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Merck
CN

09980

Ammonium sulfate

puriss. p.a., ACS reagent, ≥99.5% (T)

Synonym(s):

Mascagnite

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About This Item

Linear Formula:
(NH4)2SO4
CAS Number:
Molecular Weight:
132.14
EC Number:
231-984-1
UNSPSC Code:
12352300
MDL number:
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InChI key

BFNBIHQBYMNNAN-UHFFFAOYSA-N

InChI

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

grade

ACS reagent, puriss. p.a.

assay

≥99.5% (T)

ign. residue

≤0.005% (as SO4)

pH

5.0-6.0 (25 °C, 50 mg/mL in H2O)

mp

>280 °C (dec.) (lit.)

density

1.77 g/mL at 25 °C (lit.)

anion traces

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

cation traces

As: ≤0.2 mg/kg, Ca: ≤10 mg/kg, Cd: ≤1 mg/kg, Co: ≤5 mg/kg, Cr: ≤5 mg/kg, Cu: ≤2 mg/kg, Fe: ≤2 mg/kg, K: ≤50 mg/kg, Mg: ≤5 mg/kg, Mn: ≤5 mg/kg, Na: ≤50 mg/kg, Ni: ≤5 mg/kg, Pb: ≤2 mg/kg, Zn: ≤1 mg/kg

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Storage Class

13 - Non Combustible Solids

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Eyeshields, Gloves, type N95 (US)

Regulatory Information

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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)
Neutron-Diffraction Study of the Structures of Ferroelectric and Paraelectric Ammonium Sulfate.
Schlemper EO, et al.
J. Chem. Phys. , 44(12), 4498-4509 (1966)
Separation of proteins by ammonium sulfate gradient solubilization.
T P King
Biochemistry, 11(3), 367-371 (1972-02-01)
Simon Gareth Broadley et al.
Acta crystallographica. Section D, Biological crystallography, 68(Pt 11), 1450-1459 (2012-10-24)
MshB, a zinc-based deacetylase, catalyses a step in the mycothiol biosynthetic pathway that involves the deacetylation of 1-O-(2-acetamido-2-deoxy-α-D-glucopyranosyl)-D-myo-inositol (GlcNAc-Ins), via cleavage of an amide bond, to 1-O-(2-amino-2-deoxy-α-D-glucopyranosyl)-D-myo-inositol (GlcN-Ins) and acetate. In this study, MshB was expressed, purified and crystallized. A

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