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901229

Sigma-Aldrich

Ammonium sulfate

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

Synonym(s):

Mascagnite

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About This Item

Linear Formula:
(NH4)2SO4
CAS Number:
7783-20-2
Molecular Weight:
132.14
EC Number:
231-984-1
MDL number:
MFCD00003391
UNSPSC Code:
12352314
NACRES:
NA.21

grade

ACS reagent
anhydrous

Quality Level

100

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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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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Industrial catalytic aspects of the synthesis of monomers for nylon production.
Bellussi G and Perego C.
CATTECH, 4(1), 4-16 (2000)
Influence of yeast strain on Shiraz wine quality indicators.
Holt H, et al.
International Journal of Food Microbiology, 165(3), 302-311 (2013)
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)
Ammonium Compounds.
Weston CW, et al.
Kirk-Othmer Encyclopedia of Chemical Technology (2003)
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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Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

Redi-Dri™ – The World of Free-flowing Hygroscopic Products

Redi-Dri™ prevents hygroscopic powders, such as inorganic salts, from absorbing moisture and forming clumps, leaving the salts free-flowing every time.

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