SDS Volume

Volume 73. Metal and Ammonium Formate Systems, p None

Source Publication

Vasileva, V.; Cryst. Res. Technol. 30, 339-343 (1995).

Conditions:

Room Temp: Composition at 50 °C

Compilers:

St. Trendafilova, Chr. Balarew

Methodology:

The solubility in the system was studied by the Khlopin method of isothermal decrease of supersaturation [1]. Equilibrium was reached in 10-15 hr. $\ce{Cu^{2+}}$ was determined complexometrically at pH 5.5-6.0 using Xylenol Orange as indicator. $\ce{Sr^{2+}}$ was also determined complexometrically at pH 11 using Thymolphtalexon as indicator. The solid phase composition was determined by the graphic method of Schreinemakers for wet residues. X-ray diffraction analysis, DT and TG analysis were also used.

Sample Information:

1. The formates of copper and strontium were prepared by dissolving copper carbonate, and strontium carbonate respectively, in diluted formic acid. The reagents used were "p.a.".

Measurement Errors:

Ambient temperature: Not given.

Methodology Citation

¹ Balarew, Chr.; Karaivanova, V.; Oikova, T.; Comm. Dept. Chem. Bulg. Acad. Sci. 3, 637 (1970).