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Merck
CN

06203

Sodium hydroxide

puriss., meets analytical specification of Ph. Eur., BP, NF, E524, 98-100.5%, pellets

Synonym(s):

Caustic soda

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About This Item

Linear Formula:
NaOH
CAS Number:
Molecular Weight:
40.00
PubChem Substance ID:
UNSPSC Code:
12352302
NACRES:
NA.21
EC Number:
215-185-5
MDL number:
Assay:
98-100.5%
Vapor pressure:
<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
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vapor density

>1 (vs air)

Quality Segment

vapor pressure

<18 mmHg ( 20 °C), 3 mmHg ( 37 °C)

grade

puriss.

assay

98-100.5%

form

pellets

quality

meets analytical specification of Ph. Eur., BP, NF, E524

impurities

≤0.0005% total nitrogen (N), ≤0.002% heavy metals (as Pb), ≤0.5% Na2CO3

mp

318 °C (lit.)

solubility

water: soluble 1260 g/L at 20 °C

density

2.13 g/cm3 at 20 °C

anion traces

chloride (Cl-): ≤0.002%, phosphate (PO43-): ≤0.001%, silicate (as SiO2): ≤0.01%, sulfate (SO42-): ≤0.003%

cation traces

Al: ≤0.001%, As: ≤0.0002%, Ca: ≤0.001%, Fe: ≤0.001%, Hg: ≤0.0001%, K: ≤0.1%, Pb: ≤0.5 ppm

SMILES string

[OH-].[Na+]

InChI

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

InChI key

HEMHJVSKTPXQMS-UHFFFAOYSA-M

General description

Sodium hydroxide, also known as lye and caustic soda, is a strong base used universally as a neutralization agent in the chemical industry, paper making, petroleum refining, cleaning compounds, and drain cleaners.

Application

Sodium hydroxide can be used as:
  • A reagent in the gold-catalyzed selective oxidation of glycerol to glyceric acid.
  • A catalyst for the cross-dehydrogenative coupling of alcohols and hydrosilanes to synthesize silyl ethers.
  • A base in the transition-metal free Sonogashira-type couplings of aryl halides and alkynes to synthesize ynones in the presence of PEG as a phase-transfer agent.



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pictograms

Corrosion

signalword

Danger

hcodes

Hazard Classifications

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

Storage Class

8B - Non-combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable



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