Sodium thiosulfate
SIGALD/72049 - purum p.a., anhydrous, ≥98.0% (RT)
CAS Number: 7772-98-7
Empirical Formula (Hill Notation): Na2O3S2
Molecular Weight: 158.11
EC Number: 231-867-5
MDL Number: MFCD00003499
Linear Formula: Na2S2O3
Product Type: Chemical
| anion traces | sulfide (S2-): ≤50 mg/kg |
| assay | ≥98.0% (RT) |
| cation traces | Ca: ≤50 mg/kg |
| Cd: ≤50 mg/kg | |
| Co: ≤50 mg/kg | |
| Cu: ≤50 mg/kg | |
| Fe: ≤50 mg/kg | |
| K: ≤500 mg/kg | |
| Ni: ≤50 mg/kg | |
| Pb: ≤50 mg/kg | |
| Zn: ≤50 mg/kg | |
| form | crystals |
| grade | purum p.a. |
| InChI | 1S/2Na.H2O3S2/c;;1-5(2,3) |
| InChI key | AKHNMLFCWUSKQB-UHFFFAOYSA |
| pH | 6.0-8.5 (25 °C, 50 mg/mL in H2O) |
| Quality Level | 200  |
| SMILES string | [Na+].[Na+].[O-]S([O-])(= |
| Application: | Sodium thiosulfate (Na2S2O3) may be used in the following studies: • Industrial synthesis of methylene blue. • Quantitative estimation of elemental iodine by titrimetry. • Detection of trace levels of cysteine by employing triangular silver nanoplates (TAg-NPs). |
| General description: | The product is anhydrous sodium thiosulfate (Na2S2O3). It can be obtained from Na2S2O3.10H2O by heating above 100°C. It can be synthesized from sodium sulfate. |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥98.0% (RT) |
| UNSPSC | 12352300 |