Synthesizing state machines for data planes

Hexakis(urea-O)iron Complex Salts as a Versatile Material Family: Overview of Their Properties and Applications

“…The same preparation method was reinvented in a patent application for compound 1 as a fertilizer material. 24 Some compounds (X = NO 3 − , Cl − , ClO 4 − ) were also prepared in organic solvents such as ethanol or acetone. 16,25 However, this reaction route cannot be used for complexes, where the precursor iron(III) salts cannot be prepared easily or are very reactive, like those with anions of an oxidative nature, e.g., permanganate.…”

“…102,103 Hexakis(urea)iron(III) nitrate and chloride (compounds 1 and 2) are widely used as stable and slow releasing of nitrogen and iron sources in fertilizers. 5,24,104,105 Chein et al found that if the urea is fixed in different metal− urea complex salts, like hexakis(urea)iron(III) nitrate, the NH 3 volatilization losses from soils can be reduced compared to the normal urea usage. 105 Furthermore, if the urea complex salt of iron(III) nitrate was used, the free water content could be kept between 1.28% ad 2.08%, which helps prevent the deterioration of the fertilizer products during 6 weeks of storage.…”

“…105 A mixture of compound 1 and monocalcium phosphate monohydrate (MCP*H 2 O) or triple superphosphate (TSP) was also used as a phosphate carrier. 105 Chen et al 24 and Cao et al 5 described compound 1 as an excellent trace element fertilizer and long-lasting nitrogen fertilizer and proposed its use as a possible low-cost raw material.…”