Is Methyl Beta-Naphthyl Ether safe in cosmetics?
Methyl Beta-Naphthyl Ether has a safety rating of "MODERATE" in our database. EU status: prohibited. US status: permitted.
MODERATE
Cosmetic Ingredient
Methyl Beta-Naphthyl Ether
Also known as: Naphthalene, 2-methoxy-, beta-Methoxynaphthalene, beta-Naphthol mether ether, beta-Naphthol methyl ether, beta-Naphthyl methyl ether (+4 more)
INCI: METHYL BETA-NAPHTHYL ETHER
Methyl Beta-Naphthyl Ether (CAS 93-04-9) is a cosmetic cosmetic ingredient functioning as Fragrance. NOAEL 125 mg/kg bw/day (cross-referenced against ToxValDB ECHA IUCLID); EU Regulation 1223/2009 status: prohibited. Industrial safety data is also available in the chemical safety database. Same-CAS public records also appear in industrial chemical safety, pharmaceutical, and food safety data.
Cross-Vertical Regulatory Divergence
Methyl Beta-Naphthyl Ether is prohibited in EU cosmetics but has active industrial GHS classifications (H411).
Source: Cosmetics: ingredients.eu status; Chemicals: ghs classifications.signal word/hazard statement code
Function
Fragrance
Editorial assessment
MODERATE
Preliminary editorial note — not a computed safety verdict.
Chemistry & Identifiers
IUPAC Name
2-methoxynaphthalene
InChIKey
LUZDYPLAQQGJEA-UHFFFAOYSA-N
Regulatory Status
EU EU Status
prohibited
US US Status
permitted
US Notes
Allowed - no prohibition or restriction
For full compliance data across multiple jurisdictions, use the Substance Compliance tool.
Safety Data
Margin of Safety, dermal absorption, and sensitization profile summaries for Methyl Beta-Naphthyl Ether.
Calculate MoS for your specific formulation with the MoS Calculator.
Pre-Calculated Safety Assessment
Pre-calculated NOAEL → SED → MoS audit trail for Methyl Beta-Naphthyl Ether across SCCS product categories, with measured dermal absorption where available.
HRIPT Human Patch Test Studies
1 human repeat insult patch test aggregated from dermatological literature.
| Test Type | N | Sensitized | Dose µg/cm² | NESIL µg/cm² | Potency |
|---|---|---|---|---|---|
| HMT | - | 0 | 2592 | - | - |
ECHA REACH Registration
European Chemicals Agency REACH dossier and Substances of Very High Concern listing.
Registration Type
Full
Tonnage Band
1,000 - 10,000 tonnes
Substance Type
SUBSTANCE
SVHC Candidate
No
PubChem Annotations
Safety and regulatory annotations from PubChem (NCBI) aggregated sources.
Regulatory (4)
JECFA Number
1257
Source: WHO/JECFA
JECFA Evaluation
2-METHOXYNAPHTHALENE | 2003 | No safety concern at current levels of intake when used as a flavouring agent | TRS 922-JECFA 61/86 | FAS 52-JECFA 61/335
Source: WHO/JECFA
JECFA Evaluation
beta-NAPHTHYL METHYL ETHER | 2003 | No safety concern at current levels of intake when used as a flavouring agent | TRS 922-JECFA 61/86 | FAS 52-JECFA 61/335
Source: WHO/JECFA
JECFA Evaluation
YARA YARA | 2003 | No safety concern at current levels of intake when used as a flavouring agent | TRS 922-JECFA 61/86 | FAS 52-JECFA 61/335
Source: WHO/JECFA
Function Categories & List Membership
Cosmetic/Chemical Function Categories
Flavouring and nutrient
Fragrance
Regulatory List Membership (4)
IFRA Fragrance Transparency List
EPA Safer Chemical Ingredients List (SCIL)
FDA Substances Added to Food (EAFUS)
Consumer Product Chemical
Editorial summary
Preliminary editorial summary for Methyl Beta-Naphthyl Ether — not a computed safety verdict. See the sourced toxicological data above.
Regulatory Flags
potential-allergen
fragrance-component
epa_safer_alternative
ifra_fragrance
fda_food_additive
Known Synonyms
Naphthalene, 2-methoxy-
beta-Methoxynaphthalene
beta-Naphthol mether ether
beta-Naphthol methyl ether
beta-Naphthyl methyl ether
EINECS 202-213-6
Yara-Yara
Yura yara
UNII-VX2T1Z50C4
Chemical Function
Fragrance
Regulatory Lists
Cleaning products and household care - air freshener; Europe
air; Cleaning products and household care - air freshener; detected; emissions; Europe
Europe
IFRA Transparency
food_additive; Substances Added to Food (formerly EAFUS) (2/2019)
SCIL (9/2019)
consumer_product
Australian Status
AICIS status: listed
Cross-Vertical Safety Context
Same-CAS public records found in pharmaceutical and food safety data.
SOURCE
ChEMBL / DrugCentral / FAERS
DB_PHARMA CAS match
Pharmaceutical Data
Same-CAS rows from the pharmaceutical spoke database.
ChEMBL ID
CHEMBL195857
SOURCE
EFSA / FDA GRAS
food_additives
Food Safety Data
Same-CAS food additive or FDA GRAS records from the core public database.
Food Name
BETA-NAPHTHYL METHYL ETHER
ADI
No safety concern at current levels of intake when used as a flavouring agent mg/kg bw
Food Category
flavoring
Frequently Asked Questions
Is Methyl Beta-Naphthyl Ether allowed in the EU?
Methyl Beta-Naphthyl Ether EU regulatory status: prohibited. This is based on EU Regulation 1223/2009 and its amendments.
What does Methyl Beta-Naphthyl Ether do in cosmetics?
Methyl Beta-Naphthyl Ether functions as: Fragrance. It is classified as a cosmetic ingredient in our database. CAS number: 93-04-9.
Is Methyl Beta-Naphthyl Ether used outside cosmetics?
Methyl Beta-Naphthyl Ether also appears in industrial chemical safety, pharmaceutical, and food safety data. The cross-vertical cards on this page render same-CAS public rows from the matched databases.
Does Methyl Beta-Naphthyl Ether have different safety status in cosmetics vs industrial chemicals?
Methyl Beta-Naphthyl Ether is prohibited in EU cosmetics but has active industrial GHS classifications (H411).
Compliance Tools
Check Methyl Beta-Naphthyl Ether compliance across multiple jurisdictions:
Ingredient Decoder
Paste a full ingredient list for instant analysis
82 Allergen Checker
Check for EU declarable fragrance allergens
Substance Compliance
Check compliance across multiple jurisdictions
MoS Calculator
Calculate Margin of Safety using SCCS methodology
Heavy Metal Limits
Compare limits across jurisdictions
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