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:

J. Eysseltová

Methodology:

No information is given.

Sample Information:
  1. No information is given.
Measurement Errors:

Ambient temperature: No information is given. The compiler estimates the reproducibility to be about 0.1%.

System Components:
  1. Ammonia, $\ce{ NH3 }$; [7664-41-7] NIST WebBook
  2. Phosphoric acid, $\ce{ H3PO4 }$; [7664-38-2] NIST WebBook
  3. 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) ()
12.887.25.40a81.0b13.6b30.5b 23.360.65A + B
12.887.25.41a81.1b13.5b30.3b 23.461.05A + B
12.887.25.41a81.1b13.5b30.1b 23.661.46B
12.887.25.44a81.6b13.0b28.9b 24.664.01B
12.787.35.41a81.8b12.8b28.4b 24.865.13B
12.787.35.45a82.3b12.3b26.8b 26.369.02B + C
11.488.64.99a84.0b11.0b23.7b 26.778.05C
10.389.74.60a85.7b9.7b20.6b 27.889.80C
10.189.94.53a86.1b9.4b19.8b 28.393.42C
9.290.84.3a89.5b6.2b12.6b 40.5146.8C
8.991.14.3a92.3b3.5b6.8b 72.6272.0C
9.290.84.5a93.9b1.6b3.0b 170616.6C
9.290.84.5a94.0b1.5b2.8b 182660.6C
9.390.74.6a94.1b1.3b2.6b 198711.5C
9.190.94.5a94.3b1.2b2.4b 210770.7C
4.096.02.0a96.4b1.5b2.9b 76.5637.9C
4.096.02.0a96.2b1.8b3.3b 67.3560.5C
1.298.80.60a95.4b4.0b7.5b 8.9246.6C
0.0100.00.0a95.6b4.4b8.4b 0.0220.2C

(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.

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