1.06513
Sodium thiosulfate pentahydrate
pure
Synonym(s):
Sodium thiosulfate pentahydrate, Antichlor
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About This Item
Empirical Formula (Hill Notation):
Na2O3S2 · 5H2O
CAS Number:
Molecular Weight:
248.18
UNSPSC Code:
12352302
EC Index Number:
231-867-5
MDL number:
Quality Level
form
solid
pH
6.0-7.5 (20 °C, 100 g/L in H2O)
mp
48 °C
solubility
701 g/L
density
1.74 g/cm3 at 20 °C
application(s)
pharma/biopharma processes
storage temp.
2-30°C
SMILES string
[Na+].[Na+].[S](=S)(=O)([O-])[O-].O.O.O.O.O
InChI
1S/2Na.H2O3S2.5H2O/c;;1-5(2,3)4;;;;;/h;;(H2,1,2,3,4);5*1H2/q2*+1;;;;;;/p-2
InChI key
PODWXQQNRWNDGD-UHFFFAOYSA-L
Application
Sodium thiosulfate pentahydrate is used as antioxidant or chelating agent and is suitable for use in pharmaceutical processes.
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Storage Class
13 - Non Combustible Solids
wgk
WGK 1
flash_point_f
Not applicable
flash_point_c
Not applicable
Certificates of Analysis (COA)
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