Sigma-Aldrich Sodium Hydroxide Solution

Vapor Pressure

3 mmHg ( 37 °C)

Quality Level

300

Product Line

EMSURE^®

Form

liquid

Concentration

10.0-10.5% NaOH

Impurities

≤0.0001% Total nitrogen (N)
≤0.0005% Al (Aluminium)
≤0.0005% Chloride (Cl)
≤0.0005% Fe (Iron)
≤0.0005% Heavy metals (as Pb)
≤0.0005% Phosphate (PO₄)
≤0.0005% Sulphate (SO?)
≤0.001% Silicate (SiO₂)
≤1% Carbonate (as Na₂CO₃)

pH

13.8 (20 °C in H₂O)

Density

1.11 g/cm³at 20 °C

Storage Temp.

15-25°C

Smiles String

[OH-].[Na+]

Related Categories

Caustic Alkalis & Bases

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Application

• Efficient Removal of Aqueous Heavy Metals:A study leveraging sodium hydroxide solution (minimum 10%) in the preparation of Na/N co-doped seaweed biochar composites for the removal of Pb(II) and Cu(II) from water. This research underscores the role of sodium hydroxide in environmental remediation technologies (Fu et Al., 2024).


• Acute Esophagitis Model:Sodium hydroxide solution is utilized in the treatment of acute esophagitis in a rat model, highlighting its potential therapeutic applications in biomedical research (Gurlek et Al., 2024).


• Dye Adsorption:The solution is used in the synthesis of kaolin-supported nickel oxide composites for catalytic oxidative degradation of methylene blue dye, serving as a pivotal study in water treatment and chemical engineering (Mohammed et Al., 2024).


• Chitosan Production:Research on the production of chitosan from shrimp shell utilizing sodium hydroxide solution followed by subcritical water hydrolysis, illustrating its critical role in advancing material science and sustainable production methods (Matouri et Al., 2024).

Analysis Note

Assay (acidimetric): 10.0 - 10.5 %
Carbonate (as Na₂CO₃): ≤ 1 %
Chloride (Cl): ≤ 0.0005 %
Phosphate (PO₄): ≤ 0.0005 %
Silicate (SiO₂): ≤ 0.001 %
Sulphate (SO₄): ≤ 0.0005 %
Total nitrogen (N): ≤ 0.0001 %
Heavy metals (as Pb): ≤ 0.0005 %
Al (Aluminium): ≤ 0.0005 %
Fe (Iron): ≤ 0.0005 %EMSURE is a registered trademark of Merck KGaA, Darmstadt, GermanyGHS05H290 - H314P234 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338 - P363