|
Index name |
Index%
|
Top grade
|
Industrial products |
|
WO3 |
≥69.0 |
≥69.0 |
≥68.0 |
|
Mo |
≤0.002 |
≤0.02 |
≤0.04 |
|
As |
≤0.001 |
≤0.002 |
|
|
Cu |
≤0.0002 |
|
|
|
Fe |
≤0.001 |
≤0.002 |
|
|
SO4 |
|
≤0.02 |
0.01 |
|
Si |
≤0.004 |
|
≤0.04 |
|
Water insolubles |
≤0.005 |
≤0.01 |
|
|
PH |
8-9 |
8-9 |
|
|
Heavy metals (Pb) |
≤0.001 |
≤0.002 |
|
|
Cl |
|
≤0.03 |
|
Uses: It is the intermediates product of Tungsten material; Can also be used in mordant, catalysts, pigments and analytical reagent, used as a weighting agent of fabric in the textile industry, used in the manufacturing of flame-retarding, waterproof fabric.
Packing: 25kg Cardboard barrel or plastic woven bag .
Specifications︰
Na2WO4.2H2O
Item%
Top Grade Good Grade Normal Grade
WO3 ≥69.0 ≥69.0 ≥68.0
Mo ≤0.02 ≤0.02 ≤0.04
As ≤0.001 ≤0.002
Cu ≤0.0002
Fe ≤0.001 ≤0.002
SO4 ≤0.02 0.01
Si ≤0.004 ≤0.04
Insoluble ≤0.005 ≤0.01
PH 8.5-9 8.5-9
Metal(Pb) ≤0.001 ≤0.002
Cl ≤0.03
Advantages︰
Na2WO4.2H2O
Item%
Top Grade Good Grade Normal Grade
WO3 ≥69.0 ≥69.0 ≥68.0
Mo ≤0.02 ≤0.02 ≤0.04
As ≤0.001 ≤0.002
Cu ≤0.0002
Fe ≤0.001 ≤0.002
SO4 ≤0.02 0.01
Si ≤0.004 ≤0.04
Insoluble ≤0.005 ≤0.01
PH 8.5-9 8.5-9
Metal(Pb) ≤0.001 ≤0.002
Cl ≤0.03
