The Fundamentals of Best Price N N Dimethylaniline: Characteristics, Standards, and Performance

Types of Dimethylaniline and Related Derivatives

Dimethylaniline (N,N-dimethylaniline) is an organic compound derived from aniline, where two methyl groups are attached to the nitrogen atom. It is a tertiary aromatic amine widely used in the synthesis of dyes, pharmaceuticals, and chemical reagents. While true dimethylaniline refers specifically to N,N-dimethylaniline, several structurally related derivatives are often discussed in chemical contexts. Below is a detailed overview of key dimethylaniline variants and their chemically related compounds.

N,N-Dimethylaniline (Primary Form)

The foundational compound with the formula C₆H₅N(CH₃)₂, featuring two methyl groups bonded to the nitrogen of aniline.

Key Properties

• Colorless to pale yellow liquid
• Pungent, amine-like odor
• Boiling point: ~194°C
• Moderate solubility in water, high in organic solvents
• Used in dye and rubber chemical production

Handling Notes

• Flammable and combustible
• Toxic if inhaled or absorbed
• Sensitive to light and air (oxidizes to colored impurities)
• Requires careful storage under inert atmosphere

Primary Use: Chemical intermediate in industrial synthesis

N,N-Dimethyl-4-bromoaniline

A halogenated derivative where a bromine atom is substituted at the para (4-) position of the aromatic ring.

Advantages

• Enhanced reactivity for cross-coupling reactions (e.g., Suzuki)
• Used in pharmaceutical and agrochemical synthesis
• Stable crystalline solid at room temperature

Limitations

• Higher molecular weight and cost
• Requires careful handling due to bromine content
• Limited solubility in polar solvents

Best for: Organic synthesis, medicinal chemistry intermediates

N,N-Dimethyl-3-aminobenzoic Acid

This compound combines a tertiary amine with a carboxylic acid functional group at the meta position, offering dual reactivity.

Features

• Amphoteric nature (can act as acid or base)
• Useful in peptide coupling and functional material design
• Soluble in basic aqueous solutions

Challenges

• Potential for zwitterion formation
• Lower stability in acidic environments
• Complex purification due to polarity

Application: Specialty chemical synthesis, polymer modifiers

N,N-Dimethyl-4-aminobenzoic Acid Methyl Ester

A methyl ester derivative of 4-aminobenzoic acid with dimethylamino substitution, commonly used in UV absorbers and local anesthetics.

Benefits

• Enhanced lipophilicity for biological applications
• Key intermediate in benzocaine analogs
• Improved solubility in organic media

Drawbacks

• Hydrolyzable under strong acidic or basic conditions
• May degrade upon prolonged light exposure
• Requires controlled storage conditions

Used in: Pharmaceutical development, sunscreen agents

All these compounds share common characteristics such as aromatic ring structures, tertiary amine functionality, and moderate to high solubility in organic solvents like ethanol, ether, and chloroform. They are generally colorless when pure but may discolor upon exposure to air due to oxidation. Most are flammable liquids or combustible solids with distinct amine odors and require proper ventilation and protective handling.

Expert Tip: When working with dimethylaniline derivatives, always use inert atmosphere (e.g., nitrogen) during storage and reactions to prevent oxidative degradation. Additionally, employ appropriate personal protective equipment (PPE) due to their potential toxicity and skin absorption risks.

Industrial Applications of Dimethylaniline

Dimethylaniline (C₈H₁₁N), also known as N,N-dimethylaniline or DMA, is a versatile organic compound widely used across multiple industrial sectors. Its unique chemical structure—featuring a tertiary amine group attached to a benzene ring—makes it a valuable intermediate and reagent in the synthesis of dyes, pharmaceuticals, agrochemicals, and specialty materials. Due to its electron-donating properties and nucleophilic nature, dimethylaniline plays a pivotal role in various chemical transformations.

Key Industrial Applications

Dyes and Pigments

Dimethylaniline is a foundational building block in the production of synthetic dyes, particularly triphenylmethane dyes such as fuchsine (magenta) and rhodamine B. These vibrant dyes are used in textiles, inks, paper, and biological staining. Historically, the discovery of aniline-based dyes in the 19th century revolutionized the color industry, and dimethylaniline remains a critical component in modern dye chemistry due to its ability to form stable, conjugated chromophores.

The compound undergoes electrophilic substitution reactions to form dye intermediates, enabling the creation of a broad spectrum of colors with high intensity and lightfastness.

