Merck
All Photos(2)

1.06469

Supelco

Sodium hydroxide

pellets for analysis (max. 0.02% K) EMSURE® ACS,Reag. Ph Eur,ISO

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

Quality Level

grade

ACS reagent

Agency

reag. ISO
reag. Ph. Eur.

vapor density

>1 (vs air)

vapor pressure

<18 mmHg ( 20 °C)
3 mmHg ( 37 °C)

product line

EMSURE®

assay

99-100% (total alkilinity calculated as NaOH)

form

pellets

impurities

≤0.0003% Total nitrogen (N)

pH

>14 (20 °C, 100 g/L in H2O)

mp

318 °C (lit.)

solubility

water: 1090 g/L at 20 °C

density

2.13 g/cm3 at 20 °C

anion traces

carbonate (as Na2CO3): ≤0.5%
chloride (Cl-): ≤0.0005%
phosphate (PO43-): ≤0.0005%
silicate (as SiO2): ≤0.001%
sulfate (SO42-): ≤0.0005%

cation traces

Al: ≤0.0005%
As: ≤0.0001%
Ca: ≤0.0005%
Cu: ≤0.0002%
Fe: ≤0.0005%
Hg: ≤0.00001%
K: ≤0.020%
Mg: ≤0.0005%
Ni: ≤0.0005%
Pb: ≤0.0005%
Zn: ≤0.001%
heavy metals (as Ag): ≤0.0005%
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

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Linkage

Replaces: SX0590; SX0590-20

Analysis Note

Assay (acidimetric,NaOH): 99 - 100 %
Assay (total alkalinity calc. as NaOH): 99 - 100 %
Identity: passes test
Appearance of solution: passes test
Carbonate (as Na₂CO₃): ≤ 0.5 %
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.0005 %
Silicate (SiO₂): ≤ 0.001 %
Sulfate (SO₄): ≤ 0.0005 %
Total nitrogen (N): ≤ 0.0003 %
Heavy metals (as Ag): ≤ 0.0005 %
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 %
Hg (Mercury): ≤ 0.00001 %
K (Potassium): ≤ 0.020 %
Mg (Magnesium): ≤ 0.0005 %
Ni (Nickel): ≤ 0.0005 %
Pb (Lead): ≤ 0.0005 %
Zn (Zinc): ≤ 0.001 %

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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