ASTM International

Standard Test Method for Analysis of Styrene by Capillary Gas Chromatography
 N D5135

Annotation

This test method covers the determination of the impurities typically found in styrene and uses those values to determine the purity of styrene by difference by gas chromatography. Typical impurities in commercial styrene are found in Table 1.

This test method is applicable to impurity concentrations in the range of 0.001 to 1.00 % and for styrene purities of 99 % or higher when using the internal standard procedure.

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.

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

This standard does not purport to address all 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 9.

*A Summary of Changes section appears at the end of this standard

Автоматический перевод:

Стандартный метод тестирования для анализа стирола капиллярной газовой хроматографией

Этот метод тестирования покрывает определение примесей, обычно найденных в стироле, и использует те значения для определения чистоты стирола различием газовой хроматографией. Типичные примеси в коммерческом стироле найдены в Таблице 1.