Blue Silica Gel
The appearance of blue silica gel is translucent spherical particles, usually there are three types: blue silica gel, allochroic blue silica gel and blue silica gel indicator. Silica gel is easy to absorb moisture. At first it’s blue, and will gradually be transformed into light blue, finally it will turn to be pink.
Application:
Blue silica gel can be used in moisture absorption, because of the characteristic of allochromasia, it’s usually used to indicate the moisture level of desiccant, with ordinary silica gel desiccant, that’s the standard of judging the relative humidity. Blue silica gel is widely used in the package moistureproof of precisioninstrument, leather, costume, food, medicine and household appliances.
Main Index and Specification:
First class blue silica gel (2-4MM)
Appearance: blue or deep blue, uniform color without white spot, and inclusion-free.
Adsorption Capacity %,
RH=20%% ≥9.0, light blue
RH=35%% ≥14.0, aubergine
RH=50%% ≥23.0, pink
Particle size distribution
more than 4MM, % ≤1.0
3-4MM % 35.0-45.0
2-3MM % 55.0-65.0
less than 2MM % ≤0.4
FPY of particle size, %≥98.6
FPY of spherical particle, %≥95.0
Bulk Density G/L770-810
Loss on drying(under 150 degrees Celsius for two hours )≤clients’ requirement
Parameter of the Chemical Component
Chemical component
blue silica gel
SiO2 (wt%)
99.7
Fe2O3 (wt%)
0.008
Al2O3 (wt%)
0.025
CaO (wt%)
0.01
Na2O (wt%)
0.05
CoCl2 (wt%)
Package :
1. Compound Bag(inner package:vacuumized bag/kraftpaper bag, outside package:woven bag)
2. 150kg steel drum with liner in it
3. 25kg HDPE bag packing with liner inside.
Stuffing : 20 mt per 20 FCL