Sodium Sulfate anhydrous (Reag. USP) for analysis, ACS, ISO

Sodium Sulfate anhydrous (Reag. USP) for analysis, ACS, ISO
Content: 25 KGM
Physical Description:
solid
Quality Name: for analysis, ACS, ISO
Specification: Minimum assay: 99.0%
Identity: passes test
pH of 5% solution: 5.2-8

?maximum limit of impurities:
Insoluble matter in H2O: 0.005 %
Loss on ignition 800°C: 0.5 %
Chloride (Cl): 0.001%
Nitrogen compounds (as N): 0.0005%
Phosphate (PO4): 0.001 %
As: 0.0001 %
Heavy metals (as Pb): 0.0005%

Metals by ICP [in mg/Kg (ppm)]:
Ag: 5
Al: 5
Au: 5
B: 5
Ba: 5
Be: 5
Bi: 5
Ca: 50
Cd: 5
Co: 5
Cr: 10
Cu: 5
Fe: 5
Ga: 5
In: 5
K: 20
Mg: 10
Mn: 5
Mo: 5
Ni: 5
Pb: 5
Pt: 5
Sb: 5
Se: 5
Si: 5
Sr: 5
Ti: 5
V: 5
Zr: 5