Product: Blue Silica Gel
CAS NO: 112926-00-8
Molecular formula: SiO2.nH2O
Properties:
Blue or light blue glass-like pellets or lumps. Including blue gel indicator, chromotropic silica gel and blue silica gel. Turning form blue to red after absorbing moistures.
Application:
Mainly used for absorbing moisture, anti-rusting of instruments, gauges and equipment in the enclosed condition. After absorbing moisture, it turns form blue to red, visually indicating the relative humidity of the given environments. When being used with ordinary silica gel or drier, it indicates to which extent the drier absorbs the moisture and judges the relative humidity of a given environment. It is widely used as silica gel drier for packing of precision instruments, leathers, shoes, clothes, foodstuffs, medicines and household electric appliances, etc.
Specification:
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Items
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Discoloring
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Blue
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Adsorption capacity, 25 ºC (%)
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RH=20%
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8.0 min.
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-
|
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RH=35%
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13.0 min.
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-
|
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RH=50%
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20.0 min.
|
18.0 min.
|
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RH=90%
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-
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28.0 min.
|
|
Rattler loss (%)
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10.0 max.
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10.0 max.
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|
Qualified size ratio (%)
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96 min.
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90 min.
|
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Loss on Heating (%)
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5.0 max..
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5.0 max.
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|
Color
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RH=20%
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Blue or light blue
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-
|
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RH=35%
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Purple or purplish red
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-
|
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RH=50%
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Lightred light
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Purple of light red
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Size
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1-3 mm , 2-5 mm, 4-8mm
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