CI 42520

CAS Number
8004-87-3 (mixture); 603-47-4 (HCl salt)
Function
Colorant (violet triphenylmethane dye)
Safety Rating
POOR

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
EU Max Conc. 0.005%
๐Ÿ‡บ๐Ÿ‡ธ US Status prohibited
US Notes Not FDA-listed for cosmetics

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

Safety Data

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

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Restricted to 5 ppm (0.005%) in rinse-off cosmetics only due to genotoxicity and cytotoxicity concerns associated with crystal violet class dyes; not FDA-approved for cosmetic use.

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Concern Level: High

Regulatory Flags

colorant

Frequently Asked Questions

Is CI 42520 safe in cosmetics?

Restricted to 5 ppm (0.005%) in rinse-off cosmetics only due to genotoxicity and cytotoxicity concerns associated with crystal violet class dyes; not FDA-approved for cosmetic use. The EU classifies CI 42520 as "restricted". Safety rating: POOR.

Is CI 42520 allowed in the EU?

CI 42520 EU regulatory status: restricted. Maximum allowed concentration: 0.005%. This is based on EU Regulation 1223/2009 and its amendments.

What does CI 42520 do in cosmetics?

CI 42520 functions as: Colorant (violet triphenylmethane dye). It is classified as a cosmetic ingredient in our database. CAS number: 8004-87-3 (mixture); 603-47-4 (HCl salt).

What is the Margin of Safety for CI 42520?

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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