Process for making manganese (II) salt solutions containing ammonium salt

US4600565A · kind A · utility

Assignee

• Hoechst GmbH · DE

Inventors

• Klaus Lehr · Hürth, DE
• Bernhard Hofmann · Peißenberg, DE
• Gero Heymer · Lechenich, DE

Key dates

• Filing date: Mar 5, 1985
• Grant date: Jul 15, 1986
• Expiry date: Mar 5, 2005

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Manganese(II)salt solutions containing ammonium salt are made by subjecting a manganese-containing compound to processing treatment with an ammonium salt solution. A boiling temperature of 57.degree.-68.degree. C. is established in the suspension to be subjected to the processing treatment, by application of a vacuum. The ammonium salt solution used contains 0.5-2.5 mol/l diammonium sulfate or 1.0-5.0 mol/l ammonium nitrate.