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.
Function
Fragrance / Perfuming agent; green-type odor
Editorial assessment
GOOD
Preliminary editorial note — not a computed safety verdict.
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
Editorial summary
Preliminary editorial summary for tert-Butyl Isopentanethioate — not a computed safety verdict. See the sourced toxicological data above.
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
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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