A4915

Ammonium sulfate

ACS reagent, ≥99.0%

• Synonym(s): Mascagnite
• Linear Formula: (NH₄)₂SO₄
• CAS Number: 7783-20-2
• Molecular Weight: 132.14
• EC Number: 231-984-1
• MDL number: MFCD00003391
• UNSPSC Code: 12352300
• eCl@ss: 38030408
• PubChem Substance ID: 329770862
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• 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 (PO₄^3-): ≤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

Description

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.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable