CI 15525

Also known as: D & C Red No. 5, C.I. Food Red 5, 2,7-Naphthalenedisulfonic acid, 4-[2-(2,4-dimethylphenyl)diazenyl]-3-hydroxy-, sodium salt (1:2), 2,7-Naphthalenedisulfonic acid, 4-[(2,4-dimethylphenyl)azo]-3-hydroxy-, disodium salt, C.I. Acid Red 26, disodium salt (+14 more)

CI 15525 (CAS 3761-53-3) is classified as a cosmetic ingredient. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.

View industrial chemical safety profile for CAS 3761-53-3 →

Auto-generated CPSR Part A draft with source citations
Safety Rating
MODERATE

Chemistry & Identifiers

Formula
C18H14N2Na2O7S2
MW
480.4 g/mol
PubChem CID
19579
IUPAC Name
disodium;4-[(2,4-dimethylphenyl)diazenyl]-3-hydroxynaphthalene-2,6-disulfonate
InChIKey
DKUHOIWLFSTHJN-UHFFFAOYSA-L

Regulatory Status

EU EU Status permitted
US US Status permitted

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

Safety Data

Margin of Safety, dermal absorption, and sensitization profile summaries for CI 15525.

Calculate MoS for your specific formulation with the MoS Calculator.

IARC Carcinogenicity

International Agency for Research on Cancer (WHO) monograph evaluation.

IARC Group
2B
Volume
8, Sup 7
Evaluation Year
1987

PubChem Annotations

Safety and regulatory annotations from PubChem (NCBI) aggregated sources.

Regulatory (1)
JECFA Evaluation
CI FOOD RED 5 | 1964 | NMRS 38/TRS 309-JECFA 8/23
Source: Joint FAO/WHO Expert Committee on Food Additives (JECFA)

Function Categories & List Membership

Regulatory List Membership (1)
California Proposition 65 (OEHHA)

Expert Verdict

Expert safety assessment and concern-level summary for CI 15525.

Regulatory Flags

colorant prop65

Known Synonyms

D & C Red No. 5 C.I. Food Red 5 2,7-Naphthalenedisulfonic acid, 4-[2-(2,4-dimethylphenyl)diazenyl]-3-hydroxy-, sodium salt (1:2) 2,7-Naphthalenedisulfonic acid, 4-[(2,4-dimethylphenyl)azo]-3-hydroxy-, disodium salt C.I. Acid Red 26, disodium salt D and C Red D and C Red No. 5 D&C Red No. 5 Acetacid Red J Acid Leather Red P2R Acid Leather Red KPR Acid Leather Scarlet IRW Acid Ponceau R Acid Ponceau 2RL Acid Ponceau Special Acid Red 26 Acid Scarlet Acid scarlet 2bn Acid scarlet 2r

Regulatory Lists

inert_ingredient; non_food_use; Pesticides OEHHA Proposition 65 (3/2019) OEHHA Proposition 65 (1/2023)

Australian Status

AICIS status: listed

Frequently Asked Questions

Is CI 15525 safe in cosmetics?

CI 15525 has a safety rating of "MODERATE" in our database. EU status: permitted. US status: permitted.

Is CI 15525 allowed in the EU?

CI 15525 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

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