Dodecyl Trimethyl Ammonium Chloride | ||||||
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Dodecyl Trimethyl Ammonium Chloride (DTAC), also known as Lauryl Trimethyl Ammonium Chloride, is a cationic surfactant belonging to the class of quaternary ammonium salts, specifically a fatty-alkyl quaternary ammonium salt with a single long straight-chain alkyl group. DTAC has a variety of uses, including as a catalyst, emulsifier, bactericide, disinfectant, and antistatic agent, and is widely used in industrial production. It has good chemical stability, heat resistance, light resistance, and resistance to strong acids and alkalis, as well as excellent penetrating, emulsifying, and antistatic properties, as well as bactericidal ability. The two specifications of DTAC are both soluble in water and have stable chemical properties. When the active content is 32% to 35%, DTAC is a light yellow liquid with a freezing point of -15°C, a relative density of 0.981 g/cm³, an HLB value of 17.1, and a flash point of 60°C. When the active content is 49% to 52%, DTAC is a viscous liquid with a freezing point between -12°C and -9°C, a density of 0.892 g/cm³, a flash point less than 27°C, and a surface tension of 33×10⁻³ N/cm in a 10% aqueous solution. The production method of DTAC involves mixing dodecyl dimethyl tertiary amine, isopropanol, and water, and then reacting under the catalysis of an alkali, by gradually heating and introducing chloroform into a pressure reactor. After the reaction, the temperature is reduced to atmospheric pressure, and then the material is discharged and packaged. In terms of safety, DTAC is classified as a non-hazardous product but should not be mixed with anionic compounds. It should be stored in a cool and dry place, avoiding exposure to sunlight and rain. DTAC is also known by other names such as Lauryl Trimethyl Ammonium Chloride, and it is available in various specifications with active contents of 50%, 70%, and 99%. The pH value in a 10% aqueous solution is 5.0-9.0, and the melting point is 237°C. Industrial applications of DTAC include its use as an antistatic agent for synthetic fibers, an emulsifier in drilling deep wells, and as an anti-stick agent and separator in the latex industry. In the medical field, DTAC is used as a hemolytic agent in blood sample analysis. Additionally, in the production of ink, DTAC, as part of the additives, can improve the rheology, leveling, transferability, and other characteristics of the ink. Didecyl Dimethyl Ammonium Chloride Cetyl Trimethyl Ammonium Chloride | ||||||
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