221465

Sodium hydroxide

ACS reagent, ≥97.0%, pellets

• Synonym(s): Caustic soda
• Linear Formula: NaOH
• CAS Number: 1310-73-2
• Molecular Weight: 40.00
• NACRES: NA.21
• PubChem Substance ID: 329752270
• UNSPSC Code: 12352302
• EC Number: 215-185-5
• MDL number: MFCD00003548
• Assay: ≥97.0%
• Form: pellets
• Grade: ACS reagent

Properties

• InChI key: HEMHJVSKTPXQMS-UHFFFAOYSA-M
• InChI: 1S/Na.H2O/h;1H2/q+1;/p-1
• grade: ACS reagent
• agency: suitable for DIN 38407-42, suitable for EPA 1621, suitable for EPA 533, suitable for EPA 8327, suitable for EPA OTM-45, suitable for SM 4500 - NH3
• vapor density: >1 (vs air)
• vapor pressure: <18 mmHg ( 20 °C), 3 mmHg ( 37 °C)
• assay: ≥97.0%
• form: pellets
• technique(s): cell culture | mammalian: suitable, titration: suitable
• impurities: ≤0.001% N compounds, ≤0.02% NH₄OH ppt., ≤1.0% Na₂CO₃
• Quality Level: 200
• pH: (ca.> 14 at 100 g/l at 20 °C)
• mp: 318 °C (lit.)
• solubility: water: soluble 1,260 g/L at 20 °C
• density: 2.13 g/cm³ at 20 °C
• anion traces: chloride (Cl^-): ≤0.005%, phosphate (PO₄^3-): ≤0.001%, sulfate (SO₄^2-): ≤0.003%
• cation traces: Fe: ≤0.001%, Hg: ≤0.1 ppm, K: ≤0.02%, Ni: ≤0.001%, heavy metals (as Ag): ≤0.002%
• application(s): PFAS testing

Description

General description

Sodium hydroxide (NaOH) also known as caustic soda is a water soluble inorganic base with a wide range of industrial application such as titration,[1] dissolution testing[2] and in impinger to remove acidic gases.[3] It participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite.[4] It participates in solvent-free aldol condensation reaction.[5]

Application

Sodium hydroxide (NaOH) was used in the following processes:

• Preparation of sodium 3,3′-bis(sulfonato)-4,4′-bis(chloroacetamido)azobenzene (BSBCA) that is utilized in protein cross-linking techniques.[6]
• Preparation of electrolyte solution to study the effect of electrolyte composition on the conversion of CO₂ to CO by electrochemical reduction.[7]
• Preparation of CSK (cytoskeleton) buffer for the three-dimensional (3D) slide method of preserving the 3D chromatin structure of testicular germ cells.[8]
• Synthesis of ZSMs (zeolite socony mobils).[9]

Sodium hydroxide may be employed for the deterimination of specific surface area of colloidal silica, via titration.[10] It may be employed for the direct oxidation of sodium borohydride, which was investigated by cyclic and linear voltammetry, chronoamperometry and chronopotentiometry.[11] It may be used to prepare citrate buffer and borate buffer.[12] It may be used in the synthesis of :

• alkylaryl amidosulfobetaines[13]
• (3 -[4-teroctylphenoxyethoxyethoxyethyl] dimethylammonio propane sulfonate (XOSB)[13]
• trisulfobetaines (TriSBn)[13]

Sodium hydroxide may be used as a base in titration methods[1], dissolution testing[2], for adjusting pH[14] and in the impinger to remove acidic gases.[1]
It may be used in the following processes:

• Conversion of glycerol to glyceric acid in the presence of gold catalyst.[15]
• Palladium-catalyzed cross-coupling reaction between vinylalkoxysilanes and aryl bromides or chlorides to form styrenes.[16]

Other Notes

Go to Redi-Dri^™ Product Listing 795429

Legal Information

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Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H290,H314
• pcodes: P234 - P260 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A
• Storage Class: 8B - Non-combustible corrosive hazardous materials
• flash_point_f: Not applicable
• flash_point_c: Not applicable