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204501

Sigma-Aldrich

Ammonium sulfate

99.999% trace metals basis

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Synonym(s):
Mascagnite
Linear Formula:
(NH4)2SO4
CAS Number:
Molecular Weight:
132.14
EC Number:
MDL number:
eCl@ss:
38030408
PubChem Substance ID:
NACRES:
NA.23

Quality Level

assay

99.999% trace metals basis

form

crystals and lumps

technique(s)

HPLC: suitable

impurities

≤15.0 ppm Trace Metal Analysis

pH

5.0-6 (25 °C, 132 g/L)

mp

>280 °C (dec.) (lit.)

solubility

acetone: insoluble(lit.)
ethanol: insoluble(lit.)

density

1.77 g/mL at 25 °C (lit.)

SMILES string

N.N.OS(O)(=O)=O

InChI

1S/2H3N.H2O4S/c;;1-5(2,3)4/h2*1H3;(H2,1,2,3,4)

InChI key

BFNBIHQBYMNNAN-UHFFFAOYSA-N

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General description

Ammonium sulfate is a less corrosive sulfating agent that is used to synthesize the highly efficient acid catalyst for biodiesel production.

It can also be used to enhance the stability of perovskite solar cells. The incorporation of sulfate species minimizes chemical degradation at the perovskite/ETL interface. It is insoluble in acetone, alcohol and ether.

Application

Ammonium sulfate can be used:
  • As a structure-directing agent (SDA) to prepare hexagonal WO3 nanorod thin films for high-performance energy storage devices. The addition of (NH4)2SO4 prevents agglomeration of crystals.
  • As an electrolyte for aqueous ammonium dual-ion batteries and MnO2/carbon supercapacitors.
  • As a blowing agent to prepare porous carbon structures for supercapacitors. These porous materials show high capacitance and long-term stability.
  • To enhance the stability of perovskite solar cells. The incorporation of sulfate species minimizes chemical degradation at the perovskite/ETL interface.

Storage Class

11 - Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)


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