What is the NOAEL for 4-((4-Ethoxyphenyl)azo)naphthol?
4-((4-Ethoxyphenyl)azo)naphthol has 4 NOAEL studies in the database. The lowest reported value is XNW2E18207 UNII. Source: openFDA substances.
NOAEL Data
Cosmetic Ingredient
4-((4-Ethoxyphenyl)azo)naphthol
Also known as: 1-Naphthalenol, 4-[(4-ethoxyphenyl)azo]-, 1-Naphthalenol, 4-[2-(4-ethoxyphenyl)diazenyl]-, EINECS 229-439-8, UNII-XNW2E18207
CAS 6535-42-8
4-((4-Ethoxyphenyl)azo)naphthol (CAS 6535-42-8) is a chemical substance. Key regulatory status: 3 regulatory/inventory lists, cosmetic ingredient cross-reference; source data from EPA ToxValDB, EPA CPDat, AICIS.
SOURCE
noael studies public
NOAEL studies
4
SOURCE
chemical inventory jurisdictions
Regulatory lists
3
SOURCE
eu clp annex vi
GHS signal
Not classified
Chemical Identity
CAS, identifiers, formula, and alternate names for the matched substance record.
SOURCE
DSSTox identifiers
10 fields
Name
4-((4-Ethoxyphenyl)azo)naphthol
CAS Number
6535-42-8
DTXSID
DTXSID6064402
Molecular Formula
C18H16N2O2
InChI Key
JSEYDVLGSMLKDL-UHFFFAOYSA-N
Monoisotopic Mass
292.121178
Synonyms
1-Naphthalenol, 4-[(4-ethoxyphenyl)azo]-1-Naphthalenol, 4-[2-(4-ethoxyphenyl)diazenyl]-EINECS 229-439-8UNII-XNW2E18207
Functional Uses
Industrial and product-use categories associated with this substance.
SOURCE
EPA CPDat
5 records
DyeFragrance
Regulatory Lists
Inventory, screening, and regulatory list matches from public chemical databases.
SOURCE
EPA CPDat
3 records
| List | Keyword | Source |
|---|---|---|
| IFRA Transparency | IFRA | IFRA |
| Europe; Personal care | European Commission | CosIng |
| banned; Europe; Personal care | European Commission | CosIng |
NOAEL Studies
Toxicology endpoints rendered from public NOAEL study rows.
SOURCE
NOAEL studies
Showing 4 of 4 studies
| Value | Unit | Endpoint | Route | Species | Source |
|---|---|---|---|---|---|
| XNW2E18207 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| XNW2E18207 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| XNW2E18207 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
| XNW2E18207 | UNII | FDA UNII substance identifier | - | - | openFDA substances |
Showing 4 of 4 studies
Australian Status (AICIS)
Australian industrial chemicals inventory status and applicable conditions.
SOURCE
AICIS inventory
1 records
Inventory Status
listed
Cosmetic Safety Profile
Same-CAS cosmetic ingredient record for cross-vertical context.
SOURCE
CosIng / Ingredients DB
EU Status
permitted
Max
-
Category
Colorant
Frequently Asked Questions
What regulatory lists include 4-((4-Ethoxyphenyl)azo)naphthol?
4-((4-Ethoxyphenyl)azo)naphthol appears on 3 regulatory/inventory lists including IFRA Transparency, Europe; Personal care, banned; Europe; Personal care. Source: EPA CPDat.
Is 4-((4-Ethoxyphenyl)azo)naphthol used in cosmetics?
Yes, 4-((4-Ethoxyphenyl)azo)naphthol is also indexed as a cosmetic ingredient under the name Solvent Red 3. View the full cosmetic safety profile on the ingredient page for detailed safety data, SCCS opinions, and regulatory status.
Where does the safety data for 4-((4-Ethoxyphenyl)azo)naphthol come from?
Safety data is sourced from EPA ToxValDB, EPA CPDat, AICIS (Australian Industrial Chemicals Introduction Scheme), EPA DSSTox, CosIng / Ingredients DB. All data traces to primary regulatory sources and is updated from official government databases.
Is 4-((4-Ethoxyphenyl)azo)naphthol used outside industrial chemicals?
4-((4-Ethoxyphenyl)azo)naphthol also appears in cosmetics databases.