Amines C16-18 Alkyldimethyl C16-18 DMA C16-18 Dimethylamine CAS 68390-97-6

Tree Chem C16-18 Alkyldimethylamines CAS 68390-97-6 are manufactured to ensure consistent purity and controlled color for customers who need reliable tertiary amines for surfactant intermediates, anti-static agents, corrosion inhibitors, and fatty amine derivatives. This product is a colorless to pale-yellow transparent liquid with well-controlled amine value and low secondary-amine content.

In downstream applications, Tree Chem supports long-term supply projects with stable specifications, documentation support, and impurity-controlled production. For quotations or technical consultation, feel free to contact info@cntreechem.com.

Спецификация

Основная информация

Технические характеристики

Приложения

Metal Extraction and Separation

• Octadecyl/hexadecyl dimethyl tertiary amine is predominantly used in metal extraction processes where its strong hydrophobic tertiary-amine structure enables selective complexation of metal anions in chloride or sulfate media. In cobalt–nickel separation, the amine forms stable complexes with CoCl₄²⁻ anions in concentrated hydrochloric acid systems, allowing efficient transfer into the organic phase while nickel remains in the aqueous phase. Industrial operations enhance extraction by raising chloride concentration, improving loading capacity and minimizing interference from alkaline-earth impurities. These characteristics make the amine a core component in hydrometallurgical circuits for nonferrous metals.
• In uranium extraction systems, octadecyl/hexadecyl dimethyl tertiary amine demonstrates high extraction efficiency and large saturation capacity in sulfate solutions. Even at uranium concentrations near two grams per liter, its distribution coefficient remains high, supporting extraction rates above ninety-six percent. This performance extends to other rare metals including tungsten, molybdenum, vanadium, platinum, and gold, enabling recovery across a wide range of acidic leach solutions used in modern ore-processing flows. Its compatibility with P204 and P507 extraction agents allows synergistic systems to be formed for high-purity rare-earth separation.
• The amine also delivers strong performance in treating industrial wastewater containing heavy metals. Its tertiary-amine structure facilitates selective binding of metal species in acidic waste streams, enabling transfer to an organic phase where metals can be concentrated and removed. This supports effluent purification, resource recovery, and compliance with environmental regulations. Its stability in corrosive aqueous environments further expands its utility in waste-management operations for electronics, metallurgy, and mining industries.

Pharmaceutical Applications

• Octadecyl/hexadecyl dimethyl tertiary amine serves as an intermediate and catalytic auxiliary in pharmaceutical synthesis where multiphase reaction environments require efficient transfer of hydrophobic reactants. In the synthesis of quinolone antibiotics such as ciprofloxacin and norfloxacin, it functions as a phase-transfer catalyst that accelerates nucleophilic substitution steps and enhances yields. By improving mass-transfer efficiency, the amine shortens reaction time and increases overall conversion, especially in chloride-containing systems where hydrophobic intermediates benefit from tertiary-amine mediation.
• In cardiovascular-drug synthesis, the amine provides catalytic support for the preparation of intermediates used in ACE inhibitors like captopril or enalapril. It improves reaction selectivity and facilitates formation of key side-chain structures. For dihydropyridine calcium-channel blockers, the amine contributes to stereochemical control and more stable reaction pathways. These advantages enable cleaner synthesis routes with better control of optical purity.
• The amine can also act as a chiral auxiliary or catalytic promoter for antiviral-drug intermediates where selectivity and optical purity are critical. By providing both hydrophobic partitioning and tertiary-amine basicity, it assists in achieving high-purity intermediates used in advanced synthetic routes. Its compatibility with acidic and basic reaction conditions also makes it suitable for diverse pharmaceutical processes requiring robust reaction control.

Личная гигиена

• Octadecyl/hexadecyl dimethyl tertiary amine acts as a key functional ingredient in personal-care formulations where softening, conditioning and antimicrobial effects are required. Its long alkyl chain and tertiary-amine head enable the molecule to migrate to hair or skin surfaces, forming a thin hydrophobic film that improves softness and manageability of hair while reducing static and friction during combing. In rinse-off and leave-on hair-care systems, this amine provides cationic fixation of hydrophobic actives and helps maintain product stability under repeated use and rinsing. Furthermore, its quaternary derivatives are incorporated in conditioners and after-shampoos to deliver detangling, antistatic and anti-microbial benefits in one formulation.

Surfactant Industry

• In the surfactant sector, octadecyl/hexadecyl dimethyl tertiary amine serves as a versatile precursor for cationic, non-ionic and amphoteric surfactants. Upon quaternization it yields strong cationic detergents used in fabric softeners, cleaning agents and antimicrobial systems. Ethoxylation of the amine produces non-ionic surfactants with adjustable hydrophile-lipophile balance suitable for detergents, emulsifiers and wetting agents. Additionally, the amine can be transformed into betaine and imidazoline derivatives that perform as amphoteric surfactants with excellent pH stability and compatibility in complex formulations such as shampoo, industrial cleaners and enhanced-oil-recovery fluids.

