Sodium tetrathionate dihydrate

Product Name

Sodium tetrathionate dihydrate, purum p.a., ≥98.0% (T)

InChI

1S/2Na.H2O6S4.2H2O/c;;1-9(2,3)7-8-10(4,5)6;;/h;;(H,1,2,3)(H,4,5,6);2*1H2/q2*+1;;;/p-2

SMILES string

O.O.[Na+].[Na+].[O-]S(=O)(=O)SSS([O-])(=O)=O

InChI key

HAEPBEMBOAIUPN-UHFFFAOYSA-L

grade

purum p.a.

assay

≥98.0% (T)

form

powder or crystals

impurities

10.5-20.0% water (Karl Fischer)

pH

4-6 (25 °C, 30.6 g/L)

solubility

H₂O: 50 mg/mL, slightly turbid, colorless

density

2.1 g/mL at 25 °C (lit.)

anion traces

thiosulfate (S₂O₃^2-): ≤500 mg/kg

cation traces

Ca: ≤500 mg/kg
Cd: ≤50 mg/kg
Co: ≤50 mg/kg
Cu: ≤50 mg/kg
Fe: ≤50 mg/kg
K: ≤100 mg/kg
Ni: ≤50 mg/kg
Pb: ≤50 mg/kg
Zn: ≤50 mg/kg

storage temp.

2-8°C

Quality Level

200