Phosphoric acid, formation from white

Lecithin. A mixt of the diglycerides of stearic, palmitic and oleic acids, linked to the choline ester of phosphoric acid. Yellowish-white, waxy mass, obtained either from eggyolk or soybeans. Insol in w sol in ale, chlf and eth. Lecithin was used in Composition C (RDX 88.3, nonexpl oily plasticizer 11.1 lecithin 0.6%) to help prevent the formation of large crysts of RDX which would increase the sensitivity of the compn (Refs 1 4)... 

Traces of unreacted silica (Si02) in the SiC will produce a fluffy white precipitate, about which little is known. Certainly it is known that when hot concentrated phosphoric acid is in contact with glass hardware, the rapid formation of a fluffy gelatinous white precipitate is seen. From an X-ray diffraction analysis of the precipitate from operating fuel-cells, it was determined that the principal component was Si3(P04)4, although metallographic and SEM/EDS analyses support the presence of the other silico-phosphate complexes in varying amounts. 

Ferric casse occurs in white wines due to the formation of an unstable colloid resulting from a reaction between Fe " " ions and phosphoric acid (white casse). This colloid then flocculates and precipitates, in a reaction involving proteins. 

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