SDS Volume
Volume 66. Ammonium Phosphates, p None
Source Publication
Bleshinskaya, L. S.; Sulaymankulov, K. S.; Davranov, M. D.; Yunusova, Z. Yu.; VINITI Nr. 120, 1983.
Conditions:
Room Temp: Composition at 30 °C
Compiler:
Methodology:
The isothermal method was used with 8 to 9 hours allowed for equilibration. Equilibrium was checked by repeated analyses. Ammonia content was determined by the formaldehyde method, total nitrogen by the Kjeldahl method, and biuret by the difference. No other details are given.
Sample Information:
- No information is given.
Measurement Errors:
Ambient temperature: No information is given.
Mass concentration (m/v) (1): No information is given.
System Components:
- Ammonium dihydrogenphosphate, $\ce{ NH4H2PO4 }$; [7722-76-1] NIST WebBook
- Biuret, $\ce{ C2H5N3O2 }$; [108-19-0] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| 100w1 | 100w2 | 100w3 | m1 (mol/kg) | m2 (mol/kg) | Phase (s) () |
|---|---|---|---|---|---|
| 3.08 | 96.92 | 0.306 | A | ||
| 3.71 | 2.85 | 93.44 | 0.345 | 0.294 | A |
| 9.42 | 2.37 | 88.21 | 0.928 | 0.259 | A |
| 23.00 | 2.26 | 74.74 | 2.674 | 0.291 | A |
| 28.32 | 1.89 | 69.79 | 3.526 | 0.261 | A |
| 29.30 | 2.06 | 68.64 | 3.710 | 0.289 | A + B |
| 29.28 | 2.08 | 68.64 | 3.707 | 0.292 | A + B |
| 29.88 | 1.54 | 68.58 | 3.786 | 0.216 | B |
| 30.44 | 0.94 | 68.62 | 3.855 | 0.13 | B |
| 31.69 | 68.31 | 4.032 | B |
(a) The molalities were calculated by the compiler.
(b) The solid phases are: A = NH(CONH2)2; B = NH4H2PO4.