Chemical Industry

In industrial chemistry, dimethylaniline serves as both a reagent and reaction intermediate. It acts as a **reducing agent** for nitrogen oxides (NO_x) in emission control processes, helping to mitigate air pollution from combustion sources. Additionally, it functions as a **catalyst or promoter** in the synthesis of heterocyclic compounds—ring-structured molecules that are essential in agrochemicals, dyes, and pharmaceuticals.

Its use in oxidative coupling reactions and as a methylating agent enhances its utility in complex organic syntheses, particularly in fine chemical manufacturing.

Pharmaceuticals

Dimethylaniline is used as a precursor in the synthesis of several pharmacologically active compounds. While dimethylaniline itself is not administered directly as a drug, its derivative—dimethylaniline hydrochloride—has been explored for its bronchodilatory effects in respiratory medicine. It helps alleviate bronchoconstriction by relaxing smooth muscles in the airways, potentially aiding in the management of asthma and chronic obstructive pulmonary disease (COPD).

Moreover, it contributes to the development of local anesthetics and antiseptics through its role in amine-based molecular frameworks, showcasing its importance in medicinal chemistry.

Agricultural Chemicals

In agrochemical manufacturing, dimethylaniline is a key intermediate in the synthesis of pesticides, herbicides, and insecticides. It is particularly valuable in producing **organophosphate compounds** and **aromatic amines**, which serve as active ingredients in crop protection products. These chemicals help control pests, weeds, and pathogens, thereby enhancing agricultural productivity and food security.

Due to its reactivity, it enables the formation of stable, biologically active molecules that target specific pest mechanisms while minimizing environmental persistence when properly formulated.

Plastic and Rubber Manufacturing

Dimethylaniline plays a crucial role as an **accelerator and hardener** in the polymer industry, especially in the curing of epoxy resins. These resins are widely used in high-performance coatings, adhesives, sealants, and composite materials due to their excellent chemical resistance and mechanical strength.

In rubber processing, it can act as a vulcanization accelerator, improving the cross-linking efficiency of sulfur-based systems. This results in enhanced elasticity, durability, and heat resistance of the final rubber products, making them suitable for automotive and industrial applications.

Laboratory Reagent

In analytical and synthetic laboratories, dimethylaniline is employed as a selective **methylating agent** for phenols and other nucleophilic compounds, facilitating the formation of methoxy derivatives. It is also used in colorimetric tests for the detection and quantification of **nitro compounds** and **nitrites** in environmental and biological samples.

One notable application is in the **Ehrlich’s reagent modification**, where dimethylaniline reacts with aldehydes or nitroso compounds to produce vividly colored azo dyes, enabling qualitative and quantitative analysis in spectrophotometry.

Safety and Handling Considerations

Important: Dimethylaniline is a toxic and potentially carcinogenic compound. It can be absorbed through the skin and respiratory tract, causing methemoglobinemia and liver damage. Proper personal protective equipment (PPE), including gloves, goggles, and fume hoods, must be used when handling this chemical. Always consult the Material Safety Data Sheet (MSDS) and adhere to OSHA and EPA guidelines for storage, usage, and disposal. Industrial facilities should implement engineering controls to minimize exposure and ensure environmental compliance.

In summary, dimethylaniline's broad reactivity and functional versatility make it an indispensable compound in modern industrial chemistry. From vibrant dyes to life-saving drugs and high-performance materials, its applications continue to evolve with advancements in chemical engineering and green synthesis technologies.

Product Specifications and Features

Dimethylaniline (DMA), also known as N,N-dimethylaniline, is an organic compound widely used in chemical synthesis, industrial manufacturing, and pharmaceutical applications. Understanding its physical, chemical, and functional characteristics is essential for safe handling, optimal usage, and compliance with regulatory standards.

Key Specifications

Physical Properties

Dimethylaniline is typically found as a colorless to pale yellow liquid, though it may solidify under cooler conditions. It possesses a distinct amine odor—often described as fishy or pungently chemical—common to many aromatic amines.

• Appearance: Colorless to pale yellow liquid (can solidify at lower temperatures)
• Odor: Characteristic amine-like, fishy fragrance
• Density: 0.88–0.90 g/cm³ (lighter than water)
• Boiling Point: 187–193 °C, indicating high thermal stability for a volatile organic compound
• Miscibility: Slightly soluble in water; highly miscible with most organic solvents such as ethanol, ether, and benzene

Safety Note: Its low water solubility means it tends to float on water, increasing environmental dispersion risks if spilled.

