Sodium Nitrate (Reag. USP, Ph. Eur.) for analysis, ACS, ISO

Sodium Nitrate (Reag. USP, Ph. Eur.) for analysis, ACS, ISO
Content: 25 KGM
Physical Description:
solid
Quality Name: for analysis, ACS, ISO
Specification: Minimum assay: 99.0%
pH of 5% solution: 5.5-8.0

?maximum limit of impurities:
Insoluble matter in H2O: 0.003 %
Chloride (Cl): 0.001%
Ammonium (NH4): 0.001%
Phosphate (PO4): 0.0005 %
Sulfate (SO4): 0.002%
Nitrite (NO2): 0.001%
Iodate (IO3): 0.0005%
Heavy Metals (ICP-OES): 0.0005%
As: 0.00004 %
Ca: 0.005 %
Cd: 0.0002 %
Co: 0.0002 %
Cu: 0.0002 %
Fe: 0.0002 %
K: 0.005 %
Mg: 0.001 %
Mn: 0.0002 %
Ni: 0.0005 %
Pb: 0.0005 %
Zn: 0.0005 %