Is 1,7-Naphthalenediol safe in cosmetics?
1,7-Naphthalenediol has a safety rating of "MODERATE" in our database. EU status: prohibited. US status: permitted.
MODERATE
Cosmetic Ingredient
1,7-Naphthalenediol
Also known as: Napthalene-1,7-diol, EINECS 209-383-0, NSC 62686, UNII-7D42F605CS
INCI: 1,7-NAPHTHALENEDIOL
1,7-Naphthalenediol (CAS 575-38-2) is a cosmetic cosmetic ingredient functioning as Hair dye coupler; structural isomer of 1,5-Naphthalenediol. EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in pharmaceutical data.
Function
Hair dye coupler; structural isomer of 1,5-Naphthalenediol
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.
Regulatory Status
EU EU Status
prohibited
US US Status
permitted
US Notes
Permitted under coal tar hair dye exemption; limited regulatory attention
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for 1,7-Naphthalenediol.
Calculate MoS for your specific formulation with the MoS Calculator.
EU CosIng Annex Listing
European Commission CosIng database Annex references per Regulation (EC) No 1223/2009.
Annex II — Prohibited
Ref: 1228
(EC) 2009/1223
Expanded Jurisdictional Detail
Additional regulatory detail beyond the 7-jurisdiction summary: Saudi SFDA, Korea MFDS, ASEAN ACD, Japan/Korea, Brazil/India, and cross-jurisdictional restriction entries.
SA Saudi SFDA (II - Prohibited)
BRIN Brazil/India Cosmetics
Brazil: Prohibited
India: Prohibited (GNRAS)
Additional Jurisdictional Restrictions (1)
| Jurisdiction | Status | Max % | Product Type |
|---|---|---|---|
| KR | prohibited | - | - |
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Dye
Regulatory List Membership (2)
EU Banned in Cosmetics
EU CosIng Cosmetics Ingredient Database
Editorial summary
Preliminary editorial summary for 1,7-Naphthalenediol — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
potential-allergen
eu_banned_cosmetics
eu_cosing_listed
Known Synonyms
Napthalene-1,7-diol
EINECS 209-383-0
NSC 62686
UNII-7D42F605CS
Chemical Function
Dye
Regulatory Lists
banned; Europe; Personal care
Australian Status
AICIS status: listed
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical data.
SOURCE
ChEMBL / DrugCentral / FAERS
DB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
ChEMBL ID
CHEMBL203378
Frequently Asked Questions
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.
Is 1,7-Naphthalenediol used outside cosmetics?
1,7-Naphthalenediol also appears in pharmaceutical data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Compliance Tools
Check 1,7-Naphthalenediol compliance across multiple jurisdictions:
Ingredient Decoder
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82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
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MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
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