Polyphosphinic acid, aliphatic

Generally, these compounds form complexes with alkaline-earth metals that are less stable than the corresponding complexes of the polyphosphonic acids. WeiB and Hagele [96] investigated the chromatographic behavior of a variety of aliphatic and olefinic polyphosphonic and polyphosphinic acids, respectively, with 1 to 4 phosphorus atoms [87,88], that are applied in medicine and in pharmaceutical chemistry. 

Fig. 3-100. Separation of various aliphatic polyphosphinic acids. — Chromatographic conditions see Fig. 3-97 solute concentrations 20 ppm each of 2, 3, and 4.

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