Violet tungsten oxide powder may be applied for manufacturing transparent thermal insulation material, which is widely applied in building window glass and car window glass. Therefore, the quality of violet tungsten oxide powder should be controlled strictly, which can be detected by colorimetric method. Colorimetric method is a relatively straightforward and effective way to detect the quality of violet tungsten oxide, saving time and money.
The color of violet tungsten oxide reflects its quality, and thus its quality can be discerned. The color of violet tungsten oxide is related to its oxygen index, degree of tightness of particles, and aspect ratio of needle. If the color is violet, the oxygen index is slightly higher, the needle is slightly thinner and slightly longer; If the color is violet red, the needle is slightly thicker and shorter. If you want to produce as few non-needle small particles as possible, use a more uniform APT or tungstic acid as the raw material.
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