result and evidence gap is listed below.
Markets checked
13
Markets with evidence
7
Evidence gaps
6
Resolved identifiers
4
Resolved substance identity
CAS:5610-64-016279-54-2
EC:227-029-3240-379-1
Ingredient index records:
ACID BLACK 52
Cosmetic functions: HAIR DYEING
Chromium, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-naphthalenesulphonic acid complex (CI 15711)
Inventory restriction note: II/1323
7 matched or reported names
ACID BLACK 523-Hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulphonic acid and its salts, when used as a substance in hair dye products3-Hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulfonic acid (Acid Black No. 52) and its salts, when used as a substance in hair dye products3-Hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-3-羟基-4-（（2-羟基萘基）偶氮）-7- 硝基萘-1-磺酸及其盐类 — 3-Hydroxy-4-（（2-hydroxynaphthyl）azo） -7-nitronaphthalene-1-sulfonic acid and its salts （CAS No. 16279-54-2 / CAS No 5610-64-0）Ácido 3-hidroxi-4-[(2-hidroxinaftil)azo]-7-nitro naftaleno-1-sulfonico e seus sais, quando usado como substância que entra na composição de corantes capilares3-Hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulphonic acid and its salts (CAS No. 16279-54-2/5610-64-0), when used as a substance in hair dye products
Regulatory evidence in all 13 markets
Open each matched record for its scope, concentration, conditions, warnings and official source version.
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| Market | Result | Records | Dataset | Meaning / next action |
|---|---|---|---|---|
| European Union EU | No local match | 0 | Complete annex dataset Regulation (EC) 1223/2009 consolidated to 1 May 2026 | No annex match only means that these five annexes did not return a match; CosIng identity data and other EU obligations still need review. |
| Great Britain GB | Prohibited | 1Open record 1 | Complete consolidated annex dataset GB retained Regulation 1223/2009 schedules, effective 15 August 2026 | Review every linked record and exact conditions. |
| Canada CA | No local match | 0 | Complete Hotlist snapshot Health Canada Cosmetic Ingredient Hotlist, 13 August 2025 | The Hotlist is an administrative compliance tool, not an exhaustive safety approval list. |
| New Zealand NZ | Prohibited | 1Open record 1 | Complete schedules dataset Cosmetic Products Group Standard schedules effective 1 January 2026 | Review every linked record and exact conditions. |
| ASEAN ASEAN | Prohibited | 1Open record 1 | Complete regional annex dataset ASEAN Cosmetic Directive annexes 2026-1, 22 June 2026 | Review every linked record and exact conditions. |
| China CN | Prohibited | 1Open record 1 | Complete prohibited catalogues plus official-source workflow NMPA 2021 banned catalogues plus dynamic IECIC List I/List II system current since 2025 | Review every linked record and exact conditions. |
| Japan JP | No local match | 0 | Complete Standards appendices dataset MHLW Standards for Cosmetics official English source and Japanese amendments checked for the imported snapshot | The Japanese text and subsequent notices are canonical; no local match is not a product-compliance conclusion. |
| South Korea KR | No local match | 0 | Complete current appendix dataset MFDS Notice 2026-19, effective 18 March 2026 | Korean source wording is canonical and other positive lists/notices may still apply to the formulation. |
| United States US | No local match | 0 | Complete enumerated federal ingredient rules eCFR Title 21 issue date 27 August 2026 | FDA has no general approved-cosmetic-ingredient catalogue; absence from these sections is not approval or proof of safety. |
| Australia AU | No local match | 0 | Complete cosmetic-relevant Poisons Standard subset plus official workflow Therapeutic Goods (Poisons Standard—June 2026) Instrument 2026 | An AICIS Inventory match is not cosmetic approval; no Inventory match can indicate a new, exempted, reported or confidential introduction. |
| Brazil BR | Prohibited | 1Open record 1 | Complete prohibited dataset plus current restricted-list workflow ANVISA RDC 1.029/2026 and RDC 1.030/2026, published 15 June 2026 | Review every linked record and exact conditions. |
| India IN | Prohibited | 1Open record 1 | Complete current Part 2 dataset plus official workflow for Parts 1, 3 and 4 Cosmetics Rules 2020 plus current BIS IS 4707 parts (1:2020, 2:2025, 3:2025, 4:2022) | Review every linked record and exact conditions. |
| Saudi Arabia SA | Prohibited | 1Open record 1 | Complete official list index SFDA live prohibited/restricted lists, snapshot 30 August 2026 | Review every linked record and exact conditions. |
No market rows match this filter.
Matching market records and conditions
New Zealand
Cosmetic Products Group Standard schedules effective 1 January 2026ASEAN
ASEAN Cosmetic Directive annexes 2026-1, 22 June 2026China
NMPA 2021 banned catalogues plus dynamic IECIC List I/List II system current since 2025Brazil
ANVISA RDC 1.029/2026 and RDC 1.030/2026, published 15 June 2026India
Cosmetics Rules 2020 plus current BIS IS 4707 parts (1:2020, 2:2025, 3:2025, 4:2022)Saudi Arabia
SFDA live prohibited/restricted lists, snapshot 30 August 2026Chemical identity and properties
CAS 16279-54-2PubChem CID 3570294
3-Hydroxy-4-((2-hydroxynaphthyl)azo)-7-nitronaphthalene-1-sulphonic acid
- IUPAC name
- 3-hydroxy-4-[(2-hydroxynaphthalen-1-yl)diazenyl]-7-nitronaphthalene-1-sulfonic acid
- Molecular formula
- C20H13N3O7S
- Molecular weight
- 439.4 g/mol
- Exact mass
- 439.04742094 Da
- XLogP3
- 4.1
- Topological polar surface area
- 174.0 Ų
- Hydrogen-bond donors
- 3
- Hydrogen-bond acceptors
- 9
- Covalent units
- 1
- Defined stereocentres
- 0
Also known as
1-Naphthalenesulfonic acid, 3-hydroxy-4-(2-(2-hydroxy-1-naphthalenyl)diazenyl)-7-nitro-1-(2-Hydroxy-4-sulfo-6-nitro-1-naphthylazo)-2-naphthol3-hydroxy-4-[(2-hydroxynaphthyl)azo]-7-nitronaphthalene-1-sulphonic acid1-Naphthalenesulfonic acid, 3-hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-RefChem:502386240-379-1Solochrome Black AS, (free acid)C.I. Mordant Black 1, free acid
13 more reported names
C.I. Mordant Black 11-Naphthalenesulfonic acid, 3-hydroxy-4-[(2-hydroxy-1-naphthalenyl)azo]-7-nitro-1-Naphthalenesulfonic acid, 3-hydroxy-4-((2-hydroxy-1-naphthalenyl)azo)-7-nitro-EINECS 240-379-1NCIMech_00030092V9SVJ8HAEriochrome Black A, Free Acid1-(2-Hydroxy-4-sulfo-6-nitro-1-naphthylazo-2-naphtholSXYCCJAPZKHOLS-UHFFFAOYSA-NCCG-35374NCI60_0416073-hydroxy-4-(1-hydroxy-2-napthylazo)-7-nitro-1-naphthalene sulfonic acid3-Hydroxy-4-[2-(2-hydroxy-1-naphthalenyl)diazenyl]-7-nitro-1-naphthalenesulfonic acid
External database identifiers
- ChEMBL:CHEMBL2008674
- EPA DTXSID:DTXSID5066031
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
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 Ų
- 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
Retrieved from NIH PubChem on 2026-09-02 by checksum-valid CAS matching. Chemical properties do not replace the regulatory decision on this page.
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Official source and scope
Imported from Commission Implementing Decision (EU) 2025/1175 (dataset version EU 2025/1175). The glossary supplies common ingredient names for the ingredient list required by Article 19(1)(g); it is not an approval or safety list.
Open official Decision