1.1 本试验方法包括乙基纯度的测定 tert公司 -用气相色谱法测定丁基醚（ETBE）。它还提供了测量ETBE中杂质（如C）的程序 4. 至C 12 烯烃、甲基、异丙基和 tert公司 -丁醇、甲基仲丁基和甲基 tert公司 -戊基醚、丙酮和甲乙酮。 1.2 本试验方法不适用于汽油中ETBE的测定。 1.3 水不能通过本试验方法测定，应通过试验方法等程序进行测量 D6304 结果用于归一化色谱值。 1.4 ETBE中的大多数杂质通过试验方法得到分离，但也会遇到一些共洗脱。 1.5 本试验方法不适用于在高于180℃的温度下沸腾的杂质 °C或导致火焰离子化检测器响应差或无响应的杂质，如水。 1.6 首选以国际单位制计量单位表示的数值，并在整个标准中使用。还提供了常用的替代装置，以提高清晰度并帮助用户使用本试验方法。 1.7 本标准并非旨在解决与其使用相关的所有安全问题（如有）。本标准的用户有责任在使用前制定适当的安全、健康和环境实践，并确定监管限制的适用性。 1.8 本国际标准是根据世界贸易组织技术性贸易壁垒（TBT）委员会发布的《关于制定国际标准、指南和建议的原则的决定》中确立的国际公认标准化原则制定的。 ====意义和用途====== 5.1 ETBE产品中杂质的存在会对ETBE作为燃料添加剂的价值产生有害影响。主要关注氧化物和烯烃含量。本试验方法提供了ETBE产品组成的知识。这在过程操作控制评估、产品评估和监管目的中很有用。

1.1 This test method covers the determination of the purity of ethyl tert -butyl ether (ETBE) by gas chromatography. It also provides a procedure to measure impurities in ETBE such as C 4 to C 12 olefins, methyl, isopropyl and tert -butyl alcohols, methyl sec-butyl and methyl tert -amyl ethers, acetone, and methyl ethyl ketone. 1.2 This test method is not applicable to the determination of ETBE in gasoline. 1.3 Water cannot be determined by this test method and shall be measured by a procedure such as Test Method D6304 and the result used to normalize the chromatographic values. 1.4 Most of the impurities in ETBE are resolved by the test method, however, some co-elution is encountered. 1.5 This test method is inappropriate for impurities that boil at temperatures higher than 180 °C or for impurities that cause poor or no response in a flame ionization detector, such as water. 1.6 The values stated in SI units of measurement are preferred and used throughout the standard. Alternate units, in common usage, are also provided to improve clarity and aid the user of this test method. 1.7 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. 1.8 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. ====== Significance And Use ====== 5.1 The presence of impurities in ETBE product can have a deleterious effect upon the value of ETBE as a fuel additive. Oxygenate and olefin contents are of primary concern. This test method provides a knowledge of the composition of ETBE product. This is useful in the evaluation of process operations control, in the valuation of the product, and for regulatory purposes.