Sodium thiosulfate pentahydrate
SIGALD/13479 - puriss., meets analytical specification of Ph. Eur., BP, USP
CAS Number: 10102-17-7
Empirical Formula (Hill Notation): Na2O3S2 · 5H2O
Molecular Weight: 248.18
EC Number: 231-867-5
MDL Number: MFCD00149186
Linear Formula: Na2S2O3 · 5H2O
Product Type: Chemical
agency | suitable for EPA 1621 |
suitable for ISO 25101 | |
anion traces | sulfate, sulfite (as SO42-): ≤2000 mg/kg |
sulfide (S2-): in accordance | |
assay | 99.0-100.5% (USP, dry basis) |
99.0-101.0% (EP) | |
cation traces | As: ≤3 mg/kg |
Ca: ≤50 mg/kg | |
Fe: ≤10 mg/kg | |
form | crystalline |
grade | puriss. |
impurities | residual solvents, complies |
≤0.0005% heavy metals (as Pb) | |
InChI | 1S/2Na.H2O3S2.5H2O/c;;1-5 |
InChI key | PODWXQQNRWNDGD-UHFFFAOYSA |
loss | 32-37% loss on drying, 16 h (vacuum) |
pH | 6.0-8.4 (20 °C, 10%) |
quality | meets analytical specification of Ph. Eur., BP, USP |
Quality Level | 200 |
SMILES string | O.O.O.O.O.[Na+].[Na+].[O- |
suitability | complies for appearance of solution |
Packaging: | 2.5, 6×2.5 kg in poly bottle |
Packaging: | 500 g in poly bottle |
RIDADR | NONH for all modes of transport |
WGK Germany | WGK 1 |
Flash Point(F) | Not applicable |
Flash Point(C) | Not applicable |
Purity | 99.0-100.5% (USP, dry basis); 99.0-101.0% (EP) |
UNSPSC | 12352300 |