SDS Volume
Volume 66. Ammonium Phosphates, p None
Source Publication
Bel'chev, F. V.; Bergman, A. G.; Zh. Prikl. Khim. 1944, 17, 520.
Conditions:
Room Temp: -10 , -5 , 0, 10 , 20 and 30 °C
Compilers:
Methodology:
A visual polythermic method was used. 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
- Ammonium sulfate, $\ce{ (NH4)2SO4 }$; [7783-20-2] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| $T$ (°C) | 100w1 | 100w2 | 100w3 | $100 x_{1} (\rm{solutes})$ (mol/100 mol) | $100 x_{2} (\rm{solutes})$ (mol/100 mol) | $100 x_{3} (\rm{solutes})$ (mol/100 mol) | m1 (mol/kg) | m2 (mol/kg) | Phase (s) () |
|---|---|---|---|---|---|---|---|---|---|
| -10 | 0.0 | 29.4 | 70.6 | 0a | 1E+2a | 1.781 x 103a | 0.0 | 3.2 | A |
| -10 | 2.8 | 27.2 | 70.0 | 5.50 | 94.5 | 1.879 x 103 | 0.3 | 2.9 | A |
| -10 | 6.0 | 24.0 | 70.0 | 12.56 | 87.44 | 1.876 x 103 | 0.7 | 2.6 | A |
| -10 | 7.6 | 22.2 | 70.2 | 16.41 | 83.59 | 1.538 x 103 | 0.9 | 2.4 | B |
| -10 | 6.3 | 28.1 | 65.6 | 11.25 | 88.74 | 1.518 x 103 | 0.8 | 3.2 | B |
| -10 | 4.8 | 36.1 | 59.1 | 6.82 | 93.18 | 1.139 x 103 | 0.7 | 4.6 | B |
| -10 | 4.6 | 37.8 | 57.6 | 6.71 | 93.29 | 1.069 x 103 | 0.7 | 5.0 | B + C |
| -10 | 2.4 | 39.1 | 58.5 | 3.26 | 96.74 | 1.065 x 103 | 0.4 | 5.1 | C |
| -10 | 0.0 | 40.4 | 59.6 | 0 | 1E+2 | 1.081 x 103 | 0.0 | 5.1 | C |
| -5 | 0.0 | 16.7 | 83.3 | 0 | 1E+2 | 3.66 x 103 | 0.0 | 1.5 | A |
| -5 | 3.4 | 14.4 | 82.2 | 11.38 | 88.62 | 3.708 x 103 | 0.4 | 1.3 | A |
| -5 | 7.0 | 11.6 | 81.4 | 25.42 | 74.58 | 3.875 x 103 | 0.7 | 1.1 | A |
| -5 | 10.0 | 9.0 | 81.0 | 38.74 | 61.26 | 4.05 x 103 | 1.1 | 0.8 | A |
| -5 | 13.7 | 6.0 | 80.3 | 56.73 | 43.27 | 4.27 x 103 | 1.5 | 0.6 | A + B |
| -5 | 12.7 | 8.7 | 78.6 | 45.46 | 54.55 | 3.606 x 103 | 1.4 | 0.8 | B |
| -5 | 9.6 | 18.0 | 72.4 | 23.22 | 76.78 | 2.27 x 103 | 1.2 | 1.9 | B |
| -5 | 7.2 | 28.1 | 64.7 | 12.7 | 87.3 | 1.472 x 103 | 1.0 | 3.3 | B |
| -5 | 5.4 | 36.1 | 58.5 | 7.77 | 92.23 | 1.12 x 103 | 0.8 | 4.7 | B |
| -5 | 5.2 | 38.0 | 56.8 | 7.37 | 92.63 | 1.01 x 103 | 0.8 | 5.1 | B + C |
| -5 | 2.4 | 39.6 | 58.0 | 3.0 | 96.76 | 1.048 x 103 | 0.4 | 5.2 | C |
| -5 | 0.0 | 40.8 | 59.2 | 0 | 1E+2 | 1.066 x 103 | 0.0 | 5.2 | C |
| 0 | 18.8 | 0.0 | 81.2 | 1E+2 | 0 | 5.62 x 103 | 2.0 | 0.0 | B |
| 0 | 14.7 | 8.6 | 76.7 | 49.4 | 51.6 | 3.55 x 103 | 1.7 | 0.8 | B |
| 0 | 10.7 | 17.8 | 71.5 | 25.42 | 74.58 | 2.198 x 103 | 1.3 | 1.9 | B |
| 0 | 8.0 | 27.6 | 64.4 | 14.05 | 85.95 | 1.477 x 103 | 1.1 | 3.2 | B |
