31481

Sodium sulfate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., anhydrous, ≥99.0%

• Linear Formula: Na₂SO₄
• CAS Number: 7757-82-6
• Molecular Weight: 142.04
• EC Number: 231-820-9
• MDL number: MFCD00003504
• PubChem Substance ID: 329753782
• NACRES: NA.22

Properties

• Quality Level: 200
• grade: ACS reagent; puriss. p.a.
• Agency: USP/NF; reag. ISO; reag. Ph. Eur.
• assay: ≥99.0%
• form: crystalline
• impurities: ≤0.0005% heavy metals (by ICP-OES); ≤0.0005% total nitrogen (N); ≤0.01% in water insoluble matters; ≤0.03% free alkali (as NaOH); ≤0.05% free acid (as H₂SO₄)
• loss: ≤0.5% loss on ignition, 800 °C
• pH: 5.2-8.0 (20 °C, 5%)
• mp: 884 °C (lit.)
• density: 2.68 g/mL at 25 °C (lit.)
• anion traces: chloride (Cl^-): ≤10 mg/kg; phosphate (PO₄^3-): ≤10 mg/kg
• cation traces: As: ≤1 mg/kg; Ca: ≤20 mg/kg; Fe: ≤5 mg/kg; K: ≤100 mg/kg; Mg: ≤25 mg/kg
• suitability: complies for appearance of solution
• storage temp.: 2-8°C
• SMILES string: [Na+].[Na+].[O-]S([O-])(=O)=O
• InChI: 1S/2Na.H2O4S/c;;1-5(2,3)4/h;;(H2,1,2,3,4)/q2*+1;/p-2
• InChI key: PMZURENOXWZQFD-UHFFFAOYSA-L

Safety Information

• Storage Class Code: 13 - Non Combustible Solids
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable