Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone)
INCI: LISTED AS FRAGRANCE COMPONENT; COMMONLY CALLED MASSOIA LACTONE (Δ-DECENOLACTONE, 6-PENTYL-5,6-DIHYDROPYRAN-2-ONE)
Regulatory Status
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Safety Data
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Expert Verdict
α,β-unsaturated lactone — electrophilic Michael acceptor mechanism creates sensitization risk; IFRA concentration limits apply; verify compliance with IFRA 50th Amendment standards; natural source (Massoia bark oil) may contain variable lactone levels
Regulatory Flags
Frequently Asked Questions
Is Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone) safe in cosmetics?
α,β-unsaturated lactone — electrophilic Michael acceptor mechanism creates sensitization risk; IFRA concentration limits apply; verify compliance with IFRA 50th Amendment standards; natural source (Massoia bark oil) may contain variable lactone levels The EU classifies Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone) as "permitted". Safety rating: MODERATE.
Is Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone) allowed in the EU?
Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone) EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone) do in cosmetics?
Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone) functions as: Fragrance ingredient; FEMA GRAS 3744 (flavor use). It is classified as a cosmetic ingredient in our database. CAS number: 54814-64-1 (racemic); 51154-96-2 (R-isomer).
What is the Margin of Safety for Tetrahydro-6-pent-2-enyl-pyran-2-one (Massoia Lactone)?
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.
Compliance Tools
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