ASTM-D4590 2022(Redline)

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D4590-22 Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry (Redline)

Published By	Publication Date	Number of Pages
ASTM	2022	6

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Categories: 71.080.60 - Alcohols. Ethers, ASTM

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Description

ASTM D4590-22

Redline Standard: Standard Test Method for Colorimetric Determination of p-tert-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry

ASTM D4590

Scope

1.1 This test method is applicable to the determination of residual 4-tertiary-butylcatechol (TBC) in styrene monomer or AMS in the 1 mg/kg to 100 mg/kg range.

1.2 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 limit of detection is 0.2 mg/kg while the limit of quantitation is 0.8 mg/kg based on the ILS data in Table 1.

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

1.4 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. For specific statements on hazards, see Section 9.

1.5 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.

Keywords

alpha-methylstyrene; AMS; para-tertiary butyl catechol; PTBC; styrene, inhibitor content; styrene, TBC content; TBC in styrene;

ICS Code

ICS Number Code 71.080.60 (Alcohols. Ethers)

DOI: 10.1520/D4590-22

Additional information

Standard Title	D4590-22 Standard Test Method for Colorimetric Determination of <emph type="ital">p-tert</emph >-Butylcatechol In Styrene Monomer or AMS (α–Methylstyrene) by Spectrophotometry (Redline)
Published Code	ASTM
Publication Date	2022
Pages Count	6
ICS Codes	71.080.60 - Alcohols. Ethers