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1.06498

Supelco

Sodium hydroxide

pellets for analysis EMSURE®

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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

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

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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

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H290,H314

Hazard Classifications

Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

危险化学品

Certificates of Analysis (COA)

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Protocols

Analytical Method: Sulfate in Building Materials

Photometric or turbidimetric determination subsequent to water extraction/fusion melting

Ammonium Photometric Determination in Drinking and Surface Water

Photometric determination of ammonium ions in drinking and surface water samples by indophenol blue method using Spectroquant® test kits and spectrophotometer.

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