Chromotropic silica gel
[character]
The appearance of discolored silica gel is blue or light blue glassy particles, which can be divided into spherical and massive particles according to their properties, with the characteristics of blue to red after moisture absorption.
[purpose]
1. It is mainly used for moisture absorption and rust prevention of instruments and equipment under the closed sky sword. At the same time, it can directly indicate the relative humidity of the environment through the blue to red color after moisture absorption.
2. It is used in combination with ordinary silica gel desiccant, only the degree of moisture absorption of desiccant and the relative humidity of judgment environment. As silica gel desiccant for packaging, it is widely used in precision instruments, leather, shoes, clothing, food, medicine and household appliances.
[Technical indicators]
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project |
index |
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blue |
orange |
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Adsorptioncapacity,% |
RH=50%≧ |
20.0 |
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Wear rate，% ≦ |
10.0 |
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Qualified rate of particle size,%≧ |
90 |
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Heating reduction,%≦ |
5.0 |
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Color change |
RH=50% |
Light red |
blackish green |
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