About Ammonium Sulfates

Ammonium Sulfate Formula Diagram (NH4)2SO4

Ammonium Sulfates are double salts in the class of alums, compounds which contain a monovalent cation such as ammonium and a multivalent metal ion such as aluminum. Many alums occur in various hydrated forms as various rare minerals, but they are generally produced synthetically for commercial use. Many alums have common names: ammonium aluminum sulfate is often referred to as ammonium alum or just alum, ammonium iron(III) sulfate is sometimes known as iron alum, and ammonium iron(II) sulfate is known as Mohr’s salt.

Ammonium alum is an inexpensive and nontoxic chemical with many niche applications, including in water purification, vegetable glues, porcelain cements, deodorants, and textile finishing applications. Iron alum finds similar uses as aluminum alum, and additionally has been used as an etching agent and a reagent in organic synthesis. Mohr’s salt acquired its name from the German chemist Karl Friedrich Mohr, who worked extensively with the salt in his work improving the methodology of titration in the 19th century, and it remains a common chemical laboratory reagent.

Recent Research & Development for Ammonium Sulfates

Separation and Enrichment of Lectin from Zihua Snap-Bean (Phaseolus vulgaris) Seeds by PEG 600-Ammonium Sulfate Aqueous Two-Phase System., Jiang, Bin, Yuan Yongqiang, Zhang Xiaoqing, Feng Zhibiao, and Liu Chunhong , Molecules, 2017 Sep 22, Volume 22, Issue 10, (2017)

Reactive Uptake of Dimethylamine by Ammonium Sulfate and Ammonium Sulfate-Sucrose Mixed Particles., Chu, Yangxi, and Chan Chak K. , J Phys Chem A, 2017 Jan 12, Volume 121, Issue 1, p.206-215, (2017)

Kinetically Determined Hygroscopicity and Efflorescence of Sucrose-Ammonium Sulfate Aerosol Droplets under Lower Relative Humidity., Wang, Lin-Na, Cai Chen, and Zhang Yun-Hong , J Phys Chem B, 2017 09 14, Volume 121, Issue 36, p.8551-8557, (2017)

Large electrocaloric effects in single-crystal ammonium sulfate., Crossley, S, Li W, Moya X, and Mathur N D. , Philos Trans A Math Phys Eng Sci, 2016 Aug 13, Volume 374, Issue 2074, (2016)

Ammonium Sulfate Improves Detection of Hydrophilic Quaternary Ammonium Compounds through Decreased Ion Suppression in Matrix-Assisted Laser Desorption/Ionization Imaging Mass Spectrometry., Sugiyama, Eiji, Masaki Noritaka, Matsushita Shoko, and Setou Mitsutoshi , Anal Chem, 2015 Nov 17, Volume 87, Issue 22, p.11176-81, (2015)

Revealing Brown Carbon Chromophores Produced in Reactions of Methylglyoxal with Ammonium Sulfate., Lin, Peng, Laskin Julia, Nizkorodov Sergey A., and Laskin Alexander , Environ Sci Technol, 2015 Dec 15, Volume 49, Issue 24, p.14257-66, (2015)