Текстильная промышленность

• Within textile processing, octadecyl/hexadecyl dimethyl tertiary amine and its derivatives are widely used as antistatic agents, softeners and finishing aids. The cationic derivatives adhere strongly to negatively charged fiber surfaces, reducing surface resistivity, preventing static build-up and improving fiber handling during weaving, knitting and finishing. Moreover, amide and quaternary ammonium derivatives from this amine serve as levelling agents and wetting agents in dyeing processes, ensuring uniform colour distribution and enhanced dye penetration. For leather finishing, its derivatives impart improved softness, water-resistance and durability to coated or treated hides and textiles.

Petrochemical and Oilfield Applications

• In the petrochemical realm, octadecyl/hexadecyl dimethyl tertiary amine is applied as a corrosion inhibitor, emulsifier and alkali-regulator in drilling fluids, acidizing treatments and enhanced-oil-recovery (EOR) systems. Its tertiary-amine head enables adsorption to metal surfaces, forming protective films under acidic or high-salinity conditions typical of oil-field operations. As an emulsifier, it stabilizes oil-water dispersions in drilling and completion fluids, enhancing lubrication, filtrate control and proppant transport. In EOR applications the amine aids surfactant packages to reduce interfacial tension and promote oil mobilization from porous formations.

Хранение и обработка

• Store in tightly sealed containers.
• Keep away from heat and direct sunlight.
• Avoid contact with strong oxidizers or acids.
• Ensure equipment is clean and moisture-free.
• Use grounding to prevent static discharge.

Уведомление об использовании

• Avoid direct skin or eye contact; use protective equipment.
• Ensure adequate ventilation during handling.
• Prevent contamination with moisture, acids, or oxidants.
• Emulsifier formulation for surfactant systems uses 18/16 DMA at 10–50% with water as the main solvent to provide strong surface activity and wetting performance.
• Anionic surfactant neutralization systems contain 18/16 DMA at 10–30% to improve emulsification, temperature resistance and compatibility with anionic surfactants.
• Nonionic surfactant systems incorporate 18/16 DMA with stearic acid and KOH to create HLB values adjustable between 8 and 15 for controlled emulsification behavior.
• Personal-care hair-conditioner formulations include 1–3% 18/16 DMA with 1831/1631 emulsifiers and minor silicone components to improve hair smoothness and moisture retention.
• Shampoo formulations use 0.2–0.5% 18/16 DMA with 17.14% AES, glycols and conditioning agents to solve post-wash dry-feel issues.
• Body-wash formulations incorporate 2–3% 18/16 DMA with K12 8%, AES 12%, CAB 3% and OA-18 2% to enhance foam richness, skin feel and cleansing power.
• Textile softener formulations include 6–15% 18/16 DMA with DB1821 15% and ester quaternary ammonium compounds to increase softness by more than fifty percent.
• Textile antistatic formulations use 0.5–2% 18/16 DMA to reduce fabric surface resistivity to the 10¹⁰–10⁹ Ω range.
• Textile leveling-agent formulations include 2–5% 18/16 DMA with 1827 and nylamine compounds to improve leveling uniformity above ninety-five percent.
• Oilfield bactericide formulations use 18/16 DMA at 15–25% with glutaraldehyde and isothiazolinone to achieve sterilization efficiency above ninety-two percent.
• Oilfield corrosion-inhibitor formulations include 0.1–0.5% 18/16 DMA with thiourea and thioglycolate salts to reach corrosion-resistance rates exceeding ninety-five percent.
• Metal-processing cutting-fluid formulations use 2–5% 18/16 DMA with mineral oil, sulfur and chlorine additives to provide lubrication and corrosion-resistance in integrated machining fluids.
• Metal-processing rust-preventive formulations incorporate 5–10% 18/16 DMA with oil-soluble amines and triazoles to achieve rust-prevention periods longer than thirty days.
• Rubber-vulcanization-accelerator formulations apply 0.5–2% 18/16 DMA with thiourea and zinc compounds to increase vulcanization speed by twenty to thirty percent.
• Electronic-materials photoinitiator formulations include 0.005–0.01 g of 18/16 DMA per 5 g of resin to improve curing rate and enhance light-curing film strength.
• New-energy lithium-battery electrolyte formulations use 0.1–2% 18/16 DMA with borates and organic ammonium salts to enhance battery safety and cycling performance.

Упаковка

• 160 kg/drum
• 1000 L IBC drum
• Customized packaging available upon request.