ASTM D6144-22
Standard Test Method for Analysis of AMS (α-Methylstyrene) by Capillary Gas Chromatography

Standard No.

ASTM D6144-22

Release Date

2022

Published By

American Society for Testing and Materials (ASTM)

Latest

ASTM D6144-22

Scope

1.1 This test method covers the determination of the purity of AMS (α-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-2cyclopentene-1-one, n-propylbenzene, tert-butylbenzene, secbutylbenzene, cis-2-phenyl-2-butene, acetophenone, 1-phenyl1-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-tertiarybutylcatechol (TBC or PTBC) 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 2.) Based on the results in ASTM Research Report RR:D16-1022, summarized in Table 2, the limit of quantitation for these impurities averages 4 mg/kg, while the limit of detection averages 1.2 mg ⁄kg. 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 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. For specific hazard statements, see Section 8. 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.

ASTM D6144-22 Referenced Document

• ASTM D3437 Standard Practice for Sampling and Handling Liquid Cyclic Products
• ASTM D4307 Standard Practice for Preparation of Liquid Blends for Use as Analytical Standards
• ASTM D4790 Standard Terminology of Aromatic Hydrocarbons and Related Chemicals
• ASTM D6809 Standard Guide for Quality Control and Quality Assurance Procedures for Aromatic Hydrocarbons and Related Materials
• ASTM E1510 Standard Practice for Installing Fused Silica Open Tubular Capillary Columns in Gas Chromatographs
• ASTM E29 Standard Practice for Using Significant Digits in Test Data to Determine Conformance with Specifications
• ASTM E355 Standard Practice for Gas Chromatography Terms and Relationships*， 2024-04-21 Update
• ASTM E691 Standard Practice for Conducting an Interlaboratory Study to Determine the Precision of a Test Method

ASTM D6144-22 history

• 2022 ASTM D6144-22 Standard Test Method for Analysis of AMS (α-Methylstyrene) by Capillary Gas Chromatography
• 2017 ASTM D6144-17 Standard Test Method for Analysis of AMS (&x3b1;-Methylstyrene) by Capillary Gas Chromatography
• 2013 ASTM D6144-13 Standard Test Method for Analysis of AMS (alpha;-Methylstyrene) by Capillary Gas Chromatography
• 2012 ASTM D6144-12 Standard Test Method for Analysis of AMS (alpha;-Methylstyrene) by Capillary Gas Chromatography
• 2008 ASTM D6144-08 Standard Test Method for Analysis of AMS (x03B1;-Methylstyrene) by Capillary Gas Chromatography
• 2004 ASTM D6144-04 Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography
• 1997 ASTM D6144-97 Standard Test Method for Analysis of AMS (alpha-Methylstyrene) by Capillary Gas Chromatography