ITEM
|
spec
|
|
SnO2%≥
|
99.99
|
|
Pb%≤
|
0.010
|
|
Cd%≤
|
0.001
|
|
Fe%≤
|
0.001
|
|
Cu%≤
|
0.003
|
|
Ag%≤
|
0.020
|
|
As%≤
|
0.001
|
|
Sb%≤
|
0.002
|
|
Average particle size nm
|
200~300
|
< 100
|
Bulk density g/cm3≤
|
0.312
|
|
Surface Area sqm/g
|
5~10
|
10~25
|