Prenol is a member of prenols and an alkenyl alcohol.
Definition
Prenol is a member of prenols and an alkenyl alcohol.
Source: PubChem
US FDA substance register · UNII 55MY0HM445 · registered name 3-METHYLBUT-2-EN-1-OL · 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
- 556-82-1
- EC No.EU chemical inventory number
- 209-141-4
- DTXSIDUS EPA chemical ID
- DTXSID2027206
- DTXCIDUS EPA compound ID
- DTXCID507206
- IUPAC
- 3-Methylbut-2-en-1-ol
- Molecular formula
- C5H10O
- Molecular weight
- 86.134 g/mol
Measured properties
- Appearance
- Colorless liquid with an alcoholic odor, [OECD SIDS: IUCLID Data Set] · Liquid
- Boiling point
- 138.00 to 174.00 °C. @ 760.00 mm Hg · 140 °C
- Melting point
- -59.3 °C
- Solubility
- Solubility in water, g/100ml at 20 °C: 17 (good) · Insoluble in water, soluble in fats
- Density
- 0.85 g/cm³ · Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.1
- Viscosity
- 3.5 mm²/s at 25 °C · (3mPa·s (25℃))
- Colour
- colourless
- Melting/freezing point
- -59.3 ℃
- Initial boiling point and range
- 140 ℃
- Flash point
- 50 ℃(c.c)
- Upper/lower flammability or explosive limits
- 16.3 / 2.7 %
- Vapour pressure
- 1.4 ㎜Hg (20℃)
- Water solubility
- 4.09E+004 g/100㎖ (25℃ est.)
- Vapour density
- 3
- Relative density
- 0.6660 (20℃)
- n-Octanol/water partition coefficient (Kow)
- 1.95
- Auto-ignition temperature
- 305 ℃
- Molecular weight
- 68.118
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 5 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.
- Fragrance3
- Flavouring and nutrient2
Source: US EPA CompTox dashboard
Irritation and sensitisation studies
3 skin studies and 1 eye studies are on record.
The study conclusions largely agree (100%). These tests are on the raw material itself; irritation at the amount in a finished product is a different question.
See all 4 studies
- Category 1
Skin Irritation · Screening - SkinIrr2
Skin Irritation · QSAR Predicted - Classification not possible
Skin Sensitization · Screening - Category 2A
Eye Irritation · Screening
Source: US EPA CompTox dashboard
Related literature
- Investigation of Heat-induced Chemical Changes in Black-eyed Beans (Phaseolus vulgaris) with and without Dichlorvos (Sniper) Treatment Using Gas Chromatography-mass Spectrometry (GC-MS) · 2025
- Review of the Phytochemistry and Biological Activity of Cissus incisa Leaves. · 2021
- Identification of Abies sibirica L. Polyprenols and Characterisation of Polyprenol-Containing Liposomes · 2020
- Role of lipid mediators in diabetic wound healing · 2020
- Optimized synthesis of novel prenyl ferulate performed by feruloyl esterases from Myceliophthora thermophila in microemulsions · 2017
Linked databases 16
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- ChEMBL
- EU CosIng ingredient list 2
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- 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
- Wikipedia · English · Japanese · Chinese