GB/T 12688.5-2019 "Test methods for styrene for industrial use - Part 5: Determination of total aldehydes content - Titrimetric method" specifies a titrimetric method for determining the total aldehydes content (calculated as benzaldehyde) in styrene for industrial use. The principle involves the reaction of aldehydes in the sample with hydroxylamine hydrochloride to form oximes, releasing an equivalent amount of acid. The released acid is then titrated with a standard sodium hydroxide solution to calculate the total aldehydes content.
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 | G16 | ICS | 71.080.15 |
| Release Date | 2019-06-04 00:00:00 | Implementation Date | 2020-05-01 00:00:00 |