SDS Volume
Volume 66. Ammonium Phosphates, p None
Source Publication
Flatt, R.; Brunisholz, G.; Blumer, O.; Helv. Chim. Acta 1955, 38, 753.
Conditions:
Room Temp: Composition at 25 °C
Compiler:
Methodology:
No information is given.
Sample Information:
- No information is given.
Measurement Errors:
Ambient temperature: No information is given. The compiler estimates the reproducibility to be about 0.1%.
System Components:
- Ammonia, $\ce{ NH3 }$; [7664-41-7] NIST WebBook
- Phosphoric acid, $\ce{ H3PO4 }$; [7664-38-2] NIST WebBook
- Water, $\ce{ H2O }$; [7732-18-5] NIST WebBook
Experimental Data
| 100w1 | 100w2 | $100 x_{3}$ | 100w1 | 100w2 | 100w3 | m1 (mol/kg) | m2 (mol/kg) | Phase (s) () |
|---|---|---|---|---|---|---|---|---|
| 12.8 | 87.2 | 5.40a | 81.0b | 13.6b | 30.5b | 23.3 | 60.65 | A + B |
| 12.8 | 87.2 | 5.41a | 81.1b | 13.5b | 30.3b | 23.4 | 61.05 | A + B |
| 12.8 | 87.2 | 5.41a | 81.1b | 13.5b | 30.1b | 23.6 | 61.46 | B |
| 12.8 | 87.2 | 5.44a | 81.6b | 13.0b | 28.9b | 24.6 | 64.01 | B |
| 12.7 | 87.3 | 5.41a | 81.8b | 12.8b | 28.4b | 24.8 | 65.13 | B |
| 12.7 | 87.3 | 5.45a | 82.3b | 12.3b | 26.8b | 26.3 | 69.02 | B + C |
| 11.4 | 88.6 | 4.99a | 84.0b | 11.0b | 23.7b | 26.7 | 78.05 | C |
| 10.3 | 89.7 | 4.60a | 85.7b | 9.7b | 20.6b | 27.8 | 89.80 | C |
| 10.1 | 89.9 | 4.53a | 86.1b | 9.4b | 19.8b | 28.3 | 93.42 | C |
| 9.2 | 90.8 | 4.3a | 89.5b | 6.2b | 12.6b | 40.5 | 146.8 | C |
| 8.9 | 91.1 | 4.3a | 92.3b | 3.5b | 6.8b | 72.6 | 272.0 | C |
| 9.2 | 90.8 | 4.5a | 93.9b | 1.6b | 3.0b | 170 | 616.6 | C |
| 9.2 | 90.8 | 4.5a | 94.0b | 1.5b | 2.8b | 182 | 660.6 | C |
| 9.3 | 90.7 | 4.6a | 94.1b | 1.3b | 2.6b | 198 | 711.5 | C |
| 9.1 | 90.9 | 4.5a | 94.3b | 1.2b | 2.4b | 210 | 770.7 | C |
| 4.0 | 96.0 | 2.0a | 96.4b | 1.5b | 2.9b | 76.5 | 637.9 | C |
| 4.0 | 96.0 | 2.0a | 96.2b | 1.8b | 3.3b | 67.3 | 560.5 | C |
| 1.2 | 98.8 | 0.60a | 95.4b | 4.0b | 7.5b | 8.9 | 246.6 | C |
| 0.0 | 100.0 | 0.0a | 95.6b | 4.4b | 8.4b | 0.0 | 220.2 | C |
(a) The composition unit is mol/100 mol solute.
(b) These values were calculated by the compiler.
(c) The solid phases are: A = NH4H2PO4; B = (NH4)3H9(PO4)4; C = NH4H5(PO4)2; D = H3PO4.


