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About This Item
Full Description
1.1 This test method covers the determination of the purity of AMS (-methylstyrene) by gas chromatography. Calibration of the gas chromatography system is done by the external standard calibration technique.
1.2 This test method has been found applicable to the measurement of impurities such as cumene, 3-methyl-2-cyclopentene-1-one, n-propylbenzene, tert-butylbenzene, sec-butylbenzene, cis-2-phenyl-2-butene, acetophenone, 1-phenyl-1-butene, 2-phenyl-2-propanol, trans-2-phenyl-2-butene, m-cymene, p-cymene, and phenol, which are common to the manufacturing process of AMS. The method has also been found applicable for the determination of para-tertiary-butylcatechol typically added as a stabilizer to AMS. The impurities in AMS can be analyzed over a range of 5 to 800 mg/kg by this method. (See Table 1.) The limit of detection for these impurities is typically in the range of 5 to 10 mg/kg. (See Table 1.)
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 E 29.
1.4 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 specific hazard statements, see Section 8.
Document History
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ASTM D6144-22
Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography- Most Recent
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ASTM D6144-17
Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography- Historical Version
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ASTM D6144-13
Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography- Historical Version
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ASTM D6144-12
Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography- Historical Version
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ASTM D6144-08
Standard Test Method for Analysis of AMS (-Methylstyrene) by Capillary Gas Chromatography- Historical Version
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ASTM D6144-04
viewing
Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography- Historical Version
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ASTM D6144-97
Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography- Historical Version