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31119-M

Sigma-Aldrich

Ammonium sulfate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99%

Synonym(s):

Mascagnite

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About This Item

Linear Formula:
(NH4)2SO4
CAS Number:
Molecular Weight:
132.14
EC Number:
MDL number:
UNSPSC Code:
12352314
eCl@ss:
38030408
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent
puriss. p.a.

Quality Level

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

Assay

≥99%

form

crystalline

impurities

≤0.005% in water insoluble matters
≤5 ppm heavy metals (by ICP-OES)

ign. residue

≤0.005% (as SO4)

loss

≤0.1% loss on drying, 110 °C

pH

5-6 (25 °C, 5%)

mp

>280 °C (dec.) (lit.)

density

1.77 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤3 mg/kg
nitrate (NO3-): ≤10 mg/kg
phosphate (PO43-): ≤5 mg/kg

cation traces

As: ≤0.00002%
Ca: ≤0.001%
Cd: ≤0.0001%
Co: ≤0.0005%
Cr: ≤0.0005%
Cu: ≤0.0002%
Fe: ≤2 mg/kg
K: ≤0.005%
Mg: ≤0.0002%
Mn: ≤0.0005%
Na: ≤0.002%
Ni: ≤0.0005%
Pb: ≤0.0002%
Zn: ≤0.0001%

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 an inorganic salt that can be produced from the direct neutralization of sulfuric acid with ammonia.

Application

Ammonium sulfate can be used as a nucleating agent in the preparation of fatty acid microcapsules.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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Microencapsulation of a fatty acid with Poly (melamine-urea-formaldehyde
Konuklu Y, et al.
Energy Conversion and Management , 80, 382-390 (2014)
Ammonium compounds
Kirk-Othmer Encyclopedia of Chemical Technology (2000)
Separation of proteins by ammonium sulfate gradient solubilization.
T P King
Biochemistry, 11(3), 367-371 (1972-02-01)
D A DePasquale et al.
Applied and environmental microbiology, 56(12), 3711-3717 (1990-12-01)
In this study we examined the mechanism by which ammonium bicarbonate inhibits mycotoxigenic fungi. Elevated extracellular pH, alone, was not responsible for the antifungal activity. Although conidia of Penicillium griseofulvum and Fusarium graminearum had internal pH (pHi) values as high
Deliquescence and crystallization of ammonium sulfate particles internally mixed with water-soluble organic compounds
Parsons MT, et al.
The Journal of Physical Chemistry A, 108(52), 11600-11608 (2004)

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