Merck
All Photos(2)

1.05588

Supelco

Sodium hydroxide solution min. 10% (1.11)

for analysis EMSURE®

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

Quality Level

vapor pressure

3 mmHg ( 37 °C)

product line

EMSURE®

form

liquid

concentration

10.0-10.5% NaOH

impurities

≤0.0001% Total nitrogen (N)
≤0.0005% Al (Aluminium)
≤0.0005% Chloride (Cl)
≤0.0005% Fe (Iron)
≤0.0005% Heavy metals (as Pb)
≤0.0005% Phosphate (PO4)
≤0.0005% Sulphate (SO?)
≤0.001% Silicate (SiO2)
≤1% Carbonate (as Na2CO3)

pH

13.8 (20 °C in H2O)

density

1.11 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): 10.0 - 10.5 %
Carbonate (as Na₂CO₃): ≤ 1 %
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.0005 %
Silicate (SiO₂): ≤ 0.001 %
Sulphate (SO₄): ≤ 0.0005 %
Total nitrogen (N): ≤ 0.0001 %
Heavy metals (as Pb): ≤ 0.0005 %
Al (Aluminium): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %

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

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Certificate of Quality

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Protocols

Analytical Method: Color, ADMI as per APHA 2120 F

Method: Spectrophotometric, ADMI weighted ordinate method for colored water and wastewater

Analytical Method: ADMI Color Measurement for Prove

Photometric determination using the indophenol blue method after extraction with calcium chloride solution

Analytical Method: Zinc in soils

Photometric determination with pyridylazoresorcinol (PAR) subsequent to acid extraction

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