Standardization of Titanous Solutions against Potassium Dichromate

Titrimetric Determination of Nitrogen in Nitrocellulose and of Nitrocellulose in Double-Base Propellants

“…Standardization of Titanous Chloride. Standardize the titanous chloride [daily before each series of determinations by titrating the solution against a 0.2000Ar potassium dichromate solution as described (10)]. The calculations for the iron content correction given in the reference can be greatly simplified to yield the following equations:…”

Volumetric Assay of Ammonium Perchlorate

“…Ferric solutions can be standardized directly after reduction in a Jones or silver reductor, with a primary standard such as potassium dichromate, or indirectly by a secondary standard such as titanous chloride solution which has been standardized against potassium dichromate. The latter method was used in this work and a correction was necessary for iron impurities in the titanous solution (9). The standardization of titanous solutions has been discussed by Lamond (7).…”