【NAME】Orange Silica Gel Indicator
Its main component is silicon dioxide and its color varies with the
humidity. With the exception of blue silica gel’s performance, it
also has characters of cobalt chloride free, non-toxic, odorless,
Its molecular formula is: SiO2 + H2O + C25H30CLN3
【PERFORMANCE AND USAGE】
In 1998, the European Union has identified the cobalt chloride as
carcinogens in the second category. Blue silica gel with cobalt
chloride in Europe and the United States has been banning to
produce, and it has a tendency to be eliminated gradually. In order
to adapt to market’s needs, our company developed orange silica gel without cobalt chloride.
The product can be used alone or be mixed with other silica gel. To
dry and indicate the humidity, we can place appropriate amount of
the goods in appropriate containers or packaging to achieve this
This product is mainly used for drying, instructing the degree of
drying or humidity, and widely used in precision instruments,
pharmaceuticals, petrochemicals, food, clothing, leather, home
appliances and other industrial gases, etc. It can also be used for
domestic purposes such as moisture proofing and dehumidifying.
Orange silica gel has a strong capacity of absorption moisture. During the process
of absorption moisture, the appearance of the color changes
obviously according to the hygroscopic capacity. So it’s often
called "humidity indicator."
ORANGE SILICA GEL
Specific Surface Area（m2/g）
Average Pore Diameter（ nm）
Thermal Conductivity (KJ/m.Hr.
Specific Resistance ,.cm ≥
Silica ,% ≥
Qualified Ratio of Spherical Granules ,% ≥