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Because of its high-level alkalinity, sodium hydroxide in aqueous solution directly causes bond breakage in proteins (especially disulfide bridges). Hair and fingernails are found to be dissolved after 20 hours of direct contact with sodium hydroxide at pH values higher than 9.2.
Concentrated (50%) aqueous solutions of sodium hydroxide have a characteristic viscosity, 78 m Pa ·s, that is much greater than that of water (1.0 mPa·s) and near that of olive oil (85 mPa·s) at room temperature.
14 lip 2023 · The aqueous solution of sodium hydroxide engages in a chemical reaction with solutions containing ferrous and ferric salts, leading to the creation of a visually cloudy green precipitate comprised of ferrous hydroxide, as well as a reddish-brown precipitate comprised of ferric hydroxide, respectively.
The NaOH module calculates the physical properties of aqueous sodium hydroxide solutions in the temperature range from 20 °C to 100 °C and in the concentration range from 0 to 50 Ma-% NaOH. The following physical properties are calculated: Density; Specific heat capacity; Thermal conductivity; Dynamic viscosity; Kinematic viscosity; Prandtl ...
The thermodynamic properties of aqueous NaOH are represented for the entire range to extremely high concentration by mole fraction based equations. The apparent molar volume and the solvent and solute activities are obtained from literature values based on experimental measurements extending over the ranges 273−523 K and 0−400 MPa.
Formula: H 2 Na 2 O 2. Molecular weight: 79.9942. IUPAC Standard InChI:InChI=1S/Na.H2O/h;1H2/q+1;/p-1 Copy. IUPAC Standard InChIKey:HEMHJVSKTPXQMS-UHFFFAOYSA-M Copy. CAS Registry Number: 54251-09-1.
Chemical properties. Sodium hydroxide is completely ionic, containing sodium ions and hydroxide ions. The hydroxide ion makes sodium hydroxide a strong base which reacts with acids to form water and the corresponding salts, e.g., with hydrochloric acid, sodium chloride is formed: NaOH(aq) + HCl(aq) → NaCl(aq) + H 2 O
