Tetrahydro-2-isobutyl-4-methyl-2H-pyran (CAS 13477-62-8) is a cosmetic cosmetic ingredient functioning as Fragrance ingredient. NOAEL 500 mg/kg bw/day (cross-referenced against ToxValDB ECHA IUCLID); 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.
US NotesPermitted; RIFM safety assessment concluded safe as described
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Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Tetrahydro-2-isobutyl-4-methyl-2H-pyran.
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Toxicological Studies
2 study endpoints found for Tetrahydro-2-isobutyl-4-methyl-2H-pyran. 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
=500 mg/kg bw/day
oral
Rat
subchronic
ToxValDB_ECHA_IUCLID
NOAEL
=1000 mg/kg bw/day
oral
Rat
short-term
ToxValDB_ECHA_IUCLID
Pre-Calculated Safety Assessment
Pre-calculated NOAEL → SED → MoS audit trail for Tetrahydro-2-isobutyl-4-methyl-2H-pyran across SCCS product categories, with measured dermal absorption where available.
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
1 - 10 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Fragrance
Regulatory List Membership (1)
IFRA Fragrance Transparency List
Expert Verdict
Expert safety assessment and concern-level summary for Tetrahydro-2-isobutyl-4-methyl-2H-pyran.
Is Tetrahydro-2-isobutyl-4-methyl-2H-pyran safe in cosmetics?
Tetrahydro-2-isobutyl-4-methyl-2H-pyran has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted. 2 toxicological study endpoint(s) are available in our database.
Is Tetrahydro-2-isobutyl-4-methyl-2H-pyran allowed in the EU?
Tetrahydro-2-isobutyl-4-methyl-2H-pyran EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Tetrahydro-2-isobutyl-4-methyl-2H-pyran do in cosmetics?
Tetrahydro-2-isobutyl-4-methyl-2H-pyran functions as: Fragrance ingredient. It is classified as a cosmetic ingredient in our database. CAS number: 13477-62-8.
What is the NOAEL for Tetrahydro-2-isobutyl-4-methyl-2H-pyran?
The NOAEL (No Observed Adverse Effect Level) for Tetrahydro-2-isobutyl-4-methyl-2H-pyran is =500 mg/kg bw/day based on a subchronic study via oral route in Rat. A total of 2 study endpoints are available. Source: ToxValDB_ECHA_IUCLID.
Is Tetrahydro-2-isobutyl-4-methyl-2H-pyran used outside cosmetics?
Tetrahydro-2-isobutyl-4-methyl-2H-pyran 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
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