1.06498

Sodium hydroxide

pellets for analysis EMSURE^®

• Synonym(s): ‘Caustic soda’
• Linear Formula: NaOH
• CAS Number: 1310-73-2
• Molecular Weight: 40.00
• MDL number: MFCD00003548
• EC Index Number: 215-185-5

Properties

• Quality Level: 300
• vapor density: >1 (vs air)
• vapor pressure: <18 mmHg ( 20 °C); 3 mmHg ( 37 °C)
• product line: EMSURE^®
• assay: ≥99% NaOH basis (acidimetric)
• form: pellets
• impurities: ≤0.0003% Total nitrogen (N)
• pH: >14 (20 °C, 100 g/L in H₂O)
• mp: 318 °C (lit.)
• solubility: 1090 g/L
• density: 2.13 g/cm³ at 20 °C
• anion traces: carbonate (as Na₂CO₃): ≤1%; chloride (Cl^-): ≤0.012%; phosphate (PO₄^3-): ≤0.0005%; silicate (as SiO₂): ≤0.001%; sulfate (SO₄^2-): ≤0.010%
• cation traces: Al: ≤0.0005%; As: ≤0.0001%; Ca: ≤0.0005%; Cu: ≤0.0002%; Fe: ≤0.0005%; K: ≤0.05%; Mg: ≤0.0005%; Ni: ≤0.00025%; Pb: ≤0.0005%; Zn: ≤0.001%; heavy metals (as Pb): ≤0.0005%
• storage temp.: 2-30°C
• SMILES string: [OH-].[Na+]
• InChI: 1S/Na.H2O/h;1H2/q+1;/p-1
• InChI key: HEMHJVSKTPXQMS-UHFFFAOYSA-M

Description

Analysis Note

Assay (acidimetric,NaOH): ≥ 99.0 %
Carbonate (as Na₂CO₃): ≤ 1.0 %
Chloride (Cl): ≤ 0.012 %
Phosphate (PO₄): ≤ 0.0005 %
Silicate (SiO₂): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.010 %
Total nitrogen (N): ≤ 0.0003 %
Heavy metals (as Pb): ≤ 0.0005 %
Al (Aluminium): ≤ 0.0005 %
As (Arsenic): ≤ 0.0001 %
Ca (Calcium): ≤ 0.0005 %
Cu (Copper): ≤ 0.0002 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.05
Mg (Magnesium): ≤ 0.0005 %
Ni (Nickel): ≤ 0.00025 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.001 %

Legal Information

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

Safety Information

• Pictograms: GHS05
• Signal Word: Danger
• Hazard Statements: H290 - H314
• Precautionary Statements: P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Storage Class Code: 8B - Non-combustible, corrosive hazardous materials
• WGK: WGK 1
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable