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gamma-Terpinene

CAS 99-85-4 · 70/100 · High conf.

gamma-Terpinene chemical structure

Concern score

70/100High concern based on regulatory listings.
High confidence

gamma-Terpinene in plain language

What it is

Also known as P-MENTHA-1,4-DIENE · 1,4-cyclohexadien, 1-methyl-4-(1- methylethyl)- · gamma-Terpinene; p-Mentha-1,4-diene · .gamma.-terpinene · .gamma.-terpinen · 1-Methyl-4-(propan-2-yl)cyclohexa-1,4-diene

Show all 23 names

1-methyl-4-propan-2-ylcyclohexa-1,4-diene · Crithmene · Moslene · 1,4-cyclohexadiene, 1- methyl-4-(1-methylethyl)- · 1,4-p-Menthadiene · 1-Isopropyl-4-methyl-1,4-cyclohexadiene · 1-Methyl-4-(1-methylethyl)-1,4-cyclohexadiene · 1-Methyl-4-isopropyl-1,4-cyclohexadiene · 1-isopropyl-4-methylcyclohexa-1,4-diene · 4-Isopropyl-1-methyl-1,4-cyclohexadiene · CYCLOHEXA-1,4-DIENE, 1-METHYL-4-(1-METHYLETHYL)- · Alpha terpinene · gamma terpinene · gamma-terpinene coeluted with 2,7-dimethyl-2,7- octanediol · terpene eg terpinene · terpinen · terpinene

What it does

Used in cosmetics as a fragrance ingredient.

  • Perfuming
  • Fragrance
  • Flavouring
Is it a concern?
High concern: no hazard classifications on record. It is restricted in EU cosmetics.

Why it's flagged

gamma-Terpinene; p-Mentha-1,4-diene is restricted in cosmetic products under Annex III of the EU Cosmetics Regulation (EC) 1223/2009.

RestrictedEU EC — restricted

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

Restrictions first, then routine listings from published regulatory sources.

  • EU Annex III — restricted
  • EU restricted in cosmetics

Recorded in these product areas

  • Found in consumer products
  • Cleaning
  • Industrial
  • EUEC

    Annex III of EU Cosmetics Regulation (EC) 1223/2009: substances which cosmetic products must not contain except subject to the restrictions laid down. Other conditions: Peroxide value less than 10 mmoles/L (15) Conditions of use and warnings: (15 ) This limit applies to the substance and not to the finished cosmetic product.’

    restricted
    View source →
  • EUCosIngActive2 entries
  • USEPAcommercial use observedEPA CPDat observed this chemical in 57 composition records across product categories including Home maintenance, Cleaning products and household care, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.
    • EPA CPDat observed this chemical in 57 composition records across product categories including Home maintenance, Cleaning products and household care, Cleaning and safety. EPA CPDat classifies this chemical for functional uses including Fragrance, Flavouring and nutrient.Source →
  • USFDAlisted in openFDA substanceopenFDA substance registry classifies this ingredient as chemical.
    • openFDA substance registry classifies this ingredient as chemical.Source →

Expert safety opinions

No expert opinion on file for gamma-Terpinene. These are the independent scientific bodies that assess ingredients like this one; we show an opinion only when a record we hold cites it.

  • 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.

Evidence & sources

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

7 data sources

Where this comes from

  • CosIng

    regulatory · updated 2026-09-23

    Open →
  • EU CosIng Cosmetics Regulation Annexes

    regulatory · updated 2013-05-17

    Open →
  • EPA Chemical and Products Database

    exposure · updated January 7, 2008

    Open →
  • EPA DSSTox Identifiers

    chemistry · updated 2025-12-29

    Open →
  • FDA GSRS UNII

    registry · updated 2026-02-26

    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.

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 gamma-Terpinene in a product composition. These are source records, not Greenveil catalog products.

Source records

57

Named organisations

6

Home maintenanceCleaning products and household careCleaning and safetyVehicle

Typical roles

PerfumingFragranceFlavouring
See products using gamma-Terpinene →