Good Cosmetic Ingredient NOAEL Data

Phenethyl Isobutyrate

INCI: PHENETHYL ISOBUTYRATE

CAS Number
103-48-0
Function
Fragrance (perfuming agent)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes FEMA GRAS; not restricted by FDA

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.

Toxicological Studies

1 study endpoint found for Phenethyl Isobutyrate. 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 1000 mg/kg bw/day oral rat oral REACH

Expert Verdict

No significant safety concerns at typical fragrance use levels.

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Concern Level: Low

Regulatory Flags

fragrance-component ifra_fragrance fda_food_additive jecfa_safe

Frequently Asked Questions

Is Phenethyl Isobutyrate safe in cosmetics?

No significant safety concerns at typical fragrance use levels. The EU classifies Phenethyl Isobutyrate as "permitted". Safety rating: GOOD. 1 toxicological study endpoint(s) are available in our database.

Is Phenethyl Isobutyrate allowed in the EU?

Phenethyl Isobutyrate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.

What does Phenethyl Isobutyrate do in cosmetics?

Phenethyl Isobutyrate functions as: Fragrance (perfuming agent). It is classified as a cosmetic ingredient in our database. CAS number: 103-48-0.

What is the Margin of Safety for Phenethyl Isobutyrate?

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 Phenethyl Isobutyrate?

The NOAEL (No Observed Adverse Effect Level) for Phenethyl Isobutyrate is 1000 mg/kg bw/day based on a oral study via oral route in rat. Source: REACH.

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