Regulatory Status
For full compliance data across 55 jurisdictions, use the Substance Compliance tool.
Safety Data
Calculate MoS for your specific formulation with the MoS Calculator.
Toxicological Studies
1 study endpoint found for Acid Yellow 1. NOAEL (No Observed Adverse Effect Level) values are used to calculate the Margin of Safety per SCCS methodology.
| Endpoint | Value | Route | Species | Study Type | Source |
|---|---|---|---|---|---|
| LOAEL | 30 mg/kg bw/day | oral | rat | Subchronic | COSMOS_DB |
Expert Verdict
External use only in the US (not for lips, mucous membranes, or ingestion); nitro dye class — verify heavy metal specifications per batch COA
Regulatory Flags
Frequently Asked Questions
Is Acid Yellow 1 safe in cosmetics?
External use only in the US (not for lips, mucous membranes, or ingestion); nitro dye class — verify heavy metal specifications per batch COA The EU classifies Acid Yellow 1 as "permitted". Safety rating: MODERATE. 1 toxicological study endpoint(s) are available in our database.
Is Acid Yellow 1 allowed in the EU?
Acid Yellow 1 EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Acid Yellow 1 do in cosmetics?
Acid Yellow 1 functions as: Colorant (nitro dye; Naphthol Yellow S). It is classified as a cosmetic ingredient in our database. CAS number: 846-70-8.
What is the Margin of Safety for Acid Yellow 1?
not established The Margin of Safety (MoS) is calculated using SCCS methodology. A MoS above 100 is generally considered safe. Use the MoS Calculator tool to calculate MoS for your specific formulation and product category.
What is the NOAEL for Acid Yellow 1?
The NOAEL (No Observed Adverse Effect Level) for Acid Yellow 1 is 30 mg/kg bw/day based on a Subchronic study via oral route in rat. Source: COSMOS_DB.
Compliance Tools
Check Acid Yellow 1 compliance across multiple jurisdictions:
Related Ingredients
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