IP 342: Petroleum products - Determination of thiol (mercaptan) sulfur in light and middle distillate fuels - Potentiometric method

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  • Method adopted/last revised:
  • Method reapproved: None
  • Status: Current
  • First printed in STM books: February 2013

This International Standard specifies a method for

the determination of thiol (mercaptan) sulfur in

light distillates, such as gasolines and naphtha fractions,

and middle distillate fuels, such as

kerosines and gas oils, in the range of  0,000 3 %

(m/m) to 0,0100 % (m/m) (3 mg.kg to 100 mg/kg).

Organic sulfur compounds such as sulfides, disulfides

and thiophene do not interfere.

Elemental sulfur does not interfere at contents

less than  0,000 5 % (m/m). Hydrogen sulfide

interferes, if not removed as described in 8.2.

NOTE For  the purposes of this International Standard,

the term "% (m/m)" is used to represent the mass

fraction of a material.

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