Alpha-phellandrene is one of a pair of phellandrene cyclic monoterpene double-bond isomers in which both double bonds are endocyclic (cf.
Definition
Alpha-phellandrene is one of a pair of phellandrene cyclic monoterpene double-bond isomers in which both double bonds are endocyclic (cf. alpha-phellandrene, where one of them is exocyclic). It has a role as a volatile oil component, an antimicrobial agent and a plant metabolite. It is a cyclohexadiene and a phellandrene.
Source: PubChem
US FDA substance register · UNII 49JV13XE39 · registered name .ALPHA.-PHELLANDRENE · single chemical substance
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
More data — names, identifiers, properties, test records, literature
Names & identifiers
- CAS No.chemical registry number
- 99-83-2
- EC No.EU chemical inventory number
- 202-792-5
- DTXSIDUS EPA chemical ID
- DTXSID4047593
- DTXCIDUS EPA compound ID
- DTXCID2027593
- IUPAC
- 2-Methyl-5-(propan-2-yl)cyclohexa-1,3-diene
- Molecular formula
- C10H16
- Molecular weight
- 136.238 g/mol
Measured properties
- Appearance
- Liquid · Colorless liquid, [Hawley]
- Boiling point
- 175 °C
- Melting point
- 249.00 °C. @ 760.00 mm Hg
- Solubility
- PRACTICALLY INSOL IN WATER, SOL IN ETHER /D- & L-FORMS/ · 5000 mg/L @ 25 °C (exp)
- Density
- 0.845-0.855
- Colour
- colourless
- Water solubility
- 2.862 ㎎/ℓ
- n-Octanol/water partition coefficient (Kow)
- 4.62
- Molecular weight
- 136.24
Values measured on the substance itself. The KOSHA data are a reference for writing and reviewing safety data sheets, not a specification for a commercial raw material.
Source: PubChem · KOSHA safety data sheets (Korea)
What products actually use it for
What the 9 products reported to the US EPA with this ingredient use it for. Products outside cosmetics are included, so the top few rows are its main uses.
- Fragrance7
- Flavouring and nutrient2
Source: US EPA CompTox dashboard
Related literature
- Ethosomal Gel Formulation of Alpha Phellandrene for the Transdermal Delivery in Gout · 2020
- Validation of a chromatographic method for α-phellandrene quantification in skin permeation studies · 2025
- Organometallic Complex Strongly Impairs Chikungunya Virus Entry to the Host Cells · 2020
- EFFECTIVENESS OF CURCUMA ORAL GEL AS AN ADJUNCT TO SCALING AND ROOT PLANING IN PATIENTS WITH GINGIVITIS – A SHORT CLINICAL TRIAL. · 2016
- Scientific Opinion on the safety and efficacy of aliphatic and aromatic hydrocarbons (chemical group 31) when used as flavourings for all animal species. · 2015
Linked databases 17
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- EU CosIng ingredient list 2
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register
- NIST Chemistry WebBook
- PubChem 2
- Tlooto literature search 2 3 4 5
- UniChem cross-reference IDs
- US EPA CompTox dashboard 2
- US EPA DSSTox chemical database
- US FDA substance registration (GSRS)
- US FDA Unique Ingredient Identifier (UNII)
- Wikidata