Butyl Hydroxybutyrate

INCI: BUTYL HYDROXYBUTYRATE

CAS Number
53605-94-0
Function
Solvent
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Insufficient standalone data. MoS calculation would require read-across from analogous hydroxybutyrate esters. Likely favorable given low use concentrations as solvent.

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
negligible
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Limited published toxicological data; read-across from structurally related hydroxy esters should be documented for CPSR.

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Concern Level: Moderate

Regulatory Flags

epa_safer_alternative

Frequently Asked Questions

Is Butyl Hydroxybutyrate safe in cosmetics?

Limited published toxicological data; read-across from structurally related hydroxy esters should be documented for CPSR. The EU classifies Butyl Hydroxybutyrate as "prohibited". Safety rating: MODERATE.

Is Butyl Hydroxybutyrate allowed in the EU?

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

What does Butyl Hydroxybutyrate do in cosmetics?

Butyl Hydroxybutyrate functions as: Solvent. It is classified as a cosmetic ingredient in our database. CAS number: 53605-94-0.

What is the Margin of Safety for Butyl Hydroxybutyrate?

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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