Shaanxi BLOOM Tech Co., Ltd. is one of the most experienced manufacturers and suppliers of dodecyltrimethylammonium chloride cas 112-00-5 in China. Welcome to wholesale bulk high quality dodecyltrimethylammonium chloride cas 112-00-5 for sale here from our factory. Good service and reasonable price are available.
Dodecyltrimethylammonium chloride (DTAC) is a colorless or pale yellow transparent colloid with the chemical formula C15H34ClN, CAS 112-00-5. Colorless to pale yellow liquid or colloid, soluble in water and ethanol. Stable below 100 ° C, with good compatibility with cationic and nonionic surfactants. It has good chemical stability, heat resistance, light resistance, pressure resistance, strong acid and alkali resistance. It also has excellent permeability, emulsification, flexibility, anti-static and sterilization properties.
This product is used as a cationic surfactant and can also be applied to catalysts, emulsifiers, disinfectants, fungicides, anti-static agents, etc. Since its commercialization in the mid-20th century, DTAC has become a cornerstone of surfactant chemistry, valued for its cost-effectiveness, stability, and multifunctionality.
|
Chemical Formula |
C15H34ClN |
|
Exact Mass |
263 |
|
Molecular Weight |
264 |
|
m/z |
263 (100.0%), 265 (32.0%), 264 (16.2%), 266 (5.2%), 265 (1.2%) |
|
Elemental Analysis |
C, 68.27; H, 12.99; Cl, 13.43; N, 5.31 |
|
|
|
|
Melting point 37 ° C, Boiling point 412.12 ° C (rough estimate), Density 0.9265 (rough estimate), Refractive index n20/d 1.426, Flash point 19 ° C, Keep in dark place, sealed in dry, room temperature, Solubility h2o: 50 mg/ml, clear, colorless, Form powder or chunks, Color white to light yellow, Water soluble, Sensitivity hygroscopic, BRN 3915951, Stable Incompatible with strong oxidizing agents. Protect from moisture., InChIKeyDDXLVDQZPFLQMZ-UHFFFAOYSA-M.
Core Synthesis Method – Tertiary Amine Quaternization
This method is the mainstream industrial process for producing DTAC, featuring mild reaction conditions and simple operation. Its core lies in the nucleophilic substitution reaction between a tertiary amine and a haloalkane to form a quaternary ammonium salt.
(I) Raw Materials and Reaction Mechanism
The main raw materials are dodecyl dimethyl tertiary amine and methyl chloride, with a molar ratio controlled at 1:1.02–1.05.
Excess methyl chloride improves the conversion rate of the tertiary amine. A mixed solvent of ethanol and water is used as a co-solvent to enhance dissolution and mass transfer, and a small amount of sodium hydroxide or sodium carbonate is added as a catalyst to accelerate the reaction.
The reaction equation is:C12H25N(CH3)2+CH3ClNaOH[C12H25N(CH3)3]+Cl−
The reaction is irreversible and generates no by-products.
(II) Detailed Operating Procedures
First, add dodecyl dimethyl tertiary amine, ethanol-water mixed solvent, and catalyst sequentially into a closed reaction kettle. After uniform stirring, purge the air inside the kettle with nitrogen three times to prevent side reactions caused by oxygen, which would darken the product color.Next, heat the kettle to 75–85 °C, and slowly introduce methyl chloride under stirring while maintaining the internal pressure at 0.2–0.3 MPa. The reaction proceeds continuously for 4–5 hours.Upon completion, cool the mixture to room temperature and release pressure to obtain an alcoholic aqueous solution of DTAC. Vacuum concentration, crystallization, filtration, and drying yield a white needle-like solid product with a purity of over 99%.
II. Alternative Synthetic Route – Two-Step Method
When dodecyl dimethyl tertiary amine is in short supply, a two-step method using n-dodecanol as the starting material can be adopted.In the first step, n-dodecanol reacts with thionyl chloride to form dodecyl chloride at 60–70 °C for 2–3 hours.In the second step, dodecyl chloride undergoes quaternization with trimethylamine under alkaline conditions, under similar parameters to the tertiary amine quaternization method, finally producing DTAC.This route uses readily available raw materials but involves more steps and has a slightly lower conversion rate than the mainstream method.
