Synonyms: Ammonium sulphate
(NH₄)₂SO₄
H₈N₂O₄S
M_r 132.14
CAS Number [7783-20-2]
EC Number 231-984-1
Merck 14,555
RTECS BS4500000
MDL Number MFCD00003391
PubChem Substance ID 24846507
Purity ≥ 99.5%

Measured pH Range: 4.0 – 5.4 at 25°C
Measured Conductivity Range: 313.2 – 464.2 mS/cm at 25°C
Measured Refractive Index Range: 1.39101 – 1.39496 at 20°C

Al  ≤0.0005%
As ≤0.00002%
Ba ≤0.0005%
Bi  ≤0.0005%
Ca ≤0.001%
Cd ≤0.0001%
Cl  ≤0.0005%
Co ≤0.0005%
Cr ≤0.0005%
Cu ≤0.0002%
Fe  ≤0.0002%
K   ≤0.005%
Li   ≤0.0005%
Mg ≤0.0005%
Mn ≤0.0005%
Mo ≤0.0005%
Na ≤0.005%
Ni  ≤0.0005%
NO₃ ≤0.001%
Pb   ≤0.0002%
PO₄ ≤0.0005%
Sr  ≤0.0005%
Zn ≤0.0001%

3.5 M Ammonium sulfate

1. Crystallization and preliminary X-ray diffraction analysis of the beta-chain of a T-cell antigen receptor. Boulot, G; Bentley, GA; Karjalainen, K; Mariuzza, RA. J Mol Biol 235, 795- 797, 1994.

2. Crystallization and preliminary X-ray analysis of the atrial natriuretic peptide (ANP) receptor extracellular domain complex with ANP: use of ammonium sulfate as the cryosalt. Kunio S. Misono et al. Acta Cryst. (2003). D59, 1831-1833.

3. Crystal structures of IRAK-4 kinase in complex with inhibitors: A serine/threonine kinase with tyrosine as a gatekeeper. Zhulun Wang et al. Structure 14, 1835-1844, December 2006.

Hampton Research, first in crystallization since 1991, developing and delivering crystallization and optimization screens, reagents, plates, and other tools for the crystallization of biological macromolecules, including proteins (antibody), peptides (insulin), and nucleic acids (DNA).

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