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Standard Test Method for Analysis of High Purity Benzene for Cyclohexane Feedstock by Capillary Gas Chromatography
NORMA vydaná dňa 1.5.2023
Označenie normy: ASTM D5713-23
Dátum vydania normy: 1.5.2023
Kód tovaru: NS-1143949
Počet strán: 4
Približná hmotnosť: 12 g (0.03 libier)
Krajina: Americká technická norma
Kategória: Technické normy ASTM
Keywords:
benzene, cyclohexane feedstock, impurities,, ICS Number Code 71.080.15 (Aromatic hydrocarbons)
Significance and Use | ||||||||||||||
5.1?This test method is useful for benzene purity on the basis of impurities normally present in benzene and may be used for final product inspections and process control. 5.2?This test method will detect the following impurities: toluene, methylcyclopentane, n-hexane, 2-methylhexane, cyclohexane, cyclopentane, 2-methylpentane, 2,3-dimethylpentane, 3-methylhexane, 1.1?This test method covers the determination of specific impurities in, and the purity of benzene for cyclohexane feedstock by gas chromatography. 1.2?This test method has been found applicable to benzene in the range from 99 % to 100 % purity and to impurities at concentrations of 2 mg/kg to 10 000 mg/kg. The limit of detection (LOD) is 2 mg/kg for an impurity and the limit of quantitation (LOQ) is 6 mg/kg for an impurity. 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, health, and environmental practices and determine the applicability of regulatory limitations prior to use. 1.6?This international standard was developed in accordance with internationally recognized principles on standardization established in the Decision on Principles for the Development of International Standards, Guides and Recommendations issued by the World Trade Organization Technical Barriers to Trade (TBT) Committee. |
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