Chemical Name: 1-Octadecanol
Synonyms: Stearyl Alcohol; Octadecyl alcohol; 1-Hydroxyoctadecane
CAS No.: 112-92-5
Molecular Formula: C18H38O
Molecular Weight: 270.49
Appearance: Solid
Parameter | 1-Octadecanol | Comparable Alcohols |
---|---|---|
CAS Number | 112-92-5 | Cetyl Alcohol (36653-82-4) |
Molecular Formula | C18H38O | C16H34O |
Melting Point | 56-59°C | 49-53°C |
Boiling Point | 210°C (15 mmHg) | 344°C |
Flash Point | 185°C | >100°C |
Key Features: White crystalline solid with mild odor, insoluble in water but soluble in ethanol/ether. Low volatility and stable chemical structure.
Application | Optimal Concentration | Key Benefit |
---|---|---|
Hair Conditioners | 2-3% | Improved combability & shine |
Metalworking Fluids | 1-1.5% | Enhanced lubricity at 150°C+ |
Maintains structural integrity up to 200°C with <0.5% decomposition
Passes OECD 439 skin irritation tests at 10% concentration
Challenge: Reduce formulation separation in SPF 50+ sunscreen
Solution: 1.8% 1-Octadecanol addition improved emulsion stability by 40%
Challenge: Minimize tool wear in high-speed CNC machining
Result: 1.2% additive reduced wear rate by 32%
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