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Sodium hydroxide(Caustic soda, caustic soda, caustic soda, caustic soda flakes)
Sodium hydroxide, also known as caustic soda, caustic soda, caustic soda, and flake caustic soda, is an inorganic compound with the chemical formula NaOH and a relative molecular weight of 39.9970.
Physical properties
Density: 2.130 g/cm³
Melting point: 318.4℃(591 K)
Boiling point: 1390℃ (1663 K)
Vapor pressure: 24.5mmHg(25°C)
Saturated vapor pressure: 0.13 Kpa (739℃)
Appearance: white crystalline powder
Solubility: easily soluble in water, ethanol, glycerol, insoluble in acetone, ether
Chemical properties
Sodium hydroxide is corrosive to fibers, skin, glass, ceramics, etc. It releases heat when dissolved or diluted as a concentrated solution; it can also generate a lot of heat when it reacts with inorganic acids to generate corresponding salts; it reacts with metal aluminum and zinc, non-metal boron and silicon to release hydrogen; it reacts with halogens such as chlorine, bromine, and iodine to undergo disproportionation reactions. It can precipitate metal ions from aqueous solutions to form hydroxides; it can cause oils and fats to undergo saponification reactions to generate corresponding organic acid sodium salts and alcohols, which is the principle of removing oil stains from fabrics.
СОПУТСТВУЮЩИЕ ПРОДУКТЫ
optical Fiber Raman Spectrometer
As an important spectral detection method, Raman spectroscopy has molecular fingerprint characteristics and is often used for the detection and identification of different substances. This product combines the surface-enhanced Raman scattering (SERS) effect with optical fiber sensing characteristics, and uses various types of optical fiber SERS probes developed to greatly improve the sensitivity of Raman spectrum detection and broaden the application range of portable Raman spectrometers. Combined with the optical fiber surface-enhanced Raman probe, the detection sensitivity of the portable Raman spectrometer is greatly improved;
⚫ Equipped with various specifications of Raman SERS probes to meet the needs of different application environments;
⚫ The fiber Raman probe with low-loss SMA interface can realize multiple insertion and removal of the fiber probe and Raman probe, which is convenient
Actual field application;
⚫ TE cooling CCD provides excellent performance such as low noise, high stability, and fast response. Combining the waveguide effect of optical fiber with the surface-enhanced Raman scattering (SERS) effect, we developed laser-induced evaporation self-assembly method, laser-induced liquid surface self-assembly method, slip-assisted self-assembly and other preparation methods with independent intellectual property rights, and developed Practical fiber optic SERS probes of various specifications. Relevant research work has been supported by many important scientific research projects such as the National 973 Program, the National Natural Science Foundation, and the Guangdong Provincial Natural Science Foundation. He has published more than 30 high-level SCI academic papers, authorized 3 U.S. invention patents, and authorized more than 11 Chinese invention patents. apply:Combining the optical fiber SERS probe with the developed portable Raman spectrometer has important application prospects in the field of liquid phase in-situ detection in food safety, environmental monitoring, biomedicine and other fields.
