ASTM D5776 - 14a

    Standard Test Method for Bromine Index of Aromatic Hydrocarbons by Electrometric Titration

    Active Standard ASTM D5776 | Developed by Subcommittee: D16.04

    Book of Standards Volume: 06.04


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    Significance and Use

    5.1 This test method is suitable for setting specification, for use as an internal quality control tool, and for use in development or research work on industrial aromatic hydrocarbons and related material. This test method gives a broad indication of olefinic content. It does not differentiate between the types of aliphatic unsaturation.

    1. Scope

    1.1 This test method determines the amount of bromine-reactive material in aromatic hydrocarbons and is thus a measure of trace amounts of unsaturates in these materials. It is applicable to materials having bromine indexes below 35. Materials with a higher bromine index can be analyzed by this method; however, the precision section does not apply.

    1.2 This test method is applicable to aromatic hydrocarbons containing no more than trace amounts of olefins and that are substantially free from material lighter than isobutane and have a distillation end point under 288°C.

    1.3 In determining the conformance of the test results using this method to applicable specifications, results shall be rounded off in accordance with the rounding-off method of Practice E29.

    1.4 The values stated in SI units are to be regarded as standard. No other units of measurement are included in this standard.

    1.5 This standard does not purport to address all of the safety concerns, if any, associated with its use. It is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use. For a specific hazard statement see Section 8.


    2. Referenced Documents (purchase separately) The documents listed below are referenced within the subject standard but are not provided as part of the standard.

    ASTM Standards

    D1159 Test Method for Bromine Numbers of Petroleum Distillates and Commercial Aliphatic Olefins by Electrometric Titration

    D1193 Specification for Reagent Water

    D3437 Practice for Sampling and Handling Liquid Cyclic Products

    D6809 Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials

    E29 Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications

    E691 Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method


    ICS Code

    ICS Number Code 71.080.15 (Aromatic hydrocarbons); 71.080.20 (Halogenated hydrocarbons)

    UNSPSC Code

    UNSPSC Code 12352005(Aromatic or heterocyclic compounds)


    DOI: 10.1520/D5776-14A

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