Formula: (NH ) SO
MW: 132.14 g/mol
Melting Pt: 336…339 °C
Density: 1.78 g/cm³ (20 °C)
Storage Temperature: Ambient

MDL Number: MFCD00003391
CAS Number: 7783-20-2
EINECS: 231-984-1
UN: 0000
REACH: 01-2119455044-46
Merck Index: 13,00559

Assay

Min. 99.5 %

pH (25°C; 5 %)

5.0 - 6.0

Heavy metals (as Pb)

Max. 5 ppm

Ignition residue (SO₄)

Max. 50 ppm

Insolubility in wa ter

Max. 10 ppm

Loss on drying (105°C)

Max. 0.1 %

Cl 

Max. 3 ppm

NO₃ 

Max. 10 ppm

PO₄ 

Max. 5 ppm

As 

Max. 0.2 ppm

Ca 

Max. 10 ppm

Cd 

Max. 1 ppm

Cu 

Max. 2 ppm

Fe 

Max. 2 ppm

K 

Max. 20 ppm

Mg 

Max. 5 ppm

Na 

Max. 20 ppm

Pb 

Max. 2 ppm

Zn 

Max. 1 ppm

Conforms to ACS

Passes test

Conforms to Reag. Ph.Eur.

Passes test