N,N-Dimethyloctadecylamine C18-DMA Octadecyldimethylamine CAS 124-28-7

Tree Chem manufactures N,N-Dimethyloctadecylamine CAS 124-28-7 for customers looking to purchase long-chain tertiary amines with stable quality and controlled impurities. This product features excellent purity, high C18 selectivity, and clean color profile suitable for use in surfactant production, personal-care formulations, textile finishing agents, and various industrial intermediates.

As a C18 tertiary amine, it offers excellent behavior in quaternization and emulsification processes, making it ideal for producing quats, conditioning agents, corrosion inhibitors, and fabric softener intermediates. Its performance consistency ensures stable downstream reaction profiles. For cooperation or quotations, please contact info@cntreechem.com.

Especificación

Información básica

Especificación técnica

Additional Grade Available:

Tree Chem also provides high-purity C18 tertiary amine with 99.9% tertiary amine content. Please specify your requirement before ordering.

Aplicaciones

Surfactant Industry

• Octadecyl Dimethyl Tertiary Amine (DMA18, 1821) is widely used as a fundamental intermediate for cationic, amphoteric and nonionic surfactants, representing a major share of its downstream consumption. Through quaternization with chloromethane or benzyl chloride under controlled ratios, DMA18 produces quaternary ammonium salts such as 1831, 1827, D1821 and 1831B, providing conditioning, antistatic, softening and antibacterial effects required in home-care and textile applications. Process parameters such as amine-to-alkylating-agent ratio near 1:1.05–1.1 and water-to-amine mass ratio around 2.5–3.5 are key to achieving good purity and conversion.
• DMA18 also serves as a precursor for amphoteric surfactants. Betaine derivatives are synthesized by reacting DMA18 with sodium chloroacetate in aqueous medium at elevated temperatures, producing mild surfactants suitable for premium cleansing systems. Amine oxides are formed through controlled oxidation in alcohol media to obtain OA-18, used for viscosity build and foam stabilization. Nonionic surfactant grades arise from ethoxylation, providing adjustable HLB values from 8 to 15 and broad compatibility across detergency, emulsification and dispersion needs.

Cuidado personal

• DMA18 plays an important role in conditioning and cleansing formulations through its quaternary derivatives. In conditioners, combinations of 1831 or 1631 with fatty alcohols, silicone emulsions and humectants create cationic films that adsorb to hair fibers, improving manageability, smoothness and moisture retention. These systems reduce friction during wet and dry combing and enhance overall sensory feel.
• In shampoo formulations, DMA18-based cationics improve conditioning while coexisting with anionic surfactants, stabilizing foam and addressing dryness associated with chemical treatments. In body-wash products, OA-18 contributes to viscosity, foam richness and a mild skin feel when balanced with AES, K12 and amphoteric CAB. In antibacterial hand-wash formulas, benzyl-quats derived from DMA18 provide broad-spectrum antimicrobial support at low dosages.

Textile Industry

• DMA18 is a key component in softeners, antistatic agents and leveling auxiliaries for textile processing. Softener emulsions based on D1821 and amino-silicone systems form flexible films on fibers, improving softness, drape and wrinkle recovery while maintaining stability in both dilute and concentrated applications. Antistatic formulations built from DMA18 quaternary salts significantly reduce surface resistivity of synthetic fibers, supporting smooth processing during spinning, weaving and finishing.
• Leveling agents for acid dyes and cationic dyes rely on DMA18 benzyl quats combined with nonionic assistants to delay dye uptake and improve uniformity. These systems achieve high leveling rates on acrylic, wool and other fibers. DMA18 derivatives are also used in fixing agents, foam-control agents and silicone-compatible softeners that enhance fastness and overall textile performance.

Petrochemical and Oilfield

• DMA18 derivatives appear in biocides, corrosion inhibitors, emulsifiers and demulsifier packages across oilfield operations. In water-treatment and injection systems, benzyl quats combine with glutaraldehyde or isothiazolinone to ensure microbial control. Acid-pickling inhibitors containing DMA18 protect metal surfaces in strong-acid conditions, improving integrity during pipeline and equipment maintenance.
• In enhanced-oil-recovery systems, DMA18 surfactants and co-surfactants reduce interfacial tension to mobilize trapped oil. Drilling-fluid formulations employ DMA18 for emulsification, lubrication and shale inhibition. Demulsifier packages built with DMA18-POE ethers accelerate crude-oil dehydration, improving separation efficiency in production operations.

Metalworking

• DMA18 functions as an emulsifier, corrosion inhibitor and alkalinity regulator in synthetic and semi-synthetic metalworking fluids. In fully synthetic fluids, combinations with triethanolamine, borates and azoles provide lubrication, cooling stability and long-term rust protection. In semi-synthetic fluids, DMA18 stabilizes emulsions with mineral oils and fatty esters, improving machining performance and fluid longevity.
• Rust-preventive oils incorporate DMA18 with sulfonates, borate esters and protective amines to extend storage life of ferrous metals. These blends create robust protective films and maintain stability in humid and variable environments.

Rubber Industry

• DMA18 is used as a vulcanization accelerator component and as an intermediate for antioxidants in rubber compounding. When combined with carbon disulfide and alkali, DMA18 increases vulcanization speed and enhances crosslink density, improving tensile strength and processing efficiency.
• In latex systems, small amounts of DMA18 help maintain dispersion stability, preventing premature coagulation during storage, transport and mixing. The amine’s compatibility with nonionic assistants also supports uniform film formation and controlled viscosity.

