Ethyl octadecanoate is an octadecanoate ester obtained by formal condensation between the carboxy group of octadecanoic (stearic) acid and the hydroxy group of ethanol.
How much products actually contain
No product states its amount yet.
Of the products containing it, 10 list it before the 1% line and 3 after it (usually 1% or less).
Products using this ingredient
12 of 13 confirmed · likeliest to carry enough first · See all 13
Westman AtelierWestman Atelier Eye Pods Eye Shadow - Toujours
Milk MakeupMilk Makeup Sunshine Under Eye Tint + Brighten with Vitamin C and Caffeine
Holo TacoHolo Taco Funny Feeling
Holo TacoHolo Taco Guilty Pleasure
Holo TacoHolo Taco Rage Bait
Holo TacoHolo Taco Simply Chaotic
Holo TacoHolo Taco Simply Deceased
Holo TacoHolo Taco Sprout Of Control
Holo TacoHolo Taco Deeply Superficial
GlossierGlossier Stretch Fluid Foundation
The Body ShopThe Body Shop Edelweiss Intense Smoothing Day Cream
Milk MakeupMilk Makeup Pore Eclipse Mattifying Primer
Definition
Ethyl octadecanoate is an octadecanoate ester obtained by formal condensation between the carboxy group of octadecanoic (stearic) acid and the hydroxy group of ethanol. It has a role as a plant metabolite. It is a long-chain fatty acid ethyl ester and an octadecanoate ester.
Source: PubChem
US FDA substance register · UNII C64RTC734W · registered name ETHYL STEARATE · single chemical substance
Cosmetic roles
Safety & regulatory references
Not classified under Korea’s toxic-substance GHS list · existing chemical substance
Other restriction: ban substances that deplete the ozone layer
Source: EU CosIng ingredient list
More data — names, identifiers, properties, test records, literature
Official labels & definitions
JCIA labelling name ステアリン酸エチル: 本品は、ステアリン酸(*)とエタノール(*)のエステルであり、次の化学式で表される。
Source: JCIA labelling names (Japan)
Names & identifiers
- CAS No.chemical registry number
- 111-61-5
- EC No.EU chemical inventory number
- 203-887-4
- DTXSIDUS EPA chemical ID
- DTXSID5059406
- DTXCIDUS EPA compound ID
- DTXCID5033202
- IUPAC
- Ethyl octadecanoate
- Molecular formula
- C20H40O2
- Molecular weight
- 312.538 g/mol
Measured properties
- Appearance
- Solid · Colourless, odourless mass
- Boiling point
- 213.00 to 215.00 °C. @ 15.00 mm Hg · 105 °C at 11mm Hg
- Melting point
- 33.4 °C
- Solubility
- Soluble in ethanol and oils, insoluble in water · (in ethanol)
- Density
- 0.880-0.900
- Odour
- odourless
- Melting/freezing point
- 26~35 ℃
- Initial boiling point and range
- 224 ℃
- Flash point
- &, gt, 109 ℃
- Vapour pressure
- (3E-5 mmHg (25 C))
- Water solubility
- 0.0001943 ㎎/ℓ
- n-Octanol/water partition coefficient (Kow)
- 9.21
- Molecular weight
- 312.53
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 7 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
- No specific technical function1
- Softener and conditioner1
Source: US EPA CompTox dashboard
Related literature
- Oryzalin-Induced polyploidy enhances natural metabolite accumulation and functional bioactivities in novel Callisia fragrans genotype · 2025
- Steroids and Fatty Acid Esters from Cyperus sexangularis Leaf and Their Antioxidant, Anti-Inflammatory and Anti-Elastase Properties · 2023
- Investigation of Structural Features of Two Related Lipases and the Impact on Fatty Acid Specificity in Vegetable Fats · 2022
- Hair growth-promoting activity of components derived from sweet potato shochu. · 2021
- Enzymatic esterification for the synthesis of butyl stearate and ethyl stearate · 2018
Linked databases 19
- Australian Industrial Chemicals Inventory (AICIS)
- ChEBI
- China inventory of existing ingredients (IECIC)
- EU CosIng ingredient list 2
- JCIA labelling names (Japan)
- Korea Cosmetic Association ingredient dictionary
- Korea toxic substances GHS register (NIER)
- KOSHA safety data sheets (Korea)
- MFDS (Korea) cosmetic ingredient register 2
- 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 · Chinese