GB/T 5550-2016 in English
VALIDSurface active agents--Determination of dispersing power
- Issued on:2016-10-13
- Implemented on:2017-05-01
- File Format:PDF
- Delivery:Via email within 1~3 business days
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《GB/T 5550-2016表面活性剂 分散力测定方法》由TC63（全国化学标准化技术委员会）归口，主管部门为中国石油和化学工业联合会。
Introduction
Interpretation of GB/T5550-2016 Surfactant Dispersion Force Determination Method
Standard Development Background and Technological Evolution
The GB/T5550 standard was first published in 1980 and has undergone several revisions. The latest version was implemented in 2016. This version of the standard mainly adds the following:
- Normative references GB/T6372
- Test report requirements
- More accurate dispersion force calculation method
| Standard version | Release year | Main changes |
|---|---|---|
| GB/T5550-1980 | 1980 | Basic version, does not include subsequent technical improvements |
| GB/T5550-1990 | 1990 | Added some experimental conditions details |
| GB/T5550-1998 | 1998 | First introduction of the percentage calculation method of dispersion force |
| GB/T5550-2016 | 2016 | Add normative references and test report requirements |
Principle and method of dispersion force determination
The dispersion force determination is based on the rapid addition of sulfuric acid to form an insoluble azo dye in the fast pigment red 3RS solution, and the dispersion ability is evaluated by the diffusion circle area of filter paper.
- Magnetic stirrer
- Volume flask(500mL)
- Stopwatch(range 1s~10h)
- Dispersion force tester
Implementation Recommendations
To ensure the accuracy of experimental results, it is recommended that:
- Prepare reagents and solutions in strict accordance with standard requirements
- Calibrate instruments and equipment regularly
- Operators must receive professional training
- Maintain stable laboratory environmental conditions
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