SDS Volume
Volume 66. Ammonium Phosphates, p None
Source Publication
Flatt, R.; Brunisholz, G.; Chapuis-Gottreux, S.; Helv. Chim. Acta 1951, 34, 683.
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.
Mass concentration (m/v) (1): No information is given.
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 | 100w3 | 100w4 | 100w5 | $x_{5}$ | m3 (mol/kg) b | m4 (mol/kg) b | Phase (s) () c |
|---|---|---|---|---|---|---|---|---|
| 8.96 | 91.04 | 4.34b | 92.94b | 2.72b | 5.30a | 93.82 | 349.0 | A |
| 9.31 | 90.69 | 4.31 | 88.83 | 6.86 | 14.00 | 36.90 | 132.1 | A |
| 10.56 | 89.44 | 4.69 | 85.16 | 10.15 | 21.60 | 27.13 | 85.64 | A |
| 10.83 | 89.17 | 4.80 | 84.98 | 10.22 | 21.80 | 27.57 | 84.85 | A |
| 11.11 | 88.89 | 4.86 | 83.97 | 11.16 | 24.10 | 25.58 | 76.76 | B + C |
| 12.72 | 87.28 | 5.44 | 81.99 | 12.57 | 27.80 | 25.39 | 66.54 | C |
| 12.95 | 87.05 | 5.32 | 78.81 | 15.87 | 36.50 | 19.69 | 50.68 | C |
| 13.10 | 86.90 | 5.37 | 78.59 | 16.04 | 37.00 | 19.65 | 49.99 | C |
| 14.01 | 85.99 | 4.64 | 63.49 | 31.87 | 91.00 | 8.54 | 20.33 | C |
| 14.24 | 85.76 | 4.66 | 62.78 | 32.56 | 94.00 | 8.41 | 19.68 | C |
| 17.08 | 82.92 | 4.48 | 50.30 | 45.22 | 163.0 | 5.81 | 11.35 | C |
| 20.76 | 79.24 | 4.39 | 40.56 | 55.05 | 246.0 | 4.68 | 7.52 | C |
| 25.07 | 74.93 | 4.28 | 32.72 | 63.00 | 349.0 | 3.99 | 5.30 | C |
| 30.33 | 69.67 | 4.20 | 26.54 | 69.26 | 473.0 | 3.56 | 3.91 | C |
| 32.60 | 67.40 | 4.25 | 25.04 | 70.71 | 512.0 | 3.53 | 3.61 | C |
| 34.97 | 65.03 | 4.71 | 25.85 | 69.44 | 487.0 | 3.98 | 3.80 | C |
| 37.30 | 62.70 | 5.53 | 28.43 | 66.04 | 421.0 | 4.92 | 4.39 | C |
| 40.70 | 59.30 | 6.81 | 32.10 | 61.09 | 345.0 | 6.55 | 5.36 | C |
| 47.38d | 50.62d | 10.27 | 41.57 | 48.16 | 210.0 | 12.52 | 8.81 | C |
| 49.80 | 50.20 | 12.44 | 47.91 | 39.65 | 150.0 | 18.42 | 12.33 | C + D |
| 58.63 | 41.37 | 11.11 | 36.35 | 52.54 | 262.0 | 12.42 | 7.06 | D |
| 65.57 | 34.43 | 10.62 | 31.08 | 58.29 | 340.0 | 10.70 | 5.44 | D |
| 68.23 | 31.77 | 10.86 | 30.53 | 58.61 | 348.0 | 10.88 | 5.32 | D + E |
| 68.01 | 31.99 | 10.74 | 30.29 | 58.98 | 353.0 | 10.69 | 5.24 | E |
| 68.95 | 31.05 | 10.14 | 28.22 | 61.64 | 396.0 | 9.66 | 4.67 | E |
| 69.81 | 30.19 | 8.59 | 23.60 | 67.82 | 521.0 | 7.44 | 3.55 | E |
| 100.0 | 0.00 | 5.01 | 9.61 | 85.38 | 1.61 x 103 | 3.45 | 1.15 | E |
(a) The composition unit is; mol/100 mol solute.
(b) These values were calculated by the compiler.
(c) The solid phases are: A = (NH4)H3(PO4)2(?); B = (NH4)3H9(PO4)4; C = NH4H2PO4; D = (NH4)2HPO4; E = (NH4)3PO4.
(d) COMPILER'S COMMENT: The mol % data for this solution appear to be incorrect.
