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ASTM D6526-2012  用毛细管柱气相色谱法进行甲苯分析的标准试验方法

标准编号:ASTM D6526-2012
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中文标准名称:用毛细管柱气相色谱法进行甲苯分析的标准试验方法
英文标准名称:standard test method for analysis of toluene by capillary column gas chromatography
首次发布日期:确认有效
标准状态:确认有效
代替标准号:ASTM D6526-2010
语言:英文版,中文版
发布日期:2012-03-15
实施日期:2012-03-15
标准类别:美国材料与试验协会ASTM
中国标准文献分类法(中标分类CCS):化工 >> 有机化工原料 >> 基本有机化工原料
中国标准文献分类法(中标分类CCS):化工技术 >> 有机化学 >> 芳香烃
标准页数:5
引用标准:ASTM D3437;ASTM D4790;ASTM D6809;ASTM E29;ASTM E355;ASTM E691;ASTM E1510;OSHA Regulations, 29 CFR
标准简介:

This test method is suitable for determining the concentrations of known impurities in refined toluene and for use as an integral quality control tool where toluene is produced or used in manufacturing.

Toluene purity is reported, but a chromatographic analysis cannot determine absolute purity if unknown or undetected components are present in the sample.

1.1 This test method covers the determination of hydrocarbon impurities typically found in, and the purity of, samples containing 98 wt % and greater toluene. This test method is applicable to impurity concentrations in the range of 0.0005 to 1.6 wt %.

1.2 Monocyclic aromatic hydrocarbons containing 6 through 8 carbon atoms, cumene, 1,4x2013;dioxane, and nonaromatic aliphatic hydrocarbons containing up to 12 carbon atoms can be detected by this test method. The nonaromatic compounds are determined as a composite.

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 x201C;to the nearest unitx201D; 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. 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 and health practices and determine the applicability of regulatory limitations prior to use. For specific hazard statements, see Section 9.

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添加时间:2012/11/23
 
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