Violet tungsten oxide powder may be used to produce transparent thermal insulation nanopowder, and to prepare WC powder and W powder, so that the quality detection of violet tungsten oxide is particularly important.
The following is a method for directly controlling and detecting the quality of violet tungsten oxide - colorimetric method. The colorimetric method uses several colors of violet tungsten oxide to make several types of violet tungsten oxide standards, by comparing their colors to determine quality. For the producer, the quality of the violet tungsten oxide and the production state of the violet tungsten oxide can also be judged according to the color thereof.
The color of the violet tungsten oxide standard is roughly divided into violet, violet red, violet black, black blue, and blue. The analysis results show that the color of violet tungsten oxide is related to its oxygen index, the tightness of the particles, and the aspect ratio of the needle.
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