31481-M

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
• UNSPSC Code: 12352302
• PubChem Substance ID: 329753782
• NACRES: NA.21

Properties

• grade: ACS reagent; puriss. p.a.
• Agency: USP/NF; reag. ISO; reag. Ph. Eur.
• vapor pressure: <0.1 hPa ( 20 °C)
• Assay: ≥99.0%
• form: crystalline
• impurities: ≤0.0005% heavy metals (by ICP-OES); ≤0.01% in water insoluble matters; ≤0.03% free alkali (as NaOH); ≤0.05% free acid (as H₂SO₄); ≤5 ppm total nitrogen (N)
• 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 ppm; phosphate (PO₄^3-): ≤0.001%
• cation traces: As: ≤0.0001%; Ca: ≤20 ppm; Fe: ≤5 ppm; K: ≤0.01%; Mg: ≤25 ppm
• suitability: complies for appearance of solution
• 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

Description

Application

NaSO₄ can also be used as a drying agent in organic synthesis for the removal of traces of water from organic extracts.

Safety Information

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