Abstract
The corrosivity of sulphur compounds present in petroleum products is measured by means of the ASTM D-130 copper strip test, which is based on discoloration of a standard copper strip immersed into the petroleum products at 50°C for 3 h. This paper studies the influence that mercaptans, sulphides or disulphides exert on corrosion produced by elemental sulphur in synthetic naphtha in the ASTM D-130 test by means of scanning electron microscopy (SEM) and energy dispersive X-ray (EDX) techniques. The synergistic effect of mercaptans on corrosion produced by elemental sulphur is an inverse function of the number of carbon atoms in linear mercaptans. For mercaptans with 6 carbon atoms corrosion activity follows the order: hexylmercaptan > cyclohexylmercaptan > thiophenol. In general, sulphides and disulphides decrease the corrosion produced by elemental sulphur. Among all the chemicals tested diphenyl disulphide is the best inhibitor of corrosion produced by elemental sulphur.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
