Is tert-Butyl Isopentanethioate safe in cosmetics?
tert-Butyl Isopentanethioate has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
Good
Cosmetic Ingredient
tert-Butyl Isopentanethioate
INCI: TERT-BUTYL ISOPENTANETHIOATE (NOTE: COSING LISTS AS "TERT-BUTYL ISOPENTANETHIOATE"; YOUR QUERY LISTED "ISOPENT-2-ENTHIOATE" — THIS IS THE CLOSEST MATCH)
tert-Butyl Isopentanethioate (CAS 2432-91-9) is a cosmetic cosmetic ingredient functioning as Fragrance / Perfuming agent; green-type odor. EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety data.
View industrial chemical safety profile for CAS 2432-91-9 →
Auto-generated CPSR Part A draft with source citations
Function
Fragrance / Perfuming agent; green-type odor
Safety Rating
GOOD
Chemistry & Identifiers
IUPAC Name
S-butan-2-yl 3-methylbutanethioate
InChIKey
MQAVHZCNCJTJJP-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted in cosmetics as fragrance; also used as flavor agent
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for tert-Butyl Isopentanethioate.
Calculate MoS for your specific formulation with the MoS Calculator.
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Flavouring and nutrient
Fragrance
Regulatory List Membership (2)
IFRA Fragrance Transparency List
Consumer Product Chemical
Expert Verdict
Expert safety assessment and concern-level summary for tert-Butyl Isopentanethioate.
Regulatory Flags
fragrance-component
ifra_fragrance
Chemical Function
Fragrance
Flavouring and nutrient
Regulatory Lists
IFRA Transparency
Europe
consumer_product
Australian Status
AICIS status: listed
Frequently Asked Questions
Is tert-Butyl Isopentanethioate allowed in the EU?
tert-Butyl Isopentanethioate EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does tert-Butyl Isopentanethioate do in cosmetics?
tert-Butyl Isopentanethioate functions as: Fragrance / Perfuming agent; green-type odor. It is classified as a cosmetic ingredient in our database. CAS number: 2432-91-9.
Is tert-Butyl Isopentanethioate used outside cosmetics?
tert-Butyl Isopentanethioate also appears in industrial chemical safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check tert-Butyl Isopentanethioate compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
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Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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