Is Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran safe in cosmetics?
Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran has a safety rating of "GOOD" in our database. EU status: permitted. US status: permitted.
GOOD
Cosmetic Ingredient
Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran
INCI: HEXAHYDRO-4,6,6,9,9-PENTAMETHYL NAPHTHOPYRAN
Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran (CAS 1922-67-4) is a cosmetic cosmetic ingredient functioning as Fragrance agent (perfuming). EU Regulation 1223/2009 status: permitted. Industrial safety data is also available in the chemical safety database.
Function
Fragrance agent (perfuming)
Editorial assessment
GOOD
Preliminary editorial note — not a computed safety verdict.
Chemistry & Identifiers
IUPAC Name
4,6,6,9,9-pentamethyl-3,4,7,8-tetrahydro-1H-benzo[g]isochromene
InChIKey
HIEQGQHLWHRFOV-UHFFFAOYSA-N
Regulatory Status
EU EU Status
permitted
US US Status
permitted
US Notes
Permitted — no specific CFR restriction; subject to general fragrance safety standards and IFRA compliance
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran.
Calculate MoS for your specific formulation with the MoS Calculator.
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Fragrance
Editorial summary
Preliminary editorial summary for Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
fragrance-component
Chemical Function
Fragrance
Australian Status
AICIS status: listed
Frequently Asked Questions
Is Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran allowed in the EU?
Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran EU regulatory status: permitted. This is based on EU Regulation 1223/2009 and its amendments.
What does Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran do in cosmetics?
Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran functions as: Fragrance agent (perfuming). It is classified as a cosmetic ingredient in our database. CAS number: 1922-67-4.
Compliance Tools
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Ingredient Decoder
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Substance Compliance
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MoS Calculator
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Heavy Metal Limits
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