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GREENVEIL

  • cleaning
  • industrial
  • pharma

Solvent orange 2

CAS 2646-17-5

Also registered as 1 other CAS number

50926-67-5

Concern score

Not assessed — no hazard data yet.

Solvent orange 2 in plain language

What it is

Also known as Oil orange ss · C.I. solvent orange 2 · DAIDAI403 · 2-NAPHTHOL, 1-(O-TOLYLAZO)- · A.f. orange no. 2 · C.I. 12100

Show all 20 names

CI 12100 · D&C orange no. 2 (delisted) · Fat orange ii · Fat orange rr · FD&C orange no. 2 (delisted) · Lacquer orange v · Oil orange tx · Orange ot · Orange tx · 1-((2-METHYLPHENYL)AZO)-2-NAPHTHALENOL · 1-(o-Tolylazo)napht-2-ol · 1-o-Tolueneazo-2-naphthol · 1-o-Tolylazo-2-naphthol · Monoazo

What it does

Used in consumer products as a colourant.

  • Colourant
Is it a concern?
We haven't assessed a concern score for this ingredient yet.

Regulation

No restrictions found. Solvent orange 2 appears in these published regulatory listings.

  • Inactive ingredient in US drugs

Recorded in these product areas

  • Found in consumer products
  • Cleaning
  • Industrial
  • USFDAinactive ingredient database2 entries — 2 administration routes
    • Route: ORAL; Dosage form: TABLET, COATED; Potency: 0.07 mgSource →
    • Route: RECTAL; Dosage form: SUPPOSITORY; Potency: NASource →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 4 composition records across product categories including Laboratory supplies, Cleaning and safety, Construction. EPA CPDat classifies this chemical for functional uses including Dye.
    • EPA CPDat observed this chemical in 4 composition records across product categories including Laboratory supplies, Cleaning and safety, Construction. EPA CPDat classifies this chemical for functional uses including Dye.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Evidence & sources

No graded research studies for Solvent orange 2 yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

5 data sources

Where this comes from

  • EPA Chemical and Products Database

    exposure · updated March 8, 2019

    Open →

  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →

  • FDA Inactive Ingredient Database

    regulatory · updated 2026-01-09

    Open →

  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →

  • openFDA Substance

    registry · updated 2026-05-24

    Open →
Reference links (1)
Openfda substance

environmentalchemistry.com

Read →

Suitability

Context-specific fit derived from published classifications and the current ingredient evidence profile.

Fragrance avoidance

Nothing to weigh for this context yet.

No signal in this context

We have no published hazard signal for this ingredient, so we cannot say how it behaves in this context — that is missing evidence, not a clean result.

Where it has been recorded

How often EPA CPDat has listed Solvent orange 2 in a product composition. These are source records, not Greenveil catalog products.

Source records

4

Named organisations

3

Laboratory suppliesCleaning and safetyConstruction

Typical roles

Colourant
See products using Solvent orange 2 →