A4418

Ammonium sulfate

for molecular biology, ≥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
• eCl@ss: 38030408
• PubChem Substance ID: 24890861
• NACRES: NA.31

Properties

• Quality Level: 200
• grade: for molecular biology
• assay: ≥99.0%
• form: powder
• impurities: ≤0.005% Insolubles
• pH: 5.0-6 (25 °C, 132 g/L)
• mp: >280 °C (dec.) (lit.)
• solubility: H₂O: 0.667 g/mL
• density: 1.77 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤5 ppm
• cation traces: Cu: ≤5 ppm; Fe: ≤5 ppm; Zn: ≤5 ppm; heavy metals (as Pb): ≤2 ppm
• absorption: ≤0.025 at 280 at 1 M; ≤0.03 at 260 at 1 M
• foreign activity: DNase, RNase, and protease, none detected
• 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 commonly used in agriculture as a nitrogen fertilizer. In aqueous solution, it dissociates to form ammonium and sulfate ions.

Packaging

1 kg in poly bottle

100, 500 g in poly bottle

5 kg in poly drum

Application

Ammonium sulfate has been used in the preparation of ′Blue Silver′ colloidal Coomassie stain for proteins.
Ammonium sulfate may be used for the precipitation or fractionation of proteins or for purification of antibodies. It is also useful for crystallographic analysis of nucleic acids and proteins.

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves
• EU REACH Annex XVII (Restriction List): CAS No.7783-20-2