...
2025-08-14 08:55
203
2. In the production of a pigment the steps comprising adding titanium acid cake containing titanium oxide and sulphuric acid to a solution containing barium sulphide in excess of the amount required to neutralize the sulphuric acid, while rapidly agitating the solution, mixing the resultant mass with a solution of zinc sulphate, and separating the composite precipitate.
...
2025-08-14 08:29
2778
...
2025-08-14 08:55
203
2. In the production of a pigment the steps comprising adding titanium acid cake containing titanium oxide and sulphuric acid to a solution containing barium sulphide in excess of the amount required to neutralize the sulphuric acid, while rapidly agitating the solution, mixing the resultant mass with a solution of zinc sulphate, and separating the composite precipitate.
...
2025-08-14 08:29
2778
...
2025-08-14 08:22
251