Sell sodium wolframate

详情

Molecular formula: Na2WO4.2H2O 
Molecular weight: **9.*6 
Quality standard: Content ≥ *9.5%; *8.5% 
Sodium Tungstate Na2WO*2H2O 

Uses: Used for producing tungsten; As catalyst, mordant, pigment and analytical reagent and fabric weighting agent in textile industry; For producing fire retardant and water-proof fabrics... 
Packing: Pail, paper board pail or clad bag(plastics bag lining inside), net weight *0kg. Per unit. Index name index% High-class Refined Crude WO3 ≥ *9.0 ≥ *9.0 ≥ *8.0 Mo ≤ 0.*2 ≤ 0.*2 ≤ 0.*4 As ≤ 0.**1 ≤ 0.**2   Cu ≤ 0.***2     Fe ≤ 0.**1 ≤ 0.**2   SO4 ≤ 0.*2 0.*1   Si ≤ 0.**4 ≤ 0.*4   Water insoluble impurities (%) ≤ 0.**5 ≤ 0.*1   PH 8.**9 8.**9   Heavy metal (Pb) ≤ 0.**1 ≤ 0.**2   Cl   ≤ 0.*3