This standard specifies two chemical analysis methods for determining the free formaldehyde content in polymer dispersions. Method A described in the standard is the spectrophotometric method, suitable for samples with formaldehyde content above 10 mg/kg; Method B is the high-performance liquid chromatography method, recommended for determining lower content or for arbitration analysis. This standard is applicable to various polymer dispersions such as acrylic and vinyl acetate. Implementation of this standard requires different core analytical instruments depending on the selected method. If the spectrophotometric method (Method A) is used, the main instrument is a UV-Vis spectrophotometer; if the high-performance liquid chromatography method (Method B) is employed, a high-performance liquid chromatograph equipped with appropriate chromatographic columns and detectors (such as UV or fluorescence detectors) is required.
| Status | Active | ||
|---|---|---|---|
| CCS | G31 | ICS | 83.080.01 |
| Release Date | 2023-09-07 00:00:00 | Implementation Date | 2024-04-01 00:00:00 |
