| Standard ID | QB/T 4970-2016 (QB/T4970-2016) |
| Description (Translated English) | Surface active agents. Determination of anionic surfactant in raw materials and formulated products. Potentiometric titration method |
| Sector / Industry | Light Industry Industry Standard (Recommended) |
| Classification of Chinese Standard | G73 |
| Word Count Estimation | 8,857 |
| Date of Issue | 2016-07-11 |
| Date of Implementation | 2017-01-01 |
| Regulation (derived from) | Ministry of Industry and Information Technology (2016 No. 37); Industry Standard Record Announcement 2016 No. 9 (Total No. 201) |
| Summary | This standard specifies potentiometric titration of anionic surfactants in the preparation of surfactant raw materials and formulated products. When the analysis results are expressed in mass fraction, the average relative molecular mass of the anionic surfactant is known or measured in advance. This standard does not apply to the determination of the presence of cationic surfactants. Note 1: Urea, ethylenediaminetetraacetate and sodium carboxymethylcellulose do not interfere. Note 2: When nonionic surfactants are present, their effects are estimated according to each special case. Note 3 |