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You are here: Home » Product List » Industrial Silica Gel » PY-B  Type  B  silica  gel
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PY-B Type B silica gel

Product Description:
Appearance
:
milky white, semi-transparent spherical or granular.

Characteristics:
high adsorption capacity at high relative humidity, apply for control humidity and anti-condensation packaging.

Properties:
Type B silica gel belongs to an inorganic and an amorphous material, is a highly active adsorption material; non-toxic, odorless, chemically stable, won’t dissolve in any solvent except for alkali and hydrofluoric acid.

Making method:
is generally obtained by reaction of sodium silicate and sulfuric acid, then undergo the process of aging, acidic soaking, washing, surfactant treatment, first drying, sieve and secondary drying.

Including:
1. According to the shape:
(1) Type B beaded silica gel
(2)Type B semi-spherical silica gel
2. According to the application:
(1) Normal Type B (bulk density 500-600 g/l)
(2) Type B-L (bulk density 450-500 g/l)
(3) Type B-SL (bulk density 390-450 g/l)

Type B beaded silica gel  Sizes: 0.5-1.0mm、0.5-1.5mm、0.5-2mm、1-2mm、1-3mm、2-4mm、2-5mm、3-5mm 、4-8mm……
Type B semi-spherical silica gel  Sizes: 0.5-2mm、1.5-4mm、0.5-4.0mm

Basic quality datas:
Average pore diameter: 4.5-7.0nm
Surface area: 450-650m2/g ,
Pore volume:0.6-0.85ml/g
Technique parameter:
Items
 
Typical values
(Normal Type B
Typical values
Type B-L
Typical values
Type B-SL
Beaded Beaded Beaded Beaded
Appearance White, milky white or transparent White, milky white or transparent White, milky white or transparent White, milky white or transparent
Qualified size ratio, %  95 95 92 92
Bulk density G/L 500-600 500-600 450-500 390-450
Pore volum,  ml/g 0.65-0.85 0.65-0.85 ---- ----
Pore diameter nm 4.5-7.0 4.5-7.0 ---- ----
Adsorption capacity % RH= 20%   5 5 5 5
RH= 50%   11 11 11 11
RH= 90%   70 70 70 70
Qualified ratio of spherical granules %  85 85 85
Loss on heating% 2 2 2 2
PH  Value 5.5-7.5 5.5-7.5 6 - 8 6 - 8
Specific resistance  Ω .CM        8000 8000 10000 10000
SiO2 %        99 99 99  

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