ASTM International

ASTM D5776 - 07(2012) Standard Test Method for Bromine Index of Aromatic Hydrocarbons by Electrometric Titration


Source: ASTM International

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 500.

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 (550°F).

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 the standard. The values given in parentheses are for information only.

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)

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

Other Document
OSHARegulations,29 CFR paragraphs 1910.1000 and 1910.1200

Index Terms

aromatic hydrocarbons; bromine index; bromine-reactive; electrometric titration ; Aromatic hydrocarbons (AHs); Bromine index; Electrometric titration; Titration

ICS Code

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

DOI: 10.1520/D5776-07R12

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