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A4915

Sigma-Aldrich

Ammonium sulfate

ACS reagent, ≥99.0%

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.21

grade

ACS reagent

Quality Level

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
901229A2939204501
Ammonium sulfate ACS reagent, ≥99.0%

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

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Ammonium sulfate

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Ammonium sulfate

Ammonium sulfate 99.999% trace metals basis

Sigma-Aldrich

204501

Ammonium sulfate

assay

≥99.0%

assay

≥99.0%

assay

≥99.0%

assay

99.999% trace metals basis

form

powder or crystals

form

powder or crystals

form

powder or crystals

form

crystals and lumps

impurities

≤0.005% Insoluble matter

impurities

≤0.005% Insoluble matter

impurities

Insoluble matter, passes filter test

impurities

≤15.0 ppm Trace Metal Analysis

pH

5.0-6.0 (25 °C, 5%)

pH

5.0-6.0 (25 °C, 5%)

pH

5.0-6.0 (20 °C, 1 M in H2O)

pH

5.0-6 (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.

Storage Class Code

13 - Non Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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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The 1-by-3 tandem differential mobility analyzer for measurement of the irreversibility of the hygroscopic growth factor.
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Industrial catalytic aspects of the synthesis of monomers for nylon production.
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