Sodium sulfate
SIGMA/71959 - BioUltra, anhydrous, ≥99.0% (T)
Synonym: Disodium sulfate; Sodium sulphate; Sulfuric acid disodium salt
CAS Number: 7757-82-6
Empirical Formula (Hill Notation): Na2O4S
Molecular Weight: 142.04
EC Number: 231-820-9
MDL Number: MFCD00003504
Linear Formula: Na2SO4
Product Type: Chemical
| λ | 1 M in H2O |
| anion traces | chloride (Cl-): ≤10 mg/kg |
| phosphate (PO43-): ≤20 mg/kg | |
| assay | ≥99.0% (T) |
| cation traces | Al: ≤5 mg/kg |
| As: ≤1 mg/kg | |
| Ba: ≤5 mg/kg | |
| Bi: ≤5 mg/kg | |
| Ca: ≤20 mg/kg | |
| Cd: ≤5 mg/kg | |
| Co: ≤5 mg/kg | |
| Cr: ≤5 mg/kg | |
| Cu: ≤5 mg/kg | |
| Fe: ≤5 mg/kg | |
| K: ≤100 mg/kg | |
| Li: ≤5 mg/kg | |
| Mg: ≤20 mg/kg | |
| Mn: ≤5 mg/kg | |
| Mo: ≤5 mg/kg | |
| Ni: ≤5 mg/kg | |
| Pb: ≤5 mg/kg | |
| Sr: ≤5 mg/kg | |
| Zn: ≤5 mg/kg | |
| density | 2.68 g/mL at 25 °C (lit.) |
| form | powder or crystals |
| grade | anhydrous |
| impurities | insoluble matter, passes filter test |
| ≤0.0005% total nitrogen (N) | |
| InChI | 1S/2Na.H2O4S/c;;1-5(2,3)4 |
| InChI key | PMZURENOXWZQFD-UHFFFAOYSA |
| loss | ≤0.2% loss on ignition, 900 °C |
| mp | 884 °C (lit.) |
| pH | 5.0-7.5 (25 °C, 1 M in H2O) |
| product line | BioUltra |
| Quality Level | 100  |
| SMILES string | [Na+].[Na+].[O-]S([O-])(= |
| solubility | H2O: 1 M at 20 °C, clear, colorless |
| UV absorption | λ: 260 nm Amax: 0.020 |
| λ: 280 nm Amax: 0.018 |
| RIDADR | NONH for all modes of transport |
| WGK Germany | WGK 1 |
| Flash Point(F) | Not applicable |
| Flash Point(C) | Not applicable |
| Purity | ≥99.0% (T) |
| mp | 884 °C (lit.) |
| Density | 2.68 g/mL at 25 °C (lit.) |
| UNSPSC | 12352302 |