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484024 Sigma-Aldrich

Sodium hydroxide

reagent grade, 97%, flakes

Synonym: ‘Caustic soda’

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Properties

Related Categories Acids & Bases, Acids and Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography,
Quality Level   100
grade   reagent grade
vapor density   >1 (vs air)
vapor pressure   <18 mmHg ( 20 °C)
  3 mmHg ( 37 °C)
assay   97%
form   flakes
application(s)   titration: suitable
mp   318 °C (lit.)
solubility   water: soluble 1260 g/L at 20 °C
density   2.13 g/cm3
SMILES string   [OH-].[Na+]
InChI   1S/Na.H2O/h;1H2/q+1;/p-1
InChI key   HEMHJVSKTPXQMS-UHFFFAOYSA-M

Description

General description

Sodium hydroxide also known as caustic soda is a water soluble base with a wide range of industrial applications. Purification of diatomite with NaOH enhances its ability to adsorb basic dyes. NaOH when coupled with thermal desorption is reported to improve the degradation of polychlorinated biphenyl (PCB) in PCB contaminated soil. The efficiency of the aqueous solution of sodium citrate (Na3Ci) and sodium hydroxide (NaOH) to dissolve SO2 has been investigated.

Application

Sodium hydroxide (NaOH) has been used to trap the hydrogen bromide gas released during the photo-bromination of 4-nitro-o-xylene.
It may be used in the following processes:
• Boehm′s titration
• dissolution testing
• pH adjustment during the silver nanoparticles synthesis

Packaging

1 kg in poly bottle

10, 25 kg in poly drum

Safety & Documentation

Safety Information

Symbol 
GHS05  GHS05
Signal word 
Danger
Hazard statements 
RIDADR 
UN 1823 8 / PGII
WGK Germany 
WGK 1
RTECS 
WB4900000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

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Peer-Reviewed Papers
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References

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