grade

ACS reagent

Quality Level

200

Assay

≥98%

form

powder

impurities

MnO₄^- reducers, passes test
≤0.01% insolubles

loss

10.0-12.0% loss on ignition

pH

3-3.5 (20 °C, 50 g/L)

anion traces

chloride (Cl^-): ≤0.005%

cation traces

Ca: ≤0.005%
Fe: ≤0.002%
K: ≤0.01%
Mg: ≤0.005%
Na: ≤0.05%
Ni: ≤0.02%
Zn: ≤0.005%
heavy metals: ≤0.002% (by ICP)

storage temp.

2-8°C

SMILES string

O.[Mn++].[O-]S([O-])(=O)=O

InChI

1S/Mn.H2O4S.H2O/c;1-5(2,3)4;/h;(H2,1,2,3,4);1H2/q+2;;/p-2

InChI key

ISPYRSDWRDQNSW-UHFFFAOYSA-L