Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran

INCI: HEXAHYDRO-4,6,6,9,9-PENTAMETHYL NAPHTHOPYRAN

CAS Number
1922-67-4
Function
Fragrance agent (perfuming)
Safety Rating
GOOD

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status permitted
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted โ€” no specific CFR restriction; subject to general fragrance safety standards and IFRA compliance

For full compliance data across 55 jurisdictions, use the Substance Compliance tool.

Safety Data

Margin of Safety (MoS)
adequate
Dermal Absorption
moderate
Sensitization
low

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Structural similarity to polycyclic musks warrants attention to bioaccumulation potential; compliance with IFRA Standards is mandatory with no specific SCCS safety concern published.

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Concern Level: Low

Regulatory Flags

fragrance-component

Frequently Asked Questions

Is Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran safe in cosmetics?

Structural similarity to polycyclic musks warrants attention to bioaccumulation potential; compliance with IFRA Standards is mandatory with no specific SCCS safety concern published. The EU classifies Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran as "permitted". Safety rating: GOOD.

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.

What is the Margin of Safety for Hexahydro-4,6,6,9,9-pentamethyl-naphthopyran?

adequate 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.

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