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1-Octene

CAS 25377-83-7 · 60/100 · High conf.

Also registered as 2 other CAS numbers

26746-84-9 · 111-66-0

1-Octene chemical structure

Concern score

60/100High concern based on regulatory listings.
High confidence

1-Octene in plain language

What it is

On cosmetic ingredient lists it appears as “Octene”.

Also known as Octene · Caprylene · alpha-OCTENE · alpha-Octylene · n-1-octene · Oct-1-ene

Show all 19 names

1-?Octene · 1-C8H16 · 1-Caprylene · 1-Octylene · 1-n-Octene · C8 · Dialen 8 · Gulftene 8 · Linealene 8 · Neodene 8 · Octene, 1- · Octa-1,8-diene · Octylene

What it does

Used in cosmetics as a solvent.

  • Solvent
  • Flavouring agent, flavouring agent
  • Fragrance
  • Flavouring
Is it a concern?
High concern: no hazard classifications on record. It is listed for cosmetic use in the EU.

Why it's flagged

EPA CPDat observed this chemical in 3 composition records across product categories including Industrial products, Laboratory supplies.

The score describes this ingredient's chemical identity — its hazard profile from published classifications and regulatory status — not the safety of any product it appears in.

Regulation

No restrictions found. 1-Octene appears in these published regulatory listings.

Recorded in these product areas

  • Found in consumer products
  • Industrial
  • EUEFSAEFSA opinion3 entries
    • Scientific Opinion on Flavouring Group Evaluation 25, Revision 2 (FGE.25Rev2): Aliphatic and aromatic hydrocarbons from chemical group 31 (EFSA CEF)Source →
    • Scientific opinion on Flavouring Group Evaluation 25, Revision 3 (FGE.25Rev3): Aliphatic hydrocarbons from chemical group 31 (EFSA CEF)Source →
    • Flavouring Group Evaluation 25, Revision 1 (FGE.25Rev1): Aliphatic and aromatic hydrocarbons from chemical group 31 (EFSA CEF)Source →
  • GLOBALJECFAEvaluated2 entries
    • JECFA evaluation record.Source →
    • JECFA evaluation record. Functional class: flavouring agent, flavouring agent.Source →
  • EUCosIngActiveListed in CosIng inventory for cosmetic use.
    • Listed in CosIng inventory for cosmetic use.Source →
  • GLOBALJECFANo safety concern at current levels of intake when used as a flavouring agentJECFA evaluation lists ADI No safety concern at current levels of intake when used as a flavouring agent. Functional class: flavouring agent, flavouring agent.
    • JECFA evaluation lists ADI No safety concern at current levels of intake when used as a flavouring agent. Functional class: flavouring agent, flavouring agent.Source →
  • USEPAcommercial use observedEPA CPDat observed this chemical in 3 composition records across product categories including Industrial products, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient, Fragrance.
    • EPA CPDat observed this chemical in 3 composition records across product categories including Industrial products, Laboratory supplies. EPA CPDat classifies this chemical for functional uses including Flavouring and nutrient, Fragrance.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

Independent scientific assessments cited by the records we hold, with the year and link where the record gives one.

  • SCCS

    EU Scientific Committee on Consumer Safety

    No SCCS opinion on file.

  • CIR

    Cosmetic Ingredient Review (US expert panel)

    No CIR safety assessment on file.

  • EFSA

    European Food Safety Authority

    • Scientific Opinion on Flavouring Group Evaluation 25, Revision 2 (FGE.25Rev2): Aliphatic and aromatic hydrocarbons from chemical group 31 (EFSA CEF)

      2011 · EU EFSA listing · Read the source →

    • Scientific opinion on Flavouring Group Evaluation 25, Revision 3 (FGE.25Rev3): Aliphatic hydrocarbons from chemical group 31 (EFSA CEF)

      2015 · EU EFSA listing · Read the source →

    • Flavouring Group Evaluation 25, Revision 1 (FGE.25Rev1): Aliphatic and aromatic hydrocarbons from chemical group 31 (EFSA CEF)

      2010 · EU EFSA listing · Read the source →

  • JECFA

    Joint FAO/WHO Expert Committee on Food Additives

    • JECFA evaluation record.

      Year not recorded · GLOBAL JECFA listing · Read the source →

    • JECFA evaluation lists ADI No safety concern at current levels of intake when used as a flavouring agent. Functional class: flavouring agent, flavouring agent.

      Year not recorded · GLOBAL JECFA listing · Read the source →

    • JECFA evaluation record. Functional class: flavouring agent, flavouring agent.

      Year not recorded · GLOBAL JECFA listing · Read the source →

Evidence & sources

No graded research studies for 1-Octene yet. This record is compiled from the published data sources below — registries and regulatory listings, not study findings.

8 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EFSA OpenFoodTox

    regulatory · updated 2026-10-04

    Open →
  • EPA Chemical and Products Database

    exposure · updated jan 24 1989

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    Open →
  • WHO JECFA Database

    regulatory · updated 2026-10-04

    Open →
  • openFDA Substance

    registry · updated 2026-05-24

    Open →
  • PubChem Live Enrichment

    chemistry · updated 2026-05-17

    Open →

Suitability

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

Food use

Food-use source coverage is present in the current record.

Good fit

The ingredient appears in food-oriented source coverage or allowed-use references, which makes food use easier to support than a context with no domain signal at all.

Fragrance avoidance

Not a strong fit for fragrance avoidance because it carries Fragrance.

Avoid

The ingredient itself is a fragrance-linked signal, so it is better treated as an avoid case when fragrance exposure is the main concern.

Where it has been recorded

How often EPA CPDat has listed 1-Octene in a product composition. These are source records, not Greenveil catalog products.

Source records

3

Named organisations

4

Industrial productsLaboratory supplies

Typical roles

SolventFlavouring agent, flavouring agentFragranceFlavouring
See products using 1-Octene →