Cetane Enhancers
Diesel specifications do not limit the use of cetane improvers in Northern Africa.
The cetane improver 2-Ethylhexyl nitrate (EHN) was used:
•In most samples in Algeria before 2018, in concentrations up to 410 mg/kg in 2016. However, EHN was only detected below 20 mg/kg as of 2018
•In most samples in Egypt, in concentrations ranging from below 10 mg/kg to 500 mg/kg
•In all samples in Libya, although it decreased overtime
•In Morocco and Tunisia, the EHN concentration greatly varied between samples, but the content has also decreased in the last year
•EHN was not detected in Sudan
Content of 2-EHN in countries in Northern Africa, 2011-2021