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ASTM D4590-06

Historical Revision

Standard Test Method for Colorimetric Determination of <emph type="ital">p-tert</emph >-Butylcatechol In Styrene Monomer or AMS (&#x3b1;&#x2013;Methylstyrene) by Spectrophotometry

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1.1 This test method is applicable to the determination of residual 4-tertiary-butylcatechol (TBC) in styrene monomer or AMS in the 1 to 100 ppm range. Any other compound producing color at 490 nm when contacted with aqueous sodium hydroxide solution will interfere. It may be compensated for by including it in the preparation of the standard solutions, if its identity and concentration in the sample are known.

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 E 29.

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

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 statements on hazards, see Section 8.


This test method is suitable for determining the quantity of TBC inhibitor, both for the protection against polymerization while in transit and storage, and for internal quality control.

SDO ASTM: ASTM International
Document Number D4590
Publication Date June 1, 2006
Language en - English
Page Count 3
Revision Level 06
Supercedes
Committee D16.07
Publish Date Document Id Type View
Nov. 1, 2022 D4590-22 Revision
June 1, 2018 D4590-18 Revision
June 1, 2013 D4590-13 Revision
June 1, 2009 D4590-09 Revision
June 1, 2006 D4590-06 Revision
Dec. 10, 2000 D4590-95A Revision
Dec. 10, 2000 D4590-00 Revision