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          泰州市安達有色金屬有限公司
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          Tungstic acid  

          H2WO4

          Chemical formula: H2WO4
          Properties: yellow powder, insoluble in water, soluble in caustic soda, soda ash, ammonia solution can generate tungstate.
          Specifications:

          Grade
          H2WO4-1
          H2WO4-2
          WO3 (%)
          88.0-91.0
          88.0-91.0
          Impurity content
          (as WO)
          not more than
          %
          Al
          0.001
          0.002
          As
          0.005
          0.005
          Bi
          0.001
          /
          Ca
          0.002
          0.005
          Co
          0.002
          /
          Cu
          0.001
          /
          Fe
          0.001
          0.003
          K+Na
          0.015
          0.020
          Mg
          0.001
          0.002
          Mn
          0.001
          /
          Mo
          0.006
          0.01
          Ni
          0.001
          /
          P
          0.001
          0.005
          Pb
          0.0001
          /
          S
          0.001
          0.003
          Si
          0.003
          0.005
          Sb
          0.001
          /
          Sn
          0.0005
          0.001
          Ti
          0.001
          0.002
          V
          0.001
          0.002

          Uses: Used in the production of tungsten powder, tungsten bar, tungsten wire, tungsten carbide and other chemical products.
          Packing: 25kg Cardboard barrel or plastic woven bag .
          Not: special specifications are negotiable.

           
               
           
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