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901229

Sigma-Aldrich

Ammonium sulfate

anhydrous, free-flowing, Redi-Dri, ACS reagent, ≥99.0%

Synonym(s):
Mascagnite
Linear Formula:
(NH4)2SO4
CAS Number:
Molecular Weight:
132.14
EC Number:
MDL number:
NACRES:
NA.21

grade

ACS reagent
anhydrous

Quality Level

product line

Redi-Dri

Assay

≥99.0%

form

powder or crystals

impurities

≤0.005% Insoluble matter

ign. residue

≤0.005%

pH

5.0-6.0 (25 °C, 5%)

mp

>280 °C (dec.) (lit.)

solubility

water: soluble 132 g/L at 20 °C

density

1.77 g/mL at 25 °C (lit.)

anion traces

chloride (Cl-): ≤5 ppm
nitrate (NO3-): ≤0.001%
phosphate (PO43-): ≤5 ppm

cation traces

Fe: ≤5 ppm
heavy metals: ≤5 ppm (by ICP-OES)

storage temp.

room temp

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
A5132A4915901874
Ammonium sulfate anhydrous, free-flowing, Redi-Dri™, ACS reagent, ≥99.0%

Sigma-Aldrich

901229

Ammonium sulfate

Ammonium sulfate ReagentPlus®, ≥99.0%

Sigma-Aldrich

A5132

Ammonium sulfate

Ammonium sulfate ACS reagent, ≥99.0%

Sigma-Aldrich

A4915

Ammonium sulfate

Ammonium sulfate anhydrous, Redi-Dri™, ReagentPlus®, ≥99.0%

Sigma-Aldrich

901874

Ammonium sulfate

assay

≥99.0%

assay

≥99.0%

assay

≥99.0%

assay

≥99.0%

form

powder or crystals

form

powder or crystals

form

powder or crystals

form

powder

impurities

≤0.005% Insoluble matter

impurities

-

impurities

≤0.005% Insoluble matter

impurities

-

pH

5.0-6.0 (25 °C, 5%)

pH

5-6 (25 °C, 132 g/L)

pH

5.0-6.0 (25 °C, 5%)

pH

5-6 (25 °C, 132 g/L)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

mp

>280 °C (dec.) (lit.)

General description

Ammonium sulfate is an ammonium salt commonly used as fertilizer. It can be synthesized by neutralizing sulfuric acid with ammonia. It can enhance the phytotoxicity of several herbicides like glyphosates. Ammonium sulfate is formed as a co-product during the manufacture of caprolactam, a precursor of nylon.

Application

Ammonium sulfate was used in methyl cellulose precipitable tannin assay to evaluate wine tannin in finished wine samples. It was also used in making externally mixed aerosols for analyzing the 1 × 3 tandem differential mobility analyzer (1 × 3-TDMA), which is mainly employed for determining the irreversibility of the hygroscopic growth factor of aerosol particles.

Legal Information

Redi-Dri is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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The 1-by-3 tandem differential mobility analyzer for measurement of the irreversibility of the hygroscopic growth factor.
Rosenoern T, et al.
Aerosol Science and Technology, 43(7), 641-652 (2009)
Influence of yeast strain on Shiraz wine quality indicators.
Holt H, et al.
International Journal of Food Microbiology, 165(3), 302-311 (2013)
Industrial catalytic aspects of the synthesis of monomers for nylon production.
Bellussi G and Perego C.
CATTECH, 4(1), 4-16 (2000)
Ammonium Compounds.
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