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Blue Silica Gel
Blue Silica Gel
中文名：蓝色硅胶
Blue silica gel can be divided into blue indicating silica gel, color-changing silica gel and blue silica gel. Its appearance is blue or light blue glass-like ball or lump.
Size: 1-3mm, 2-4mm, 2-5mm, 4-8mm.
Technical specifications
|
Item |
Blue gel indicator |
Discoloring silica gel |
Blue silica gel |
Typical values |
|
|
Adsorption capacity % |
RH=20% |
≥8.0 |
≥8 |
||
|
RH=35% |
≥13.0 |
≥13 |
|||
|
RH=50% |
≥20.0 |
≥20.0 |
≥18.0 |
≥22 |
|
|
RH=90% |
≥28.0 |
≥32 |
|||
|
Rattler loss % |
≤10.0 |
≤10.0 |
≤10.0 |
≤1 |
|
|
Qualified size ratio % |
≥96 |
≥90 |
≥90 |
≥95 |
|
|
Loss on heating % |
≤5.0 |
≤5.0 |
≤5.0 |
≤2 |
|
|
Color |
RH=20% |
Blue or light blue |
|||
|
RH=35% |
purple or purplish red |
||||
|
RH=90% |
light red |
Light red |
light purple or light red |
||
|
Packing and size can be adjusted according to customer’s different requirements. |
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Packaging
25kg/bag, 500kg/bag
Cobalt-free Blue Silica Gel
中文名：无钴蓝色硅胶
Size: 1-3mm, 2-4mm, 2-5mm, 4-8mm.
Technical specifications
|
Item |
Unit |
Index |
|
|
Adsorption Capacity |
RH=20% |
% |
≥9.9 |
|
RH=35% |
% |
≥20.2 |
|
|
RH=50% |
% |
≥25 |
|
|
RH=90% |
≥38.5 |
||
|
PH value |
2.02 |
||
|
Specific resistance |
?.cm |
≥633 |
|
|
Ratio of size Qualified |
% |
≥97 |
|
|
Ratio of spherical |
% |
≥85 |
|
|
Bulk density |
g/l |
776 |
|
|
Loss on heating |
% |
≤2 |
|
Packaging
25kg/bag, 500kg/bag
Application
Blue silica gel mainly used in various industries, through itself color changes after moisture absorption to indicate the level of desiccant moisture absorption and the relative humidity of the environment
Storage
Temperature 5 to 25 degrees, humidity≤70%, can't light or radiation, airtight save, do not contact with air directly.
Blue silica gel can be regenerated, it will be returned to the original color after heating-dehydration
Related information
Allochroic silica gel is divided into 3 types: blue silica gel, cobalt-free blue silica gel, orange silica gel.
Blue silica gel (blue to red) contains cobalt chloride, cobalt chloride color from blue to pink after absorbing water.
Cobalt-free blue silica gel (yellow to red) contains congo red, congo red itself can be used as an acid-base indicator, colour change interval PH3.5 ~ 5.2, alkali state to red, acid state to violet.
Orange silica gel (yellow to green) contains methyl violet, methyl violet color from yellow to green between PH0.13-0.5.