III. Key Precautions for Synthesis
Methyl chloride is toxic and flammable; the reaction must be carried out in a closed system, and tail gas must be treated by absorption before discharge.Reaction temperature and pressure must be strictly controlled, as excessive values cause product decomposition and discoloration.Catalyst dosage should be moderate; excess catalyst complicates post-treatment and reduces product purity.
Dodecyltrimethylammonium chloride has various excellent properties and a wide range of applications.
Surfactant
It is a typical cationic surfactant with excellent surface activity, which can effectively reduce the surface tension of water and enhance the wetting, permeation, and dispersion ability of solutions.
Application example:
Detergent: As an additive in detergents, it can enhance washing effectiveness and improve stain removal ability.
Emulsifier: In the fields of cosmetics, food, medicine, etc., it is commonly used as an emulsifier to help oil-water mixing and form stable emulsions.
Catalyst
In chemical reactions, it can serve as a catalyst to promote the progress of the reaction, increase the reaction rate and yield.
Application example:
The production of para aminophenol by nitro reduction rearrangement method can serve as a transfer catalyst to promote the progress of nitro reduction rearrangement reaction and improve the yield of para aminophenol.
Other chemical reactions: In fields such as organic synthesis and fine chemicals, it can also serve as a catalyst for other chemical reactions to promote their progress.
Emulsifier
It has good emulsifying properties and can effectively emulsify various oils and waters, forming stable emulsions.
Application example:
Building waterproof coatings: By utilizing emulsifying properties, building waterproof coatings can be produced to improve their waterproof performance and stability.
Hair conditioner: As an emulsifier in hair conditioner, it can help the hair absorb and retain moisture, making the hair softer and smoother.
Cosmetics: It can also be used as an emulsifier in cosmetics to help the oil-water components in cosmetics mix evenly, improve the stability and effectiveness of cosmetics.
Neoprene latex: It can effectively emulsify neoprene monomer and promote it to form a stable lotion, which helps to improve the dispersion and thickening of neoprene latex and make it suitable for various coating, bonding and printing applications.
Disinfectants and fungicides
It has excellent bactericidal performance and can destroy the cell wall and membrane of bacteria, thereby achieving the purpose of sterilization.
Application example:
Medical and health: In the field of medical and health, it is commonly used as a disinfectant to disinfect surgical instruments, medical equipment, wards, etc., effectively killing bacteria, viruses, and other microorganisms to prevent cross infection.
Oilfield sterilization: In the process of oilfield exploitation, it can be used as a sterilizing agent to kill bacteria in oil wells, prevent bacteria from corroding and damaging oil well equipment, and improve the production efficiency and safety of oil wells.
Agricultural sterilization: In the field of agriculture, it can also be used as a crop protectant and soil disinfectant to prevent and control the growth of pathogens, fungi, and other harmful microorganisms, protecting the healthy growth of crops.
Antistatic agent
It has anti-static properties and can effectively prevent the generation and accumulation of static electricity, protecting the safety of equipment and products.
Application example:
Synthetic fiber: Adding it as an anti-static agent during the production process of synthetic fiber can effectively prevent static electricity from being generated during processing and use, improving the comfort and safety of the fiber.
Plastic film: Adding it as an anti-static agent in the production of plastic film can prevent static electricity from being generated during packaging, transportation, and use, avoiding damage and pollution caused by static electricity to the film.
Softener
It has softness and can make fibers, fabrics, etc. softer and smoother.
Application example:
Fabric softener: As the main active ingredient in fabric softeners, it can make fibers swell and feel soft, improving the comfort and wearing experience of fabrics.
Paper softener: In the paper industry, it can also be used as a paper softener to improve the softness and glossiness of paper, and enhance its printing and writing performance.
