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 Black 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 | 0.300000011921 mg/kg bw/day | oral | rat | Subchronic | COSMOS_DB |
Sensitization Profile
Contact sensitization data for Acid Black 1 based on clinical patch test studies and IFRA standards.
Source: SCCS; IVDK
Expert Verdict
Major concern: SCCS opinion states it poses a risk to consumer health at 0.5%. The Annex IV restriction to brief-contact products only reflects this risk. Use as a hair dye colorant should be re-evaluated. This is an azo dye with potential for cleavage to aromatic amines.
Regulatory Flags
Frequently Asked Questions
Is Acid Black 1 safe in cosmetics?
Major concern: SCCS opinion states it poses a risk to consumer health at 0.5%. The Annex IV restriction to brief-contact products only reflects this risk. Use as a hair dye colorant should be re-evaluated. This is an azo dye with potential for cleavage to aromatic amines. The EU classifies Acid Black 1 as "restricted". Safety rating: POOR. 1 toxicological study endpoint(s) are available in our database.
Is Acid Black 1 allowed in the EU?
Acid Black 1 EU regulatory status: restricted. This is based on EU Regulation 1223/2009 and its amendments.
What does Acid Black 1 do in cosmetics?
Acid Black 1 functions as: Hair colorant (non-oxidative direct dye). It is classified as a cosmetic ingredient in our database. CAS number: 1064-48-8.
What is the Margin of Safety for Acid Black 1?
adequate 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 Black 1?
The NOAEL (No Observed Adverse Effect Level) for Acid Black 1 is 0.300000011921 mg/kg bw/day based on a Subchronic study via oral route in rat. Source: COSMOS_DB.
Compliance Tools
Check Acid Black 1 compliance across multiple jurisdictions:
Related Ingredients
Is Acid Black 1 in Your Products?
Scan any product label with Piro — our free ingredient scanner. Point your camera at the ingredients list and get instant safety scores for every ingredient.
Try Piro Free →Analyze Your Full Ingredient List
Paste any INCI list into the Decoder for instant safety analysis, or calculate the Margin of Safety for Acid Black 1 in your formulation.