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Methods of test for petroleum and its products -- Determination of bromine number. Colour indicator titration method
This standard specifies a method for the determination of the bromine number of distillate liquid petroleum products which are substantially free from butanes and butenes.
The precision applies to such products with 90 %(V/V) distillation recovery temperatures below 205 °C up to bromine numbers of 115, and to products with distillation recovery temperatures between 205 °C and 327 °C up to bromine numbers of 15.
The distillation temperatures are those obtained by the procedures described in IP 123.
NOTE 1 - The bromine number does not correspond necessarily to a true content of unsaturates, since sulfur compounds and certain polycyclic aromatic hydrocarbons are reported to react with bromine.
NOTE 2 - Based on data given in the appendix to ASTM former method D 1158-59T, the reported behaviour of the main hydrocarbon types is as follows:
Identical with IP 129:2003.
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