GB/T 11135-2013
Standard test method for bromine numbers of petroleum distillates and commercial aliphatic olefins by electrometric titration (English Version)

Standard No.

GB/T 11135-2013

Language

Chinese, Available in English version

Release Date

2013

Published By

General Administration of Quality Supervision, Inspection and Quarantine of the People‘s Republic of China

Latest

GB/T 11135-2013

Replace

GB/T 11135-1989

Scope

This standard specifies the method for determining the bromine value of petroleum fractions and industrial aliphatic olefins by potentiometric titration. This standard applies to the determination of the bromine value of the following samples: a) Petroleum fractions whose 90% distillation temperature (measured by GB/T 6536) is below 327°C and do not contain components lighter than isobutane, such as gasoline (including leaded gasoline, unleaded gasoline and oxygenate fuels), kerosene and all distillates meeting the conditions in Table 1; b) industrial olefins with a bromine value between 95 g/100 g and 165 g/100 g. Industrial olefins are generally mixtures of aliphatic monoolefins, such as industrial propylene terpolymers, propylene tetramers, butene dimers, and mixtures of nonene, octene and heptene. The bromine value can reflect the amount of substances that can react with bromine, but it cannot be used to identify the types of substances. Appendix A gives the results of the bromine value of the compound determined by potentiometric titration. Only the compounds given in Appendix A can be used for the determination of olefinic unsaturation. To convert Bromine Number to Bromine Index, multiply by a factor of 1,000. However, for petroleum hydrocarbon mixtures whose bromine value is less than 1.0 g/100 g, in order to obtain more accurate determination results, it is recommended to use GB/T 11136 or SH/T 0630 method; For the sample, it can be determined by GB/T 11136, SH/T 0630 method or aromatic hydrocarbon bromine index determination method SH/T 1551, SH/T 1767. When selecting the determination method, attention should be paid to the scope of application of each standard method.

GB/T 11135-2013 Referenced Document

• GB/T 11136 Petroleum hydrocarbons--Determination of bromine index--Electrometric titration.
• GB/T 6536 Standard test method for distillation of petroleum products at atmospheric perssure
• GB/T 6682-2008 Water for analytical laboratory use.Specification and test methods
• SH/T 0630 Determination of bromine value and bromine index of petroleum products (electricity method)
• SH/T 1551 Determination of Bromine Index of Industrial Aromatic Hydrocarbons by Coulometric Titration*， 2018-09-01 Update
• SH/T 1767 Determination of bromine index of aromatic hydrocarbons.Electrometric titration

GB/T 11135-2013 history

• 2013 GB/T 11135-2013 Standard test method for bromine numbers of petroleum distillates and commercial aliphatic olefins by electrometric titration
• 1989 GB/T 11135-1989 Petroleum distillates and commercial aliphatic oletins--Determination of bromine number--Electrometric titration