1.1 This test method covers the determination of pyridine and other basic nitrogen impurities in crude and refined cresylic acids streams, including mixtures. 1.2 This test method is applicable for pyridine base levels of 0.001% to 0.5%.
ASTM
Standard Test Method for Pyridine Bases in Cresylic Acid by Direct Titration
STD-51764
2000
2004-06-01
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