71690

Sodium hydroxide

puriss. p.a., ACS reagent, K ≤0.02%, ≥98.0% (T), pellets

• Synonym(s): ‘Caustic soda’
• Linear Formula: NaOH
• CAS Number: 1310-73-2
• Molecular Weight: 40.00
• EC Number: 215-185-5
• MDL number: MFCD00003548
• UNSPSC Code: 12352302
• PubChem Substance ID: 329763439
• NACRES: NA.21

Properties

• grade: ACS reagent; puriss. p.a.
• Quality Level: 200
• vapor density: >1 (vs air)
• vapor pressure: <18 mmHg ( 20 °C); 3 mmHg ( 37 °C)
• assay: ≥98.0% (T)
• form: pellets
• technique(s): cell culture | plant: suitable
• impurities: ≤0.0003% total nitrogen (N); ≤0.0005% silicon dioxide (SiO₂); ≤1.0% sodium carbonate (Na₂CO₃)
• mp: 318 °C (lit.)
• solubility: water: soluble 1,260 g/L at 20 °C

Description

General description

Sodium hydroxide (NaOH) is an inorganic base. It participates in the oxidation of glycerol catalyzed by Au/charcoal or Au/graphite.[1] It also participates in solvent-free aldol condensation reaction.[2]

Application

Sodium hydroxide may be employed for the direct oxidation of sodium borohydride, which was investigated by cyclic and linear voltammetry, chronoamperometry and chronopotentiometry.[3] It may be used to compose citrate buffer and borate buffers.[4]
It may be used in the synthesis of following compounds:[5]

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

Other Notes

Reagent for the decomposition of silicates by fusion.

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
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable