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ASTM D 4735 : 2009

Superseded
Superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

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superseded

A superseded Standard is one, which is fully replaced by another Standard, which is a new edition of the same Standard.

Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography
Available format(s)

Hardcopy , PDF

Superseded date

11-11-2014

Language(s)

English

Published date

12-01-2009

1.1 This test method covers the determination of thiophene in refined benzene in the range from 0.80 to 1.80 mg/kg for the Flame Photometric Detector (FPD), and from 0.14 to 2.61 mg/kg for the Pulsed Flame Photometric Detector (PFPD). For the PFPD, the minimum level of quantitation (LOQ) is 0.14 mg/kg and the minimum level of detection (LOD) is 0.04 mg/kg, as described in ASTM Research Report RR: D16-1038. The range of the test method may be extended by modifying the sample injection volume, split ratios, 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 to applicable specification using 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 The values stated in SI units are to be regarded as 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 specific hazard statements, see Section 7.

Committee
D 16
DocumentType
Test Method
Pages
6
ProductNote
Reconfirmed 2009
PublisherName
American Society for Testing and Materials
Status
Superseded
SupersededBy
Supersedes

ASTM D 7124 : 2017 Standard Specification for Benzene for Use with Zeolite Based Catalysts
ASTM D 7185 : 2017 Standard Specification for Low Toluene Low Dioxane (LTLD) Benzene
ASTM D 2359 : 2018 : REV A Standard Specification for Refined Benzene-535
ASTM D 4734 : 2018 : REV A Standard Specification for Refined Benzene-545
ASTM D 5871 : 2017 Standard Specification for Benzene for Cyclohexane Feedstock
ASTM D 7011 : 2015 : R2019 Standard Test Method for Determination of Trace Thiophene in Refined Benzene by Gas Chromatography and Sulfur Selective Detection

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