This standard specifies the determination method of formaldehyde content in Spinning & weaving dyeing and finishing aids. It is suitable for the accurate determination of free formaldehyde content in fixing agents. High performance liquid chroma-tography, HPLC is used for quantitative analysis. The standard method is based on the reaction of formaldehyde with 4-amino-3-hydrazine-5-mercapto-1,2,4-triazacene under alkaline conditions, and the purple compound is generated by oxidation of potassium periodate. The standard provides a reliable determination method and technical support to ensure that the formaldehyde content of Spinning & weaving products meets the standard during use.
| Status | Active |
|---|---|
| CCS | (G70) 化学助剂基础标准与通用方法 | ICS | (71.100.40) 表面活性剂及其他助剂 |
| Release Date | 2012-12-28 00:00:00 | Implementation Date | 2013-06-01 00:00:00 |