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Tantalum Oxide
Typically Minimum
Ta2O5
%
99.7
99.5
Bulk density g/cc
1.4 1.1
Typically Maximum
LOI
%
0.1
0.2
Impurities
Typically Maximum
Fluorine
F ppm
250 400
Iron
Fe ppm <100
200
Magnesium Mg ppm
< 50 50
Manganese Mn ppm
<50 50
Niobium
Nb ppm 400
600
Antimony Sb ppm
<50
100
Titanium
Ti ppm
<50 50
Silicon
Si ppm
<50 100
Tungsten W
ppm <50
100
Tantalum Oxide Optical Grade
Max
Niobium Nb ppm
50
Titanium
Ti ppm
10
Silicon
Si ppm
30
Iron
Fe ppm
10
Copper
Cu ppm
10
Cobalt
Co ppm
10
Nickle Ni
ppm
10
Chrome Cr ppm
10
Potassium/Sodium K/Na ppm
2000
Potassium Fluorotantalate (K2TaF7)
Typ Max
Antimony
Sb ppm
20
50
Calcium Ca ppm
30
50
Iron Fe
ppm 10
30
Magnesium Mg ppm
10
30
Manganese Mn ppm
10
30
Molybdenum Mo ppm
N.D,
30
Niobium Nb ppm
20
50
Phosphorous P ppm
10
50
Silica Si
ppm
N.D.
10
Titanium Ti ppm
10
20
Tungsten W ppm 10
30
Niobium Oxide
Typically Min
Nb2O5
%
99.7 99.5
Bulk Density g/cc
0.06 0.1
Max
LOI @1050C %
0.06 0.1
Impurities
Fluorine F
ppm
250 400
Iron
Fe ppm
100 150
Magnesium Mg ppm
< 50
50
Manganese Mn ppm
< 50 50
Antimony Sb ppm
< 50 100
Silicon
Si ppm
<50 100
Tantalum Ta ppm
200 400
Titanium Ti
ppm
<50 50
Tungsten
W ppm
<150 150
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