Ammonium sulfate

grade

ACS reagent
puriss. p.a.

Quality Level

200

Agency

USP/NF
reag. ISO
reag. Ph. Eur.

Assay

≥99%

form

crystals

impurities

≤0.005% in water insoluble matters
≤5 ppm heavy metals (by ICP-OES)

ign. residue

≤0.005% (as SO₄)

loss

≤0.1% loss on drying, 110 °C

pH

5-6 (25 °C, 5%)

mp

>280 °C (dec.) (lit.)

density

1.77 g/mL at 25 °C (lit.)

anion traces

chloride (Cl^-): ≤3 mg/kg
nitrate (NO₃^-): ≤10 mg/kg
phosphate (PO₄^3-): ≤5 mg/kg

cation traces

As: ≤0.2 mg/kg
Ca: ≤10 mg/kg
Cd: ≤1 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤2 mg/kg
Fe: ≤2 mg/kg
K: ≤50 mg/kg
Mg: ≤2 mg/kg
Mn: ≤5 mg/kg
Na: ≤20 mg/kg
Ni: ≤5 mg/kg
Pb: ≤2 mg/kg
Zn: ≤1 mg/kg

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