Phenyl Methyl Pyrazolone

INCI: PHENYL METHYL PYRAZOLONE

CAS Number
89-25-8
Function
Hair colorant (oxidative hair dye intermediate)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status restricted
EU Max Conc. 0.25%
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Exempt from FD&C color additive certification under ยง601/706 provided the label carries a caution statement and patch-test instructions

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

Hair dye use only; phenylhydrazine content below LOD is critical for safety; requires caution statement and patch-test instructions on label

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Concern Level: Low

Regulatory Flags

colorant eu_cosing_listed

Frequently Asked Questions

Is Phenyl Methyl Pyrazolone safe in cosmetics?

Hair dye use only; phenylhydrazine content below LOD is critical for safety; requires caution statement and patch-test instructions on label The EU classifies Phenyl Methyl Pyrazolone as "restricted". Safety rating: GOOD.

Is Phenyl Methyl Pyrazolone allowed in the EU?

Phenyl Methyl Pyrazolone EU regulatory status: restricted. Maximum allowed concentration: 0.25%. This is based on EU Regulation 1223/2009 and its amendments.

What does Phenyl Methyl Pyrazolone do in cosmetics?

Phenyl Methyl Pyrazolone functions as: Hair colorant (oxidative hair dye intermediate). It is classified as a cosmetic ingredient in our database. CAS number: 89-25-8.

What is the Margin of Safety for Phenyl Methyl Pyrazolone?

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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