Stearyl alcohol, or 1-octadecanol, is an organic compound classified as a saturated fatty alcohol with the formula CH₃(CH₂)₁₆CH₂OH. It takes the form of white granules or flakes, which are insoluble in water. It has a wide range of uses as an ingredient in lubricants, resins, perfumes, and cosmetics. It is used as an emollient, emulsifier, and thickener in ointments, and is widely used as a hair coating in shampoos and hair conditioners. Stearyl heptanoate, the ester of stearyl alcohol and heptanoic acid (enanthic acid), is found in most cosmetic eyeliners. Stearyl alcohol has also found application as an evaporation suppressing monolayer when applied to the surface of water.^[2]

Quick Facts Names, Identifiers ...

Stearyl alcohol^[1]

Names
Preferred IUPAC name Octadecan-1-ol
Other names 1-octadecanol
Identifiers
CAS Number	112-92-5 Y
3D model (JSmol)	Interactive image
ChEBI	CHEBI:32154 Y
ChEMBL	ChEMBL24640 Y
ChemSpider	7928 Y
ECHA InfoCard	100.003.652
PubChem CID	8221
UNII	2KR89I4H1Y Y
CompTox Dashboard (EPA)	DTXSID8026935
InChI InChI=1S/C18H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3 Y Key: GLDOVTGHNKAZLK-UHFFFAOYSA-N Y InChI=1/C18H38O/c1-2-3-4-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19/h19H,2-18H2,1H3 Key: GLDOVTGHNKAZLK-UHFFFAOYAZ
SMILES OCCCCCCCCCCCCCCCCCC
Properties
Chemical formula	C18H38O
Molar mass	270.49 g/mol
Appearance	White solid
Density	0.812 g/cm3
Melting point	59.4 to 59.8 °C (138.9 to 139.6 °F; 332.5 to 332.9 K)
Boiling point	210 °C (410 °F; 483 K) at 15 mmHg (2.0 kPa)
Solubility in water	1.1×10−3 mg/L
Hazards
Flash point	185 °C (365 °F; 458 K)
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is YN ?) Infobox references

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Stearyl alcohol is prepared from stearic acid or certain fats by the process of catalytic hydrogenation. It has low toxicity.^[3]