Merck Sodium hydroxide

Grade:  reagent

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 (PO43-): ≤0.0005%

silicate (as SiO2): ≤0.001%

sulfate (SO42-): ≤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

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