This standard specifies methods for determining the content of hexamethylenetetramine (also known as methenamine) as a crosslinking or hardening agent in phenolic resins. The standard outlines three equivalent chemical analysis methods and clarifies their respective scopes of application. The typical experimental instruments used in these methods primarily include Kjeldahl nitrogen determination apparatus (comprising a fume hood, distillation unit, and titration unit) and an analytical balance for sample weighing.
This summary is not the original standard text and is for reference only. For accurate information, please obtain it through official channels.
| Status | Active | ||
|---|---|---|---|
| CCS | G31 | ICS | 83.080.01 |
| Release Date | 2016-12-13 00:00:00 | Implementation Date | 2017-07-01 00:00:00 |
