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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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This Item
A5132A2939901229
Ammonium sulfate 99.999% trace metals basis

Sigma-Aldrich

204501

Ammonium sulfate

-
Ammonium sulfate ReagentPlus®, ≥99.0%

Sigma-Aldrich

A5132

Ammonium sulfate

-
Ammonium sulfate BioXtra, ≥99.0%

Sigma-Aldrich

A2939

Ammonium sulfate

Premium Grade
Ammonium sulfate anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99.0%

Sigma-Aldrich

901229

Ammonium sulfate

-
form

crystals and lumps

form

powder or crystals

form

powder or crystals

form

powder or crystals

impurities

≤15.0 ppm Trace Metal Analysis

impurities

-

impurities

Insoluble matter, passes filter test

impurities

≤0.005% Insoluble matter

pH

5.0-6 (25 °C, 132 g/L)

pH

5-6 (25 °C, 132 g/L)

pH

5.0-6.0 (20 °C, 1 M in H2O)

pH

5.0-6.0 (25 °C, 5%)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

solubility

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

solubility

water: soluble 132 g/L at 20 °C

solubility

H2O: 1 M, clear, colorless

solubility

water: soluble 132 g/L at 20 °C

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 Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

EU REACH Annex XVII (Restriction List)

CAS No.

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Ammonium sulfate treatment at the TiO2/perovskite interface boosts operational stability of perovskite solar cells
Bening Tirta Muhammad, et al.
Journal of Materials Chemistry, 9, 14334-14341 (2021)
Facile synthesis of self-assembled WO3 nanorods for high-performance electrochemical capacitor
Pragati A. Shinde, et al.
Journal of alloys and compounds, 770, 1130-1137 (2019)
A novel aqueous ammonium dual-ion battery based on organic polymers
Yadi Zhang, et al.
Journal of Materials Chemistry, 7, 11314-11320 (2019)
N, S co-doped porous graphene-like carbon synthesized by a facile coal tar pitch-blowing strategy for high-performance supercapacitors
Gang Li, et al.
Chemical Physics Letters, 827, 140712-140712 (2023)
Low temperature water based electrolytes for MnO 2/carbon supercapacitors
Alexander J Roberts, et al.
Physical Chemistry Chemical Physics, 15, 3518-3526 (2013)

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