Is ACID RED 51 safe in cosmetics?
ACID RED 51 has a safety rating of "MODERATE" in our database. EU status: restricted.
MODERATE
Cosmetic Ingredient
ACID RED 51
ACID RED 51 (CAS 16423-68-0; 1342-25-2) is a cosmetic cosmetic ingredient functioning as Colorant, Hair Dyeing. EU Regulation 1223/2009 status: restricted, max II/1337 (when used as a substance in hair dye products). Industrial safety data is also available in the chemical safety database.
View industrial chemical safety profile for CAS 16423-68-0; 1342-25-2 →
Function
Colorant, Hair Dyeing
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.
Regulatory Status
EU EU Status
restricted
EU Max Conc.
II/1337 (when used as a substance in hair dye products)
US US Status
Not specifically regulated
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Editorial summary
Preliminary editorial summary for ACID RED 51 — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
cosing-sourced
eu-restricted
needs-enrichment
Frequently Asked Questions
Is ACID RED 51 allowed in the EU?
ACID RED 51 EU regulatory status: restricted. Maximum allowed concentration: II/1337 (when used as a substance in hair dye products). This is based on EU Regulation 1223/2009 and its amendments.
What does ACID RED 51 do in cosmetics?
ACID RED 51 functions as: Colorant, Hair Dyeing. It is classified as a cosmetic ingredient in our database. CAS number: 16423-68-0; 1342-25-2.
Compliance Tools
Check ACID RED 51 compliance across multiple jurisdictions:
Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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Chemical family
Cosmetic colorant
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