Characteristics:
Since it does not contain cobalt, cobalt-free blue silica gel has improved environmental protection and safety, reducing potential harm to the environment and human body. At the same time, it still has excellent hygroscopicity and color change indication function.
Application:
1. Humidity indication: Cobalt-free blue silica gel can visually indicate the humidity changes of the environment through color changes. When the humidity of the environment increases, the silica gel absorbs moisture and changes color, thus reminding the user to take timely measures to control the humidity.
2. Moisture-proof and mildew-proof: During packaging, storage and transportation, cobalt-free blue silica gel can effectively prevent products from getting damp, mildewed and deteriorating. It is widely used in moisture-proof protection in precision instruments, electronic equipment, leather products, footwear, clothing, food, medicine and other fields.
3. Environmental monitoring: In environments where humidity needs to be precisely controlled (such as laboratories, museums, libraries, etc.), cobalt-free blue silica gel can be used as a humidity monitoring tool
4. Safe application: Since cobalt-free blue silica gel does not contain toxic cobalt dichloride components, it is safer and more reliable in application scenarios that are in direct contact with food, medicine, etc. It does not pose a potential threat to human health, nor does it cause pollution to packaging.
Technical Specification:
Item | parameters | ||||
Blue Silica Gel | |||||
Blue Silica Gel with Cobalt | Blue Silica Gel without Cobalt | ||||
Ⅰ | Ⅱ | Ⅲ | |||
Adsorption Capacity(25℃)% | RH=20% | 8.5 | 8.0 | 8.5 | 9.0 |
RH=35% | 14.0 | 13.0 | 14.0 | 15.0 | |
RH=50% | 22.0 | 20.0 | 22.0 | 23.0 | |
Qualified Ratio of Particle,% ≧ | 95 | 95 | 95 | 95 | |
Qualified Ratio of Spherical Particle,% ≧ | 90 | 90 | 90 | 90 | |
Loss on drying, % ≦ | 2.0 | 2.0 | 2.0 | 2.0 | |
Color Changing | RH=20% | Blue or Light Blue | Blue | Blue | blue or deep blue |
RH=35% | Purple of Purple Red | Light Blue | Blue Purple | Blue Purple | |
RH=50% | Light Pink and Pink | Purple Red | Purple Red | Purple Red | |