Chemical Properties

As a tertiary aromatic amine, dimethylaniline exhibits weak basicity and participates in various electrophilic substitution and alkylation reactions, making it valuable in synthetic chemistry.

• Basicity: Weak base with a pKb of approximately 9.5; limited ionization in aqueous solutions
• Flash Point: ~45 °C, classifying it as flammable—requires careful storage away from ignition sources
• Reactivity: Reacts exothermically with strong acids to form stable salts; can undergo N-methylation to yield N,N,N-trimethylanilinium compounds
• Oxidation Sensitivity: Prone to oxidation upon air exposure, leading to darkening over time—often stored under inert atmosphere or with stabilizers

Handling Tip: Use nitrogen-purged containers for long-term storage to prevent degradation.

Available Grades

Dimethylaniline is manufactured in multiple purity grades tailored to specific industrial, analytical, and research needs. The choice of grade directly impacts performance, safety, and suitability for downstream applications.

• Industrial Grade (≥98% purity): Suitable for bulk dye and pigment production; may contain trace impurities like aniline or water
• Reagent Grade (≥99% purity): Used in laboratories and fine chemical synthesis; meets ACS or equivalent standards
• Ultra-Pure Grade (≥99.5% purity): Employed in pharmaceutical intermediates and sensitive catalytic processes; minimal heavy metals and moisture content
• Custom Specifications: Available with controlled trace elements, stabilized formulations, or solvent-free options upon request

Quality Insight: Higher purity grades reduce side reactions and improve yield in precision syntheses.

Packaging Options

To accommodate diverse user requirements—from small-scale R&D to large-scale manufacturing—dimethylaniline is offered in a range of packaging formats designed for safety, convenience, and regulatory compliance.

• Bulk Packaging: 200-liter steel drums and 1,000-liter IBC totes for industrial users; includes vapor-tight seals and pressure relief valves
• Intermediate Sizes: 25L and 50L cans ideal for pilot plants and medium-volume operations
• Small Containers: 1L and 5L HDPE bottles with tamper-evident caps for lab use; often supplied with secondary containment trays
• Specialty Packaging: Amber glass bottles for light-sensitive applications; nitrogen-flushed options for enhanced shelf life

Storage Advice: Store in a cool, well-ventilated area below 30°C, away from oxidizers and direct sunlight.

Core Features and Applications

Versatile Solvent

Dimethylaniline’s ability to dissolve a broad spectrum of organic compounds makes it a preferred solvent in specialized chemical processes.

• Effective in polymerization reactions and resin formulations due to its polarity and stability
• Used as a reaction medium in the synthesis of dyes, pharmaceuticals, and agrochemicals
• Acts as a phase-transfer agent in multi-phase systems, enhancing reaction kinetics

Application Example: Employed in the production of triphenylmethane dyes where solubility and basicity are critical.

Dye and Chemical Precursor

One of the most significant industrial roles of dimethylaniline is as a building block in the manufacture of dyes, pigments, and functional organic molecules.

• Key intermediate in synthesizing crystal violet, methyl violet, and other triarylmethane dyes used in textiles, inks, and biological staining
• Serves as a precursor in the production of antioxidants, rubber chemicals, and UV stabilizers
• Used in the preparation of charge-transfer complexes and photoconductive materials for electronics

Industry Impact: Over 70% of laboratory-grade DMA is consumed in dye and pigment manufacturing.

Bronchodilator Properties

In pharmaceutical contexts, dimethylaniline hydrochloride—a derivative of DMA—functions as a bronchodilator, aiding in the treatment of respiratory conditions.

• Helps relax bronchial smooth muscles, improving airflow in patients with asthma or bronchitis
• Historically used in combination therapies; modern formulations are carefully dosed due to toxicity concerns
• Requires stringent purification to meet pharmacopeial standards (e.g., USP, EP)

Medical Note: Freebase dimethylaniline is not administered directly; only approved derivatives are used clinically.

Weakly Basic Nature

The moderate basicity of dimethylaniline allows it to act as a mild base or catalyst in organic transformations without causing excessive side reactions.

• Facilitates deprotonation in condensation and elimination reactions
• Used as a buffering agent in electrochemical and analytical applications
• Acts as a ligand in metal-catalyzed reactions, particularly in palladium-mediated couplings

Catalytic Advantage: Its steric bulk and electron-donating ability enhance selectivity in asymmetric synthesis.

