2-(Heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethylamine (CAS 25749-86-4), also known as oleyl hydroxyethyl imidazoline, is an imidazoline surfactant with a C17-alkenyl tail. It is used as a corrosion inhibitor, emulsifier, antirust agent and softening/finishing agent in oilfield, metalworking, textile and coating applications.
Specifications
| Parameter | Value |
|---|---|
| Appearance | Brown yellow viscous liquid or paste like solid |
| Purity | >98% |
Applications
- Corrosion inhibitor in oil and gas production, refinery overhead systems and acid pickling baths.
- Emulsifier and antirust additive for metalworking fluids and lubricants.
- Textile softener and finishing agent; component in fabric conditioners.
- Intermediate for quaternized imidazolinium surfactants and amphoteric derivatives.
Storage and Packaging
Store in sealed containers in a cool, dry, ventilated area. Standard packaging: 200 kg steel drums or 1000 kg IBC tote.
FAQ
Is 2-(heptadecenyl)-4,5-dihydro-1H-imidazole-1-ethylamine a corrosion inhibitor? Yes, it is widely used as a film-forming corrosion inhibitor in oilfield and industrial acid systems.
Can it be quaternized? Yes, the tertiary amine nitrogen can be quaternized to produce cationic imidazolinium surfactants with higher charge density.



