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1.06498

Sodium hydroxide

pellets for analysis EMSURE®

Synonym(s):

Caustic soda

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About This Item

Linear Formula:
NaOH
CAS Number:
1310-73-2
Molecular Weight:
40.00
NACRES:
NA.21
EC Index Number:
215-185-5
UNSPSC Code:
12352305
MDL number:
MFCD00003548
Assay:
≥99% NaOH basis (acidimetric)
Form:
pellets
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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

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pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H290,H314

Hazard Classifications

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

flash_point_f

Not applicable

flash_point_c

Not applicable

Storage Class

8B - Non-combustible corrosive hazardous materials

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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