1.06467 Supelco

Sodium hydroxide

granulated EMPLURA®

Synonym: ‘Caustic soda’

  • CAS Number 1310-73-2

  • Linear Formula NaOH

  • Molecular Weight 40.00

  •  MDL number MFCD00003548

  •  EC Index Number 215-185-5



Related Categories Acids & Bases, Bases, Chemical Synthesis, Inorganic Bases, Synthetic Reagents More...
Quality Level   200
vapor density   >1 (vs air)
vapor pressure   <18 mmHg ( 20 °C)
  3 mmHg ( 37 °C)
assay   ≥99% NaOH basis (acidimetric)
form   granular
pH   >14 (20 °C, 100 g/L in H2O)
mp   318 °C (lit.)
solubility   1090 g/L
density   2.13 g/mL at 20 °C
anion traces   carbonate (as Na2CO3): ≤1%
  chloride (Cl-): ≤0.2%
  sulfate (SO42-): ≤0.05%
cation traces   Al: ≤0.002%
  Fe: ≤0.002%
  heavy metals (as Pb): ≤0.002%
SMILES string   [OH-].[Na+]
InChI   1S/Na.H2O/h;1H2/q+1;/p-1
storage conditions   Store at +5°C to +30°C.


Analysis Note

Assay (acidimetric,NaOH): ≥ 98.0 %
Carbonate (as Na₂CO₃): ≤ 1.0 %
Identity: passes test
Chloride (Cl): ≤ 0.2 %
Sulfate (SO₄): ≤ 0.05 %
Heavy metals (as Pb): ≤ 0.002 %
Al (Aluminium): ≤ 0.002 %
Fe (Iron): ≤ 0.002 %

Legal Information

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

Safety & Documentation

Safety Information

Protocols & Articles


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