1.06648

Sodium sulfate decahydrate

for analysis EMSURE^® ACS,Reag. Ph Eur

• Synonym(s): Sodium sulfate decahydrate
• Empirical Formula (Hill Notation): Na₂O₄S · 10H₂O
• CAS Number: 7727-73-3
• Molecular Weight: 322.20
• UNSPSC Code: 12352302
• EC Index Number: 231-820-9
• NACRES: NA.21
• MDL number: MFCD00149189
• Assay: ≥99.0% (alkalimetric), 98.5-101% dry basis (alkalimetric)
• Grade: ACS reagent
• Form: crystals

Properties

• grade: ACS reagent
• Quality Segment: 300
• agency: reag. Ph. Eur.
• product line: EMSURE^®
• assay: ≥99.0% (alkalimetric), 98.5-101% dry basis (alkalimetric)
• form: crystals
• impurities: ≤0.01% Insoluble matter
• loss: 52.0-57.0% loss on drying, 130 °C
• pH: 5.2-8.0 (25 °C, 50 g/L in H₂O, anhydrous substance)
• mp: 32.4 °C
• density: 1.464 g/cm³
• bulk density: 700 kg/m³
• anion traces: chloride (Cl^-): ≤0.0003%, phosphate (PO₄^3-): ≤0.0005%
• cation traces: As: ≤0.0001%, Ca: ≤0.002%, Fe: ≤0.0005%, K: ≤0.002%, Mg: ≤0.001%, N: ≤0.0003%, (heavy metals (ACS) ≤ 0.0003%)
• storage temp.: 15-25°C
• SMILES string: [Na+].[Na+].[S](=O)(=O)([O-])[O-].O.O.O.O.O.O.O.O.O.O
• InChI: 1S/2Na.H2O4S.10H2O/c;;1-5(2,3)4;;;;;;;;;;/h;;(H2,1,2,3,4);10*1H2/q2*+1;;;;;;;;;;;/p-2
• InChI key: RSIJVJUOQBWMIM-UHFFFAOYSA-L

Description

Application

• Nanoscale Stabilization Mechanism of Sodium Sulfate Decahydrate at Polyelectrolyte Interfaces: Discusses the stabilization mechanisms at the nanoscale, providing insights into sodium sulfate decahydrate′s applications in polyelectrolyte-enhanced processes, relevant in materials science and engineering (Akamo et al., 2024).

Analysis Note

Assay (alkalimetric): ≥ 99.0 %


Assay (alkalimetric, calculated on dried substance): 98.5 - 101.0 %


Identity: passes test


Appearance of solution: passes test


Insoluble matter: ≤ 0.01 %


pH (5 %;water, 25°C) 7.5 - 9.0


Acidity or alkalinity: passes test


Chloride (Cl): ≤ 0.0003 %


Phosphate (PO₄): ≤ 0.0005 %


Total nitrogen (N): ≤ 0.0003 %


Heavy metals (as Pb): ≤ 0.0003 %


As (Arsenic): ≤ 0.0001 %


Ca (Calcium): ≤ 0.002 %


Fe (Iron): ≤ 0.0005 %


K (Potassium): ≤ 0.002 %


Mg (Magnesium): ≤ 0.001 %


Loss on drying (130 °C): 52.0 - 57.0 %


corresponds to ACS,Reag. Ph Eur

Legal Information

EMSURE is a registered trademark of Merck KGaA, Darmstadt, Germany

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable