IUPAC-NIST Solubility Database
NIST Standard Reference Database 106

Glass Ball as Bullet Solubility System: Diammonium hydrogenphosphate with Thiourea, Methionine, Triethylamine hydrochloride and Water
Components:
   (1) Diammonium hydrogenphosphate; (NH4)2HPO4; [7783-28-0]  NIST Chemistry WebBook for detail
   (2) Methionine; C5H11NO2S; [59-51-8]  NIST Chemistry WebBook for detail
   (3) Thiourea; CH4N2S; [62-56-6]  NIST Chemistry WebBook for detail
   (4) Triethylamine hydrochloride; C6H16ClN; [554-68-7]  NIST Chemistry WebBook for detail
   (5) Water; H2O; [7732-18-5]  NIST Chemistry WebBook for detail
Evaluator:
   J. Eysseltová; Charles University; Prague, Czech Republic (September 1995)

 Critical Evaluation:
   
9.2. (NH4)2HPO4-Organic Compound-H2O

Systems with diammonium hydrogenphosphate, oprganic compound and water

          The (NH4)2HPO4 - CS(NH2)2 - H2O system is described in two articles.2,3 The 298 K isotherm and the complete phase diagram are given. These data are consistent with each other, but no critical evaluation can be made because there are no other data available.
          As far as similar systems containing diammonium hydrogenphosphate and an organic compound (which is both solid and water-soluble under ordinary room conditions) are concerned, there are two systems that have been studied: (a) the (NH4)2HPO4 - methionine - water system described by Beglov et al.;4 and (b) the (NH4)2HPO4 - (C2H5)3N·HCl - H2O system.1,5 No other independent data are available for these systems and, therefore, the information cannot be evaluated.



Experimental Data:   (Notes on the Nomenclature)

References: (Click a link to see its experimental data associated with the reference)
   1  Sosnina, O.E.; Volkov, A.A., Uch. Zap. Perm. Gos. Univ., Ser. Khim. 289, 20 (1973).
   2  Zakirov, B.S.; Tukhtaev, S.; Beglov, B.M., Dokl. Akad. Nauk Uzb. SSR, 40 (1974).
   3  Zakirov, B.S.; Tukhtaev, S.; Beglov, B.M.; Khaymov, B.M., Dokl. Akad. Nauk Uzb. SSR, 31 (1977).
   4  Beglov, B.M.; Zakirov, B.S.; and Amilova, D.A., Uzb. Khim. Zh., 61 (1985).
   5  Mazunin, S.A.; Sosnina, O.E.; Volkov, A.A.; Danina, T.L., Termicheskiy Analiz i Fazovye Ravnovesiya, Perm, 79 (1985).; Sosnina, O.E.; Volkov, A.A., Uch. Zap. Perm. Gos. Univ., Ser. Khim. 289, 20 (1973).