Silica gel contains lots of small pores. It’s surface area covers 700 square meters per gram. Its surface and shape never change when saturated. Silica gel has the advantage of quick absorption speed, non-shape changing etc. It meets the requirement of JIS-0701 standard. Thus, Silica-gel desiccant is a traditional packing product for mildew-proof.
Character:
It is transparent and/or translucent globular particle, which is no-color or translucent globular particle, which is no-color or light yellow, but it is allowable to be mixed with elliptical nebula particles and a few brown particles. There is considerable large interior surface area of the particles, which is nonpoisonous and odorless. It is of high ability of absorbing water vapor and other condensed vapors.
Application:
It is used for gas-purifying, drying, humidity adjusting a-gent and catalyst carrier. It is also applied to refine petroleum products and to dryly store precision instruments, textile, food, drug and so on.
Molecular formula: 　　
mSiO2nH2O
Size: 4.0~8.0mm 2.0~5.6mm 1.0~3.0mm
Qualified particle: ≥99.8%
Bulk density: ≥770g/L, min
Absorption capacity: relative humidity RH20≥11.5%
relative humidity RH40≥28%
relative humidity RH80≥37%
Loss after drying at 150℃: ≤1.8%