Ammonium biphosphate

Raman potassium, ammonium biphosphate single crystals. 

The ion suppression might be due to gas-phase reneutralrzation of the ion-evaporated anions. The response of raffinose is also enhanced by ammoninm formate and bicarbonate. Ammonium biphosphate suppresses the response of all acidic compounds. In the positive-ion mode, some compoimds, e.g., propranolol, terfenadine, and leserpine, show enhanced response at acid concentrations below 0.5%, while others show response suppression, e.g., risperidone. Surprisingly, the response of some bases, e.g., risperidone and terfenadine, is enhanced by addition of ammonium hydroxide. The response of pipenzolate, a quaternary ammonium compound, is not significantly influenced by additives, except TEA. Most basic compounds are suppressed by the addition of ammonium formate, bicarbonate, and biphosphonate [102]. 

AMMONIUM BIPHOSPHATE (7783-28-0) Contact with air slowly forms anhydrous ammonia. Contact with caustics forms anhydrous ammonia gas. Violent reaction with strong oxidizers, potassium chlorate. 

Ammonium, phenyltrimethyl-, hydroxide. See Tri methyl phenyl ammonium hydroxide Ammonium phosphate CAS 7722-76-1 EINECS/ELINCS 231-764-5 Synonyms Ammonium acid phosphate Ammonium biphosphate Ammonium dihydrogen orthophosphate Ammonium dihydrogen phosphate Ammonium phosphate monobasic... 

Polylysine Cationic, hydrophobic 5% ammonium biphosphate/ 3 /o acetonitrile (pH = 4.0)... 

For water, the second-order rate coefficient was determined as 9.5 x 10 12 by extrapolation from data at higher temperatures and using the presence of hydroxide ion to suppress any reaction with hydronium ion. For reaction with solutions of biphosphate and ammonium ions, since reaction via hydronium ions in these media is negligible (ca. 1 % of the total rate), the second-order rate coefficients were evaluated from exchange data at a single acid concentration as k2 (H2PC>4 ) = 3.89 xlO-7 and (NH ) = 5.0 x 10-9, the latter value being corrected for the water-catalysed reaction. 

The Treatment of Special Ores.—Alumina does not appear to induce retrogression. It may be removed by caustic alkalies or hot alkali carbonate solutions. Redonda phosphate (A1P04) may be made soluble by fusion with ammonium bisulphate, giving a dry powder which is a mixture of ammonium alum, ammonium bisulphate and biphosphate. 

---