• ASTM D7881-19

ASTM D7881-19

Standard Test Method for Determination of 4-Carboxybenzaldehyde and p-Toluic Acid in Purified Terephthalic Acid by Capillary Electrophoresis with Reverse Voltage Mode

ASTM International , 11/01/2019

Publisher: ASTM

File Format: PDF

$31.00$62.00


1.1This test method2 covers the determination of 4-carboxybenzaldehyde (4-CBA) and p-toluic acid (p-TOL) in purified terephthalic acid (PTA) by capillary electrophoresis (CE) with reverse voltage mode and UV detection. It is applicable for 4-CBA from 3 to 400 mg/kg and for p-TOL from 8 to 400 mg/kg, respectively.

1.2In determining the conformance of the test results using this method to applicable specification, results shall be rounded off in accordance with the rounding-off method of Practice E29.

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

1.4This 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.

1.5This 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 D7881-19 History

ASTM D7881-20

ASTM D7881-20

$31.00 $62.00

ASTM D7881-19

ASTM D7881-19

$31.00 $62.00

ASTM D7881-13

ASTM D7881-13

$30.00 $60.00

More ASTM Standards PDF

ASTM F3043-14e1

ASTM F3043-14e1

$32.00 $65.00

ASTM B283/B283M-14a

ASTM B283/B283M-14a

$30.00 $60.00

ASTM D2272-14

ASTM D2272-14

$43.00 $86.00

ASTM E2962-14

ASTM E2962-14

$26.00 $52.00