Hydrochloric Acid → Sodium metatungstate

HRID 871799Notes

Reaction equation

HRID 871799 reaction equation
[O-:1][W:2]([O-:5])(=[O:4])=[O:3].[Na+:6].[Na+].Cl.S(=O)(=O)(O)O>>[O-:4][W:2]([O-:5])(=[O:3])=[O:1].[O-:4][W:2]([O-:5])(=[O:3])=[O:1].[O-:4][W:2]([O-:5])(=[O:3])=[O:1].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[O:1]=[W:2](=[O:4])=[O:3].[Na+:6].[Na+:6].[Na+:6].[Na+:6].[Na+:6].[Na+:6]

Participants

4

Reactant 3

HCID 313Hydrochloric AcidHCID 1118Sulfuric AcidHCID 26052Sodium tungstate

Product 1

HCID 3084108Sodium metatungstate

Procedure

First, a sodium tungstate aqueous solution having a pH of 9 or greater (sample 1) was prepared. A sodium polytungstate aqueous solution (sample 2) was prepared by adding hydrochloric acid to sample 1 for adjustment to a pH of 6. A sodium polytungstate aqueous solution (sample 3) was prepared by adding sulfuric acid to sample 1 for adjustment to a pH of 6. Further, WO3 concentration (hereinafter, the “WO3 concentration” will be referred to as “W concentration” unless otherwise stated) of each of the sodium polytungstate aqueous solutions of sample 2 and sample 3 having been through the pH adjustments was adjusted to 70 g/L (70 g of WO3 was contained per liter of the sodium polytungstate aqueous solution).

Workup

  1. customwas prepared
  2. customA sodium polytungstate aqueous solution (sample 2) was prepared
  3. concentrationFurther, WO3 concentration (hereinafter,
  4. concentrationthe “WO3 concentration”
  5. concentrationwill be referred to as “W concentration”

Sources & evidence

ORD record
ord-dbe991f9f92148e9a417b239d86cd01b
Source dataset
uspto-grants-2015_03
Patent number
US08974674B2

Reaction notes

Loading…