Acid Blue 1

INCI: CI 42045

CAS Number
129-17-9
Function
Colorant
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status prohibited
US Notes FDA Import Alert 53-06 explicitly flags CI 42045 as non-permitted

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
moderate
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

CI 42045 is prohibited in the EU and explicitly non-permitted by FDA under Import Alert 53-06 due to reports of skin irritation, serious eye damage, and respiratory sensitization. Do not confuse with CI 42090 (Acid Blue 9/FD&C Blue No. 1), which is permitted.

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Concern Level: High

Regulatory Flags

potential-allergen colorant eu_banned_cosmetics eu_cosing_listed

Frequently Asked Questions

Is Acid Blue 1 safe in cosmetics?

CI 42045 is prohibited in the EU and explicitly non-permitted by FDA under Import Alert 53-06 due to reports of skin irritation, serious eye damage, and respiratory sensitization. Do not confuse with CI 42090 (Acid Blue 9/FD&C Blue No. 1), which is permitted. The EU classifies Acid Blue 1 as "prohibited". Safety rating: POOR.

Is Acid Blue 1 allowed in the EU?

Acid Blue 1 EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does Acid Blue 1 do in cosmetics?

Acid Blue 1 functions as: Colorant. It is classified as a cosmetic ingredient in our database. CAS number: 129-17-9.

What is the Margin of Safety for Acid Blue 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.

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