ChemicalBook CAS DataBase List Sodium sulfate

Sodium sulfate synthesis

4synthesis methods

Product Name:Sodium sulfate
CAS Number:7757-82-6
Molecular formula:Na2SO4
Molecular Weight:142.0421

Sodium sulfate is mined from its natural mineral deposits and subjected to purification.
Sodium sulfate is synthesized by the Mannheim process or Hargreaves process. Manheim’s process is based on Glauber’s reaction between sulfuric acid and sodium chloride: 2NaCl + H₂SO₄ → Na₂SO₄ + 2HCl↑
The process was devised by Johann Glauber to produce hydrochloric acid. Sodium sulfate is isolated from the solution by fractional crystallization.
Hargreaves’ process also was developed to produce hydrochloric acid. It is a variation of Mannheim’s method. In this method, sulfur dioxide is used instead of sulfuric acid. The reaction is as follows: 4NaCl + 2SO₂ + O₂ + 2H₂O → 2Na₂SO₄ + 4HCl↑
Sodium sulfate also is obtained as a byproduct of manufacturing phenol by caustic fusion.

151-21-3 Synthesis

151-21-3
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7757-82-6
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Yield:-

Reaction Conditions:

with AgNO₃ or NaNO₃;SnCl₂*2H₂O;cetyltrimethylammonium bromide in N,N-dimethyl-formamide;refluxing a mixt. of dodecylsodium sulfate, nitrate, SnCl2*2H2O, cetyltrimethylammonium bromide in DMF at 160°C for 60 min, cooling to room temp.; centrifugation, washing with 2-propanol;

References:

Pu, Ying-Chih;Hwu, Jih Ru;Su, Wu-Chou;Shieh, Dar-Bin;Tzeng, Yonhua;Yeh, Chen-Sheng [Journal of the American Chemical Society,2006,vol. 128,# 35,p. 11606 - 11611]