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. (Molecular Biology Grade)
State of matter
Solid
Solubility (20°C)
760 g/L (H2O)
Melting point
280°C (dec.)
Formula
(NH4)2SO4
M
132.14 g/mol
CAS-No.:
7783-20-2
HS-No.:
31022100
EC-No.:
231-984-1
Storage:
RT
LGK:
10 - 13
Disposal:
14
WGK:
1
Specification
DNases/RNases/Proteases
not detectable
Assay (titr.)
min. 99.5 %
pH (5 %; H2O; 20°C)
5.0 - 6.0
Chloride
max. 0.001 %
Nitrate
max. 0.001 %
Phosphate
max. 0.0005 %
As
max. 0.0001 %
Ca
max. 0.001 %
Cu
max. 0.0005 %
Fe
max. 0.0005 %
K
max. 0.002 %
Mg
max. 0.0005 %
Na
max. 0.002 %
Pb
max. 0.0005 %
Zn
max. 0.0002 %
Stability tests / Quality control / Comparison
Ammonium sulfate
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. (Molecular Biology Grade)