Merck Ammonium sulfate

Grade:  ACS reagent

Quality Level:  300

Agency:  reag. ISO

              reag. Ph. Eur.

vapor pressure:  <1 Pa ( 25 °C)

product line:  EMSURE®

Assay:  ≥99.5% (alkalimetric)

Form:  solid

Potency:  2840 mg/kg LD50, oral (Rat)

Impurities:  ≤0.001% Insoluble matter

ign. Residue:  ≤0.005% (as sulfate)

loss:  ≤0.1% loss on drying, 105 °C

pH:  5 (100 g/L in H2O)

mp:  >280 °C (dec.) (lit.)

solubility:  754-764 g/L

density:  1.77 g/mL at 25 °C (lit.)

bulk density:  850 kg/m3

anion traces:

chloride (Cl-): ≤0.0003%

nitrate (NO3-): ≤0.001%

phosphate (PO43-): ≤0.0005%

cation traces:

Al: ≤0.000075%

As: ≤0.00002%

Ca: ≤0.001%

Cd: ≤0.0001%

Cr: ≤0.000075%

Cu: ≤0.0002%

Fe: ≤0.0002%

Mg: ≤0.0005%

Pb: ≤0.0002%

Zn: ≤0.0001%

heavy metals: ≤0.0005%

heavy metals (as Pb): ≤0.0005%

storage temp.:  2-30°C

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

Analysis Note

Assay (alkalimetric): ≥ 99.5 %

Insoluble matter: ≤ 0.001 %

pH-value (5 %; water, 25 °C): 5.0 - 6.0

Chloride (Cl): ≤ 0.0003 %

Nitrate (NO₃): ≤ 0.001 %

Phosphate (PO₄): ≤ 0.0005 %

Heavy metals (ACS): ≤ 0.0005 %

Heavy metals (as Pb): ≤ 0.0005 %

Al (Aluminium): ≤ 0.000075 %

As (Arsenic): ≤ 0.00002 %

Ca (Calcium): ≤ 0.001 %

Cd (Cadmium): ≤ 0.0001 %

Cr (Chromium): ≤ 0.000075 %

Cu (Copper): ≤ 0.0002 %

Fe (Iron): ≤ 0.0002 %

Mg (Magnesium): ≤ 0.0005 %

Pb (Lead): ≤ 0.0002 %

Zn (Zinc): ≤ 0.0001 %

Residue on ignition (as sulfate): ≤ 0.005 %

Loss on Drying (105 °C): ≤ 0.1 %

Corresponds to ACS,ISO,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany