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Sodium hydroxide solution

49-51% in water, eluent for IC

Linear Formula:
CAS Number:
Molecular Weight:
MDL number:
PubChem Substance ID:

Quality Level

vapor pressure

3 mmHg ( 37 °C)


49-51% in water


immunocytochemistry: suitable


≤0.0005% total nitrogen (N)
≤0.01% ammonium hydroxide precipitate

anion traces

carbonate (as Na2CO3): ≤1000 mg/kg
chloride (Cl-): ≤100 mg/kg
phosphate (PO43-): ≤5 mg/kg
silicate (as SiO2): ≤10 mg/kg
sulfate (SO42-): ≤10 mg/kg

cation traces

Al: ≤5 mg/kg
Ca: ≤10 mg/kg
Cd: ≤5 mg/kg
Co: ≤5 mg/kg
Cr: ≤5 mg/kg
Cu: ≤5 mg/kg
Fe: ≤5 mg/kg
K: ≤100 mg/kg
Mg: ≤5 mg/kg
Mn: ≤5 mg/kg
Ni: ≤5 mg/kg
Pb: ≤10 mg/kg
Zn: ≤5 mg/kg

SMILES string




InChI key


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General description

Sodium hydroxide solution is a strong alkaline solution which may be suitable to make dyes, drugs, cellophane, rayon and bleaches. It may also be suitable for petrochemical industry to remove impurities. This solution needs to be handled carefully, close proximity or ingestion could cause blindness, permanent scarring and sometimes can be fatal.


Sodium hydroxide solution may be used to characterize the morphology of the produced colloids using UV-Visible spectroscopy and transmission electron microscopy. It may be used to measure specific heats using calorimeter. It may also be used to study the first stages of silver oxidation using voltammetry and ellipsometry.

Metrohm IC application note AN-P-055: Lactose residues in "lactose-free" milk.


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Hazard Classifications

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

Storage Class Code

8B - Non-combustible, corrosive hazardous materials

WGK Germany


Flash Point F

Not applicable

Flash Point C

Not applicable

Personal Protective Equipment

dust mask type N95 (US),Eyeshields,Gloves

Certificate of Analysis

Certificate of Origin

Anne O'Daly
Sodium, 21-21 (2001)
Initial stages of anodic oxidation of silver in sodium hydroxide solution studied by potential sweep voltammetry and ellipsometry.
Droog, John MM, Peter T. Alderliesten, and Gosse A. Bootsma.
J. Electroanal. Chem. Interfac. Electrochem., 99, 173-186 (1979)
A new method for fast preparation of highly surface-enhanced Raman scattering (SERS) active silver colloids at room temperature by reduction of silver nitrate with hydroxylamine hydrochloride.
Leopold, Nicolae, and Bernhard Lendl.
The Journal of Physical Chemistry B, 107, 5723-5727 (2003)
Sodium Hydroxide Solutions.
Bertetti, John W., and Warren L. McCabe.
Industrial & Engineering Chemistry Research, 28, 247-248 (1936)
Jesper Hjortnaes et al.
Advanced healthcare materials, 4(1), 121-130 (2014-06-25)
Three dimensional (3D) hydrogel platforms are powerful tools, providing controllable, physiologically relevant microenvironments that could aid in understanding how various environmental factors direct valvular interstitial cell (VIC) phenotype. Continuous activation of VICs and their transformation from quiescent fibroblast to activated...

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