Expert Recommendation: When selecting dimethylaniline for sensitive applications—especially in pharmaceuticals or high-purity synthesis—opt for reagent or ultra-pure grades with certified analysis reports. Always verify compatibility with downstream processes and ensure proper ventilation and PPE during handling due to its flammability and potential health hazards. For long-term storage, consider stabilized or nitrogen-sealed packaging to maintain product integrity.

Additional Considerations

• Regulatory Compliance: Listed under various chemical inventories (EINECS, TSCA); subject to safety data sheet (SDS) requirements
• Environmental Impact: Toxic to aquatic life; requires containment and proper disposal per local regulations
• Health Hazards: Can be absorbed through skin; causes irritation to eyes, skin, and respiratory system—use appropriate PPE
• Transportation: Classified as hazardous material (UN 2735, PG II); requires proper labeling and documentation
• Alternative Names: N,N-DMA, DMA, dimethylbenzenamine—ensure correct identification to avoid substitution errors

How to Choose Quality Dimethylaniline: A Comprehensive Buyer’s Guide

Dimethylaniline (DMA), specifically N,N-dimethylaniline, is a vital organic compound used in the synthesis of dyes, pharmaceuticals, agrochemicals, and rubber processing agents. Due to its reactivity and potential health hazards, selecting high-quality dimethylaniline is crucial for ensuring process efficiency, product consistency, and workplace safety. This guide outlines key criteria to evaluate when sourcing dimethylaniline, helping you make informed purchasing decisions that align with your technical and regulatory requirements.

Chemical Safety Notice: N,N-dimethylaniline is a hazardous chemical—harmful if inhaled, swallowed, or absorbed through the skin. It may cause methemoglobinemia and is suspected of causing organ damage with prolonged exposure. Always consult the Safety Data Sheet (SDS) before handling and ensure proper personal protective equipment (PPE), ventilation, and emergency procedures are in place.

Key Factors in Selecting High-Quality Dimethylaniline

1. Purity and Chemical Composition
   • Opt for dimethylaniline with a purity of ≥99% for most industrial and laboratory applications, unless a lower grade is specifically acceptable for your process.
   • Verify the presence and concentration of common impurities such as aniline, methylaniline, water, and residual solvents, which can interfere with reaction yields or product stability.
   • Request a Certificate of Analysis (CoA) from the supplier for each batch, detailing GC (Gas Chromatography) or HPLC (High-Performance Liquid Chromatography) results.
   • Ensure the chemical formula (C₈H₁₁N) and molecular weight (121.18 g/mol) match your specifications to avoid substitution errors.
2. Supplier Credibility and Industry Reputation
   • Choose suppliers with a proven track record in chemical manufacturing or distribution, preferably with ISO 9001 certification for quality management.
   • Look for third-party reviews, client testimonials, or case studies from companies in your sector (e.g., dye manufacturing, pharmaceutical R&D).
   • Verify the supplier’s history of on-time delivery, batch traceability, and responsiveness to technical inquiries.
   • Avoid unknown or unverified vendors, especially when sourcing online, due to risks of adulterated or mislabeled products.
3. Regulatory Compliance and Safety Standards
   • Ensure the product complies with relevant regulations such as REACH (EU), TSCA (USA), and GHS classification for labeling and hazard communication.
   • Confirm that the supplier provides GHS-compliant labeling, including hazard pictograms (e.g., Health Hazard, Acute Toxicity) and precautionary statements.
   • Check compliance with OSHA, EPA, and local environmental and occupational safety regulations for storage and handling.
   • Verify that the chemical is not restricted or banned in your region due to toxicity or environmental impact.
4. Product Consistency Across Batches
   • Demand consistent quality across multiple batches to maintain reproducibility in chemical processes and avoid variability in end-product performance.
   • Inquire about the supplier’s quality control protocols, including raw material sourcing, in-process testing, and final product validation.
   • Request historical CoA data to assess batch-to-batch variation in purity and impurity profiles.
   • Consider entering into a quality agreement with the supplier to formalize consistency expectations and testing requirements.
5. Technical Support and Documentation
   • Choose suppliers who provide comprehensive documentation, including up-to-date Safety Data Sheets (SDS), Material Safety Data Sheets (MSDS), and Certificates of Conformance.
   • Ensure access to detailed handling instructions, compatibility information, and emergency response procedures.
   • Look for suppliers with in-house chemists or technical support teams who can assist with application-specific questions or troubleshooting.
   • Request storage guidelines (e.g., cool, dry, well-ventilated area away from oxidizers) and shelf-life information to maintain chemical integrity.
6. Shipping, Handling, and Packaging
   • Select suppliers experienced in shipping hazardous chemicals, using UN-certified containers and proper secondary containment.
   • Confirm compliance with DOT (Department of Transportation), IATA, or IMDG regulations for domestic and international transport.
   • Ensure packaging materials (e.g., HDPE bottles, steel drums) are chemically resistant and sealed to prevent leaks or vapor release.
   • Verify that the supplier uses temperature-controlled logistics if required and provides tracking for timely delivery.
   • Check insurance coverage and liability policies in case of shipping incidents or product damage.

