Acid Blue 9 Ammonium Salt

INCI: ACID BLUE 9 AMMONIUM SALT

CAS Number
2650-18-2
Function
Colorant
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status restricted
US Notes Permanently listed as D&C Blue No. 4, certification required. Restricted to externally applied drugs and cosmetics only, not approved for ingestion or eye area.

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
low
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Permitted in EU. In the US, restricted as D&C Blue No. 4 to external use only with required certification, excluding ingestion and eye area applications.

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Concern Level: Moderate

Regulatory Flags

colorant

Frequently Asked Questions

Is Acid Blue 9 Ammonium Salt safe in cosmetics?

Permitted in EU. In the US, restricted as D&C Blue No. 4 to external use only with required certification, excluding ingestion and eye area applications. The EU classifies Acid Blue 9 Ammonium Salt as "permitted". Safety rating: GOOD.

Is Acid Blue 9 Ammonium Salt allowed in the EU?

Acid Blue 9 Ammonium Salt EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Acid Blue 9 Ammonium Salt do in cosmetics?

Acid Blue 9 Ammonium Salt functions as: Colorant. It is classified as a cosmetic ingredient in our database. CAS number: 2650-18-2.

What is the Margin of Safety for Acid Blue 9 Ammonium Salt?

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.

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