Ink additive
In ink production, it can be used as an additive to improve the rheological, leveling, transferability, and adhesion properties of ink, and enhance the printing effect of ink.
Application example:
Printing ink: Adding ink to printing ink can improve its dispersion and stability, making the ink more uniform and smooth during the printing process, and improving the quality and clarity of printed materials.
Ink additive: It can also be used as an additive for ink to improve the wetting, health and adhesion properties of ink, enhance the printing performance and application range of ink.
Other applications
In addition to the main application areas mentioned above, it can also be used in the following areas:
Fly ash fiber modification: By using it to modify the surface of fly ash fibers, the dispersibility, wettability, and adhesion of fly ash fibers can be improved, and the performance and application effect of fly ash fibers can be enhanced.
Oil well bactericide: During the oil well extraction process, it can be used as a bactericide to kill bacteria in the oil well, prevent bacteria from corroding and damaging the oil well equipment, and improve the production efficiency and safety of the oil well.
Wood preservative: It can also be used as a wood preservative to prevent wood from mold and decay in humid environments, and to extend the service life of wood.
Paper preservative: In the paper industry, it can be used as a paper preservative to prevent mold and deterioration of paper during storage and use, and to improve the quality and shelf life of paper.
Bentonite modifier: It can also be used as a bentonite modifier to improve the dispersibility, wettability, and adhesion of bentonite, and enhance its application effect.
Detailed explanation of application examples
The following is a detailed example introduction of dodecyl trimethylammonium chloride in certain specific application fields:
Oilfield application: When drilling deep wells in oil fields, it can be used as an emulsifier for high-temperature oil in water emulsified mud. It can effectively emulsify oil and water in the mud, form a stable emulsion, improve the dispersibility and stability of the mud, prevent mud stratification and precipitation at high temperatures, thereby protecting the wellbore and drill bit, and improving drilling efficiency.
Penicillin fermentation process: In the production process of penicillin fermentation, it can be used as a protein coagulant. It can bind with proteins in the fermentation broth to form precipitates, thereby removing impurities and harmful substances from the fermentation broth and improving the purity and yield of penicillin.
Building waterproof coatings: By utilizing emulsifying properties, building waterproof coatings can be produced. This coating has good waterproof performance and stability, which can effectively prevent moisture from penetrating into the interior of buildings, protecting the structure and safety of buildings.
Hair conditioner: In hair conditioners, as emulsifiers and softeners, it can help hair absorb and retain moisture, making hair softer and smoother. At the same time, dodecyltrimethylammonium chloride can also reduce friction and static electricity between hair, prevent hair tangling and splitting, and improve the glossiness and elasticity of hair.
Dodecyltrimethylammonium chloride (DTAC) is a versatile surfactant with a wide range of industrial applications, from antimicrobial agents to catalysts. Its chemical stability, emulsifying power, and antimicrobial efficacy make it essential in fields such as healthcare, agriculture, and manufacturing. However, due to its environmental toxicity and persistence, careful handling and disposal are required. As research advances, sustainable alternatives and advanced purification technologies are expected to reduce DTAC's ecological footprint while maintaining its functional benefits. Balancing innovation and environmental protection will be key to harnessing DTAC's potential for a safer, cleaner future.
FAQ
What is the formula for dodecyl trimethylammonium chloride?
+
-
Dodecyltrimethylammonium chloride | C15H34N.Cl | CID 8152 - PubChem.
What is trimethylammonium chloride used for?
+
-
Trimethylammonium Chloride forms a deep eutectic solvent with urea, ethylene glycol, glycerol, and many other compounds. Trimethylammonium Chloride is also used as a clay control additive in fluids used for hydraulic fracturing.
Hot Tags: dodecyltrimethylammonium chloride cas 112-00-5, suppliers, manufacturers, factory, wholesale, buy, price, bulk, for sale, P Terphenyl CAS 92 94 4, Sodium Isopropyl Xanthate SIPX , 1-Dodecanethiol, 3-Chloropropyltrimethoxysilane, Octocrylene Liquid, Dodecyltrimethylammonium chloride