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1.06512 Supelco

Sodium thiosulfate

anhydrous EMPLURA®

Synonym: Antichlor, Sodium thiosulfate

  • CAS Number 7772-98-7

  • Empirical Formula (Hill Notation) Na2O3S2

  • Molecular Weight 158.11

  •  MDL number MFCD00003499

  •  EC Index Number 231-867-5

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Properties

Related Categories Chemical Synthesis, Chemicals for the synthesis of candidate COVID-19 treatments, Favipiravir, Nelfinavir Mesylate
Quality Level   200
assay   ≥97.0% (iodometric)
form   solid
potency   >5000 mg/kg LD50, oral (Rat)
pH   6.0-8.5 (20 °C, 50 g/L in H2O)
solubility   701 g/L
density   1.67 g/cm3 at 20 °C
bulk density   1350 kg/m3
anion traces   sulfide (S2-): ≤0.002%
cation traces   Fe: ≤ 0.005%
  heavy metals (as Pb): ≤ 0.005%
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
storage conditions   Store at +5°C to +30°C.

Description

Analysis Note

Assay (iodometric): ≥ 97.0 %
Identity: passes test
pH-value (5 %; water): 6.0 - 8.5
Sulphide (S): ≤ 0.002 %
Heavy metals (as Pb): ≤ 0.005 %
Fe (Iron): ≤ 0.005 %

Legal Information

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

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