D974-2012：
2014：SUMMARY OF CHANGES
Subcommittee D02.06 has identified the location of selected changes to this standard since the last issue
(D974 – 12) that may impact the use of this standard. (Approved Dec. 1, 2014.) (1) Updated 9.1.
9.1 Into an appropriate size Erlenmeyer flask or a beaker,
introduce a weighed quantity of the sample as given in Table 1.
Add 100 mL of the titration solvent and 0.5 mL of the indicator
solution, and without stoppering, swirl until the sample is
entirely dissolved by the solvent. If the mixture assumes a
yellow-orange color, proceed as directed in 9.2; if it becomes
green or green-black, and base number analysis is required,
proceed as directed in Section 10.