Product name: Silica for silicon rubber
Specification:
|
（Item） |
（Unit） |
710 |
720 |
|
（Appearance） |
/ |
White powder |
White powder |
|
Specific sureface area(N2) BET |
m2/g |
140~160 |
160~180 |
|
SiO2 |
w/% |
≧92.0 |
≧92.0 |
|
Heating Loss(105℃, 2h) |
w/% |
4.0~7.0 |
4.0~7.0 |
|
Ignition Loss(1000℃,2h) |
w/% |
≦6.0 |
≦6.0 |
|
pH Value |
/ |
6.0~7.0 |
6.0~7.0 |
|
DBP absorption value |
ml/g |
2.4-2.8 |
2.4-2.8 |
|
salt solution(Na2So4) |
w/% |
≦0.3 |
≦0.2 |
|
45µm residue on sieve |
w/% |
≦0.5 |
≦0.5 |
|
Pour density |
g/cm³ |
0.20~0.25 |
0.20~0.25 |
|
Cu |
mg/kg |
≦10 |
≦10 |
|
Fe |
mg/kg |
≦200 |
≦150 |
Packing: Net wt. 20kg woven bags
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