| 0 | 5.9 | 35.7 | 58.4 | 8.48 | 91.52 | 1.098 x 103 | 0.9 | 4.6 | B |
| 0 | 5.4 | 38.0 | 56.6 | 7.42 | 92.58 | 1.013 x 103 | 0.8 | 5.1 | B + C |
| 0 | 5.0 | 38.5 | 56.5 | 7.03 | 92.97 | 1.002 x 103 | 0.8 | 5.2 | C |
| 0 | 2.4 | 40.0 | 57.6 | 3.2 | 96.8 | 1.021 x 103 | 0.4 | 5.3 | C |
| 0 | 0.0 | 41.2 | 58.8 | 0 | 1E+2 | 1.049 x 103 | 0.0 | 5.3 | C |
| 10 | 22.2 | 0.0 | 77.8 | 1E+2 | 0 | 4.497 x 103 | 2.5 | 0.0 | B |
| 10 | 17.4 | 8.2 | 74.4 | 55.08 | 44.92 | 2.985 x 103 | 2.0 | 0.8 | B |
| 10 | 13.4 | 17.3 | 69.3 | 30.69 | 69.31 | 2.035 x 103 | 1.7 | 1.9 | B |
| 10 | 10.0 | 27.0 | 63.0 | 17.81 | 82.14 | 1.413 x 103 | 1.4 | 3.2 | B |
| 10 | 7.6 | 35.0 | 57.4 | 11.18 | 88.92 | 1.068 x 103 | 1.2 | 4.6 | B |
| 10 | 6.9 | 38.2 | 54.9 | 9.12 | 90.88 | 952 | 1.1 | 5.3 | B + C |
| 10 | 4.9 | 39.6 | 55.5 | 6.56 | 93.44 | 962 | 0.8 | 5.4 | C |
| 10 | 2.4 | 41.0 | 56.6 | 3.12 | 96.88 | 981 | 0.4 | 5.5 | C |
| 10 | 0.0 | 42.0 | 58.0 | 0 | 1E+2 | 1.015 x 103 | 0.0 | 5.5 | C |
| 20 | 26.0 | 0.0 | 74.0 | 1E+2 | 0 | 3.507 x 103 | 3.0 | 0.0 | B |
| 20 | 21.3 | 7.8 | 70.9 | 60.93 | 39.07 | 2.606 x 103 | 2.6 | 0.8 | B |
| 20 | 16.6 | 16.6 | 66.8 | 36.55 | 63.45 | 1.882 x 103 | 2.2 | 1.9 | B |
| 20 | 12.1 | 26.3 | 61.6 | 20.72 | 79.28 | 1.362 x 103 | 1.7 | 3.2 | B |
| 20 | 9.5 | 34.3 | 56.2 | 13.67 | 86.33 | 1.04 x 103 | 1.5 | 4.6 | B |
| 20 | 8.3 | 38.5 | 53.2 | 12.62 | 87.38 | 887 | 1.4 | 5.5 | B + C |
| 20 | 4.8 | 40.5 | 54.7 | 6.43 | 93.57 | 928 | 0.8 | 5.6 | C |
| 20 | 2.3 | 41.9 | 55.8 | 2.79 | 97.21 | 9.5E+2 | 0.4 | 5.7 | C |
| 20 | 0.0 | 42.9 | 57.1 | 0 | 1E+2 | 977 | 0.0 | 5.7 | C |
| 30 | 30.6 | 0.0 | 69.4 | 1E+2 | 0 | 2.896 x 103 | 3.8 | 0.0 | B |
| 30 | 25.2 | 7.4 | 67.4 | 66.06 | 33.94 | 2.268 x 103 | 3.2 | 0.8 | B |
| 30 | 20.1 | 16.1 | 63.8 | 41.83 | 58.17 | 1.702 x 103 | 2.7 | 1.9 | B |
| 30 | 15.4 | 25.4 | 59.2 | 25.37 | 74.78 | 1.268 x 103 | 2.3 | 3.2 | B |
| 30 | 12.0 | 33.2 | 54.8 | 17.17 | 82.83 | 1.004 x 103 | 1.9 | 4.6 | B |
| 30 | 10.2 | 38.4 | 51.4 | 13.39 | 86.61 | 849 | 1.7 | 5.7 | B + C |
| 30 | 7.2 | 40.2 | 52.6 | 9.26 | 90.74 | 871 | 1.2 | 5.8 | C |
| 30 | 4.7 | 41.8 | 53.5 | 5.95 | 94.05 | 884 | 0.8 | 5.9 | C |
| 30 | 2.3 | 43.1 | 54.6 | 2.70 | 97.30 | 9.1E+2 | 0.4 | 6.0 | C |
| 30 | 0.0 | 43.7 | 56.3 | 0 | 1E+2 | 946 | 0.0 | 5.9 | C |
(a) The composition unit is mol/100 mol of solute.
(b) The molalities were calculated by the compilers.
(c) The solid phases are: A = ice; B = NH4H2PO4; C = (NH4)2SO4.
