Thermal analysis and FTIR studies of volatile corrosion inhibitor model systems

- Amine + 1-octanoic acid mixtures are employed as volatile corrosion inhibitors.
- They are applied as 1:1 salts to protect mild steel against atmospheric corrosion.
- Vapors released by such equimolar mixtures initially contain mostly free amine.
- After prolonged vaporization a steady-state composition is approached.
- This azeotrope-like composition is less effective at inhibiting corrosion.