Excellent Cosmetic Ingredient NOAEL Data

Butyl Stearate

INCI: BUTYL STEARATE

CAS Number
123-95-5
Function
Emollient; skin conditioning agent
Safety Rating
EXCELLENT

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Adequate โ€” supported by CIR review with established NOAEL

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
none

Calculate MoS for your specific formulation with the MoS Calculator.

Toxicological Studies

4 study endpoints found for Butyl Stearate. 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
NOAEL 3100 mg/kg bw/day oral rat Reproductive COSMOS_DB
NOAEL 3100 mg/kg bw/day oral rat Chronic COSMOS_DB
dose_tested 3100 mg/kg bw/day oral rat Reproductive COSMOS_DB
dose_tested 3100 mg/kg bw/day oral rat Chronic COSMOS_DB

Expert Verdict

Cosmetic-grade butyl stearate is permitted for use as an emollient; industrial-grade material may cause skin/eye irritation and requires adequate purity specifications. Not compliant with COSMOS/Ecocert due to synthetic process.

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Concern Level: Low

Regulatory Flags

ifra_fragrance fda_food_additive jecfa_safe

Frequently Asked Questions

Is Butyl Stearate safe in cosmetics?

Cosmetic-grade butyl stearate is permitted for use as an emollient; industrial-grade material may cause skin/eye irritation and requires adequate purity specifications. Not compliant with COSMOS/Ecocert due to synthetic process. The EU classifies Butyl Stearate as "permitted". Safety rating: EXCELLENT. 4 toxicological study endpoint(s) are available in our database.

Is Butyl Stearate allowed in the EU?

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

What does Butyl Stearate do in cosmetics?

Butyl Stearate functions as: Emollient; skin conditioning agent. It is classified as a cosmetic ingredient in our database. CAS number: 123-95-5.

What is the Margin of Safety for Butyl Stearate?

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.

What is the NOAEL for Butyl Stearate?

The NOAEL (No Observed Adverse Effect Level) for Butyl Stearate is 3100 mg/kg bw/day based on a Reproductive study via oral route in rat. A total of 4 study endpoints are available. Source: COSMOS_DB.

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