Main page (Russian) Search in database (English)

Properties of substance:

ammonium sulfate

Group of substances:

inorganic

Physical appearance:

colorless rhombic crystals

Empirical formula (Hill's system for organic substances):

H8N2O4S

Structural formula as text:

(NH4)2SO4

Molar/atomic mass: 132.13

Decomposition temperature (°C):

218

Solubility (g/100 g of solvent):

acetic acid: sparingly soluble [Ref.]
acetone: insoluble [Ref.]
carbon disulphide: insoluble [Ref.]
diethyl ether: insoluble [Ref.]
ethanol: insoluble [Ref.]
ethyl acetate: insoluble [Ref.]
formic acid 95%: 25.4 (16.5°C) [Ref.]
methanol: insoluble [Ref.]
methyl acetate: insoluble [Ref.]
sulfur dioxide: 0.067 (0°C) [Ref.]
sulfuric acid: soluble [Ref.]
water: 70.1 (0°C) [Ref.]
water: 72.7 (10°C) [Ref.]
water: 75.4 (20°C) [Ref.]
water: 76.9 (25°C) [Ref.]
water: 78.1 (30°C) [Ref.]
water: 81.2 (40°C) [Ref.]
water: 84.3 (50°C) [Ref.]
water: 87.4 (60°C) [Ref.]
water: 94.1 (80°C) [Ref.]
water: 102 (100°C) [Ref.]

Multicomponent solubility (in wt%):

water 98.734%, ammonium sulfate 1.12%, calcium sulfate 0.146%, 25 °C, separating phase: CaSO4 * 2H2O [Ref.]
water 94.307%, ammonium sulfate 5.51%, calcium sulfate 0.183%, 25 °C, separating phase: CaSO4 * 2H2O [Ref.]
water 70.967%, ammonium sulfate 28.66%, calcium sulfate 0.373%, 25 °C, separating phase: CaSO4 * 2H2O [Ref.]
water 64.764%, ammonium sulfate 34.85%, calcium sulfate 0.386%, 25 °C, separating phase: CaSO4 * 2H2O + (NH4)2SO4 * CaSO4 * H2O [Ref.]
water 63.02%, ammonium sulfate 36.67%, calcium sulfate 0.31%, 25 °C, separating phase: (NH4)2SO4 * CaSO4 * H2O [Ref.]
water 59.1%, ammonium sulfate 40.7%, calcium sulfate 0.2%, 25 °C, separating phase: (NH4)2SO4 * CaSO4 * H2O [Ref.]
water 51.3%, IPA 45.58%, ammonium sulfate 3.12%, 25 °C [Ref.]
water 71.7%, IPA 14.2%, ammonium sulfate 14.1%, 25 °C [Ref.]
water 57.53%, IPA 0.97%, ammonium sulfate 41.5%, 25 °C [Ref.]

Properties of solutions:

10% (wt.), solvent - water
  Dynamic viscosity (mPa·s) = 1.168 (20°)
  Density (g/cm3) = 1.0574 (20°)
  Index of refraction = 1.3492 (20°)
  Freezing point (°C) = -2.89
42,6% (wt.), solvent - water
  Density (g/cm3) = 1.248 (20°)

Numerical data:

Critical relative humidity (%): 79.2

Density:

1.77 (20°C, g/cm3)

Reactions:

  1. [Ref.1aster]
    (NH4)2SO4 + 3Cl2 → NCl3 + NH4HSO4 + 3HCl

Refractive index (nD):

1.521 (20°C)

Standard molar enthalpy (heat) of formation ΔfH (298 K, kJ/mol)

-1180.9 (s) [Ref.]

Standard molar Gibbs energy of formation ΔfG (298 K, kJ/mol)

-901.7 (s) [Ref.]

Standard molar entropy S (298 K, J/(mol·K))

220.1 (s) [Ref.]

Molar heat capacity at constant pressure Cp (298 K, J/(mol·K))

187.5 (s) [Ref.]

LD50 (mg/kg):

4540 (rats, oral)
4280 (mice, oral)

References:

  1. Industrial and Engineering Chemistry Process Design and Development. - 1970. - Vol. 9, No. 4. - pp. 489-494
  2. Lewis R.J. Sax's Dangerous Properties of Industrial Materials. - 11ed. - Wiley-interscience, 2004. - pp. 242
  3. Milne G.W.A. Gardner's Commercially Important Chemicals. - Wiley-Interscience, 2005. - pp. 36
  4. Patnaik P. Handbook of inorganic chemicals. - McGraw-Hill, 2003. - pp. 43-45
  5. Seidell A. Solubilities of inorganic and metal organic compounds. - 3ed., vol.1. - New York: D. Van Nostrand Company, 1940. - pp. 1122-1132
  6. Позин М.Е. Технология минеральных солей (удобрений, пестицидов, промышленных солей, окислов и кислот). - Ч.2. - Л.: Химия, 1974. - pp. 1237-1253 [Russian]
  7. Рабинович В.А., Хавин З.Я. Краткий химический справочник. - Л.: Химия, 1977. - pp. 54 [Russian]
  8. Справочник азотчика. - М.: Химия, 1987. - pp. 228-234 [Russian]
  9. Справочник по растворимости. - Т.1, Кн.1. - М.-Л.: ИАН СССР, 1961. - pp. 219-220 [Russian]
  10. Химическая энциклопедия. - Т. 1. - М.: Советская энциклопедия, 1988. - pp. 154 [Russian]

    What information do you need?




    © Collected Ruslan Anatolievich Kiper, burewestnik@mail.ru