1,7-Naphthalenediol

INCI: 1,7-NAPHTHALENEDIOL

CAS Number
575-38-2
Function
Hair dye coupler; structural isomer of 1,5-Naphthalenediol
Safety Rating
MODERATE

Regulatory Status

๐Ÿ‡ช๐Ÿ‡บ EU Status prohibited
๐Ÿ‡บ๐Ÿ‡ธ US Status permitted
US Notes Permitted under coal tar hair dye exemption; limited regulatory attention

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

Safety Data

Margin of Safety (MoS)
not established
Dermal Absorption
low
Sensitization
moderate

Calculate MoS for your specific formulation with the MoS Calculator.

Expert Verdict

Insufficient safety dossier compared to 1,5-isomer; likely shares genotoxicity and sensitization profile. Verify current Annex II status before formulation use.

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Concern Level: High

Regulatory Flags

potential-allergen eu_banned_cosmetics eu_cosing_listed

Frequently Asked Questions

Is 1,7-Naphthalenediol safe in cosmetics?

Insufficient safety dossier compared to 1,5-isomer; likely shares genotoxicity and sensitization profile. Verify current Annex II status before formulation use. The EU classifies 1,7-Naphthalenediol as "prohibited". Safety rating: MODERATE.

Is 1,7-Naphthalenediol allowed in the EU?

1,7-Naphthalenediol EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.

What does 1,7-Naphthalenediol do in cosmetics?

1,7-Naphthalenediol functions as: Hair dye coupler; structural isomer of 1,5-Naphthalenediol. It is classified as a cosmetic ingredient in our database. CAS number: 575-38-2.

What is the Margin of Safety for 1,7-Naphthalenediol?

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.

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