Mandatory and voluntary requirements for diesel fuel have been established in Peru.
Legal requirements for on-road diesel fuel where established by decree D.S. N° 041-2005. Since 2006, the following sulfur limits have been in place: 0.30% mass for N°1 Diesel, 0.50% mass for N°2 Diesel and 0.050% mass for N°2 Special Diesel. Imported N°1 and N°2 Diesel fuel is limited to a maximum of 2500 ppm. By January 1, 2010, sulfur in all diesel fuels is scheduled to have a maximum limit of 0.005% mass (50 ppm).
Voluntary standards for diesel fuels are under the jurisdiction of the Instituto Nacional de Defensa de la Competencia y de la Protección de la Propiedad Intelectual (INDECOPI). In 2005, Norma Técnica Peruana NTP 321.003 2005 was published. Three grades of diesel fuel with sulfur contents or 1500, 350 and 50 ppm are defined.
Biofuels. Decree D.S. N° 021-2007 published in April 2007 defines the requirements for the commercialization and distribution of biofuels (ethanol and biodiesel) in Peru. Commercialization of mixtures of biodiesel/diesel fuel of B2, B5 and B20 only are permitted. Starting in 2007, B20 may be commercialized but only by wholesale distributors and only to customers authorized by the Director General of Hydrocarbons to receive this product. Also in 2007, B2 is approved for commercialization in the entire country. Starting January 1, 2009, blending B2 into Diesel No2 is mandatory across the entire country. Starting January 1, 2011, the mandatory blend level increases to B5. Wholesale distributors only are authorized to buy B100 from producers for the purpose of commercialization and blending into diesel fuel. The decree also requires that INDECOPI establish a national standard for B100. In the event that a national standard is not available, B100 is to conform to ASTM D 6751-06.