All Photos(2)

1.58793

Supelco

Sodium hydroxide solution 50%

for analysis EMSURE®

Synonym(s):
Sodium hydroxide solution
Linear Formula:
NaOH
CAS Number:
Molecular Weight:
40.00
MDL number:

Quality Level

vapor pressure

2 hPa ( 20 °C)
3 mmHg ( 37 °C)

concentration

49.0-51.0% NaOH

impurities

≤0.0003% Total nitrogen (N)
≤0.0005% Al (Aluminium)
≤0.0005% Fe (Iron)
≤0.0005% Heavy metals (as Pb)
≤0.0005% Phosphate (PO4)
≤0.005% Silicate (SiO2)
≤0.005% Sulfate (SO4)
≤0.01% Chloride (Cl)
≤0.01% K (Potassium)

color

APHA: ≤10

pH

14 (20 °C, 89 g/L in H2O)

bp

135 °C/1013 hPa

mp

12 °C

density

1.52 g/cm3 at 20 °C

storage temp.

15-25°C

SMILES string

[OH-].[Na+]

InChI

1S/Na.H2O/h;1H2/q+1;/p-1

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

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Analysis Note

Assay (acidimetric, as NaOH): 49.0 - 51.0 %
Carbonate (as Na₂CO₃): ≤ 0.2
Color (Hazen): ≤ 10 Hazen
Chloride (Cl): ≤ 0.01 %
Phosphate (PO₄): ≤ 0.0005 %
Silicate (SiO₂): ≤ 0.005 %
Sulfate (SO₄): ≤ 0.005 %
Total nitrogen (N): ≤ 0.0003 %
Heavy metals (as Pb): ≤ 0.0005 %
Al (Aluminium): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %
K (Potassium): ≤ 0.01 %

Legal Information

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

Pictograms

Corrosion

Signal Word

Danger

Hazard Statements

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

Certificate of Analysis

Certificate of Origin

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