Electronic Materials

• DMA18 serves as an intermediate in liquid-crystal material synthesis and as a functional additive in photoresist formulations. In photoresist systems, a controlled low dose of DMA18 acts as a base quencher that regulates acid diffusion, improving pattern resolution and edge definition during lithography.
• DMA18-containing precision-cleaning formulations remove organic residues from sensitive components with minimal metal attack. In high-purity electronic-material production, impurity control and particle-size stability are maintained to meet stringent process requirements.

New Energy and Other Uses

• DMA18 is used in lithium-ion battery electrolyte formulations at low dosages to enhance conductivity, cycling stability and low-temperature performance. It also appears in flotation collectors for non-ferrous ore beneficiation, where combinations with fatty acids and sulfonates improve recovery efficiency.
• Additional applications include pigment dispersion, polyurethane catalysis, and asphalt-emulsion systems in road construction, where DMA18 quaternaries provide emulsification and long-term stability.

Almacenamiento y manipulación

• Store in tightly sealed containers.
• Keep away from heat and direct sunlight.
• Avoid contact with strong oxidizers and acids.
• Ensure all equipment remains dry and clean.
• Ground containers and equipment to prevent static discharge.

Aviso de uso

• Recommended to handle under dry, ventilated conditions.
• Avoid prolonged exposure to air to prevent oxidation.
• Pre-heat slightly if viscosity increases at low temperature.
• Use appropriate protective wear when handling.
• Check compatibility before blending with reactive chemicals.
• Cationic surfactant synthesis uses DMA18 with chloromethane in aqueous medium to produce 10–50% active quaternary ammonium salts for conditioning and antimicrobial performance.
• Amphoteric betaine preparation reacts DMA18 with sodium chloroacetate and sodium hydroxide in water at elevated temperature to form mild foaming surfactants.
• Amine-oxide surfactant production oxidizes DMA18 with hydrogen peroxide in alcohol solution at controlled temperature to obtain OA-18 for viscosity build and foam stabilization.
• Nonionic surfactant production ethoxylates DMA18 under alkaline catalysis with 5–30 EO units to yield emulsifiers with adjustable HLB values from 8 to 15.
• Conditioner formulation uses 1831 or 1631 with fatty alcohols, silicones and humectants in water to improve hair smoothness and wet-comb performance.
• Shampoo formulation includes AES, conditioning polymers, silicone emulsions, CAB and carbomer with DMA18 derivatives to address post-treatment dryness.
• Hair-mask formulation blends 1831 with PVA, glycerin, oils, cetearyl alcohol, emulsifiers and silicones to achieve deep repair and conditioning.
• Body-wash formulation uses K12, AES, CAB and OA-18 with humectants and fragrance to enhance foam richness and skin feel.
• Hand-wash formulation employs low-dosage benzyl quats with APG, amino-acid surfactants, glycerin and ethanol to provide mild antibacterial cleansing.
• Textile softener formulation applies D1821 with amino silicones, sorbitan esters, polyether components and DMA18 derivatives to increase softness by more than fifty percent.
• Textile antistatic formulation uses DMA18 quaternary salts in alcoholic-aqueous medium to reduce fiber surface resistivity to the 10⁸–10⁹ ohm range.
• Textile leveling-agent formulation doses DMA18 benzyl quats with nonionic assistants and acetic acid to achieve dye uniformity above ninety-five percent.
• Fixing-agent formulation contains octadecyl dimethyl ammonium chloride with crosslinkers and acetic acid to improve fabric wash fastness.
• Oilfield biocide formulation uses DMA18 benzyl quats with glutaraldehyde and isothiazolinone to reach sterilization efficiency above ninety-two percent.
• Acid-pickling corrosion-inhibitor formulation includes DMA18 with hexamethylenetetramine, thiourea and hydrochloric acid to achieve more than ninety-five percent corrosion protection.
• Drilling-fluid additive formulation contains DMA18 with asphalt and lime to provide emulsification, lubrication and shale inhibition.
• Oil-soluble corrosion-inhibitor formulation uses DMA18 with benzotriazole and petroleum sulfonates to protect pipelines and tanks at low treatment rates.
• Crude-oil demulsifier formulation blends DMA18-POE ethers with polyethers, glycols and alcohols to accelerate dewatering and separation.
• Synthetic cutting-fluid formulation combines DMA18 with triethanolamine, polyethers, boric acid, nitrite, biocide and defoamer to offer cooling, lubrication and rust prevention.
• Semi-synthetic cutting-fluid formulation uses DMA18 with mineral oil, fatty-acid esters, polyether alcohols, sulfonates, triethanolamine and preservatives to form a stable emulsion with corrosion resistance.
• Rust-preventive formulation includes DMA18 with borate esters, petroleum sulfonates, lanolin soap and inhibitors to provide storage protection exceeding thirty days.
• Rubber vulcanization-accelerator formulation uses DMA18 with carbon disulfide, alkali and water to increase vulcanization speed by twenty to thirty percent.
• Latex stabilizer formulation adds DMA18 with nonionic surfactants and ammonia to prevent coagulation during storage.
• Photoresist-aid formulation doses DMA18 with polymer, solvent and photoacid generators to control acid diffusion and improve lithographic resolution.
• Lithium-battery electrolyte formulation includes DMA18 with electrolyte salts and organic solvents to enhance conductivity and cycling performance.
• Flotation-collector formulation uses DMA18 with fatty acids and petroleum sulfonates to improve ore-recovery efficiency.
• Asphalt-emulsion formulation contains DMA18 quaternary salts with saponin and lime to create stable emulsions for road-construction applications.

Embalaje

• 160 kg steel drum
• Clean, sealed, export-ready packaging