How to detect the key indicators of ultrafine sodium sulfate powder, such as purity, moisture content and particle size distribution?
Publish Time: 2024-12-24
Ultrafine sodium sulfate powder (Yuan Ming powder) is widely used in many industries. Its key indicators such as purity, moisture content and particle size distribution directly affect the performance and use effect of the product. Therefore, it is very important to accurately detect these indicators.
Purity detection: Purity is the primary indicator to measure the quality of ultrafine sodium sulfate powder. Commonly used detection methods include chemical method and spectral analysis. The chemical method indirectly judges the purity by adding specific chemical reagents and observing the reaction; while spectral analysis methods, such as infrared spectrometer and UV-visible spectrophotometer, can directly detect the composition and content in the sample, with higher accuracy and sensitivity.
Moisture content detection: Moisture content is a key factor affecting the stability and shelf life of ultrafine sodium sulfate powder. Commonly used detection methods are Karl Fischer titration and drying loss method. Karl Fischer titration determines the moisture content by measuring the reaction between the sample and Karl Fischer reagent, and is suitable for samples with low moisture content; while the drying loss method calculates the moisture content by drying the sample to constant weight at a certain temperature and weighing the mass difference before and after weighing.
Particle size distribution detection: Particle size distribution is an important indicator for evaluating the physical properties of ultrafine sodium sulfate powder. Commonly used detection methods include laser diffraction scattering method and electron microscopy observation method. The laser diffraction scattering method uses the scattering phenomenon of light to measure the particle size, and has the advantages of wide measurement range, high result accuracy, and convenient operation; while the electron microscopy observation method can directly observe the morphology and distribution of particles, which is reliable and intuitive.
In summary, the detection of key indicators such as purity, moisture content and particle size distribution of ultrafine sodium sulfate powder requires the use of a variety of detection methods and instruments. Through reasonable selection and operation, the accuracy and reliability of the test results can be ensured, providing strong support for product quality control and application. At the same time, these detection methods also provide a strong guarantee for the development of related industries.
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