India: Fuels: Biodiesel

IS 15607 Specifications

Properties of biodiesel are specified in the Indian Standard 15607. Originally published in 2005, it was revised in 2016 and 2022. The standard is based mainly on the European specification EN 14214, with some specifications taken from the ASTM D 6751 standard.

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The 2005 edition covered fatty acid alkyl (methyl or ethyl) esters for use as a blend component up to B20 in diesel engines. Differences between the 2005 edition and the EN/ASTM specifications in effect at the time partly reflect the focus on different feedstocks (such as jatropha and pongamia) and included:

• A number of specifications are not included: mono-, di- and tri-glycerides; poly unsaturated methyl ester; linolenic acid methyl ester; and low temperature properties (CP, CFPP, PP).
• Some parameters are only to be reported: Na, K, Ca, Mg and iodine value.
• The specification includes limits on both methanol and ethanol.

The 2016 edition was carried out to allow a greater variety of feedstocks to be used, covered only FAME, it enabled B100 to be used as an engine fuel and as a heating fuel, placed limits on glycerides and tightened the phosphorus limit. The 2022 edition enabled additional feedstocks such as used cooking oil and palm steric oil to be used.