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
• UNSPSC Code: 12352305
• EC Index Number: 215-185-5
• NACRES: NA.21

Properties

• Quality Level: 300
• agency: suitable for SM 4500 - NH3
• 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

General description

Sodium hydroxide (caustic soda) is an inorganic source of hydroxide ions that can be used to alkylate phenols, alcohols, aldehydes, and ketones. NaOH can also be used to convert amides into amines, to produce dichlorocarbenes, and in saponification of carboxylic acid derivatives.

Application

Sodium hydroxide may be used:

• As a deprotonator in the synthesis of nanoparticles of zeolitic imidazolate framework (ZIF-94).
• As a precipitating agent in the synthesis of NiO (nickel oxide) nanoparticles using nickel nitrate.
• As a pH controller in the synthesis of zinc chromite (ZnCr₂O₄) oxide powder from zinc nitrate and chromium nitrate by hydrothermal process.

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
• signalword: Danger
• hcodes: H290,H314
• pcodes: 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: 8A - Combustible corrosive hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable