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ASTM D4735-96

Historical Revision

Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography

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1.1 This test method covers the determination of thiophene in refined benzene in the range from 0.5 mg/kg to 5.0 mg/kg. The range of the test method may be extended by modifying the sample injection volume, calibration range, or sample dilution with thiophene-free solvent.

1.2 This test method has been found applicable to benzene characteristic of the type described in Specifications D2359 and D4734 and may be applicable to other types or grades of benzene only after the user has demonstrated that the procedure can completely resolve thiophene from the other organic contaminants contained in the sample.

1.3 The following applies to all specified limits in this test method: for purposes of determining conformance with this test method, an observed value or a calculated value shall be rounded off "to the nearest unit" in the last right-hand digit used in expressing the specification limit in accordance with the rounding-off method of Practice E29.

1.4 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 specific hazard statements, see Section 7.


SDO ASTM: ASTM International
Document Number D4735
Publication Date Jan. 1, 2000
Language en - English
Page Count 4
Revision Level 96
Supercedes
Committee D16.04
Publish Date Document Id Type View
Nov. 1, 2024 D4735-24 Revision
June 1, 2019 D4735-19 Revision
June 1, 2015 D4735-15 Revision
Dec. 1, 2009 D4735-09 Revision
July 10, 2002 D4735-02 Revision
Jan. 1, 2000 D4735-96 Revision
Feb. 1, 2014 D4735-09R14 Reaffirmation
Jan. 1, 2000 D4735-96R00 Reaffirmation