Expert Tip: Before committing to a large order, request a small sample batch to test for purity, reactivity, and compatibility with your process. This proactive step can prevent costly production issues and ensure the dimethylaniline meets your operational standards.

Additional Recommendations for Safe and Effective Use

• Store dimethylaniline in a tightly sealed container in a cool, dry, and well-ventilated area, away from direct sunlight and incompatible substances like strong oxidizers.
• Implement a first-in, first-out (FIFO) inventory system to avoid using expired or degraded material.
• Train personnel on proper handling procedures, emergency response, and PPE requirements (e.g., nitrile gloves, chemical goggles, respirators).
• Regularly audit your chemical inventory and supplier performance to maintain high safety and quality standards.
• Consider establishing long-term contracts with trusted suppliers to secure pricing stability and consistent quality.

Selecting the right dimethylaniline is more than a procurement decision—it's a critical factor in ensuring process reliability, regulatory compliance, and personnel safety. By evaluating purity, supplier credibility, documentation, and logistics, you can mitigate risks and enhance the efficiency of your chemical operations. When in doubt, consult with a chemical safety officer or technical specialist before finalizing your purchase.

Frequently Asked Questions About Dimethylaniline

Yes, dimethylaniline has a distinct and often strong odor. It is commonly described as having a fishy or amine-like smell, which is typical of many organic nitrogen-containing compounds. This odor can be quite pungent and is noticeable even at low concentrations, serving as a warning property in industrial settings. Prolonged exposure to the vapor may cause respiratory irritation, so proper ventilation and protective equipment are recommended when handling the substance.

For pharmaceutical applications, only high-purity, laboratory-grade or reagent-grade dimethylaniline should be used. This grade undergoes rigorous purification and quality control processes to meet strict standards such as those set by the United States Pharmacopeia (USP), European Pharmacopoeia (Ph. Eur.), or American Chemical Society (ACS). These specifications ensure minimal impurities, heavy metals, and contaminants, making it safe and effective for use in drug synthesis, active pharmaceutical ingredient (API) development, and medical research. Always verify the certificate of analysis (CoA) before using dimethylaniline in any health-related application.

Dimethylaniline poses several health, safety, and environmental hazards:

• Skin and Eye Contact: It is a severe irritant and can cause chemical burns, dermatitis, or permanent eye damage upon contact.
• Inhalation Risk: Breathing in its vapors may lead to respiratory distress, headaches, nausea, and central nervous system depression.
• Ingestion: Toxic if swallowed; can result in methemoglobinemia, a condition that reduces oxygen delivery in the blood.
• Environmental Impact: It is harmful to aquatic life and can persist in the environment, requiring careful disposal in accordance with local regulations.
• Flammability: Although not highly flammable, it can ignite under high heat or flame exposure and should be stored away from ignition sources.

Due to these risks, appropriate personal protective equipment (PPE), including gloves, goggles, and respirators, should always be used when handling dimethylaniline.

While dimethylaniline itself is not used therapeutically, its derivative—dimethylaniline hydrochloride—has been explored in medical contexts for its potential bronchodilatory effects. It works by relaxing the smooth muscles of the airways, thereby reducing bronchoconstriction and improving airflow in patients with respiratory conditions such as asthma or chronic obstructive pulmonary disease (COPD). However, its clinical use is limited and largely experimental or historical, having been superseded by safer, more effective modern bronchodilators like beta-agonists and anticholinergics. Any medical application must be conducted under strict regulatory and clinical supervision due to the compound's inherent toxicity.

Yes, dimethylaniline is a highly regulated chemical due to its toxicological profile and environmental impact. Regulatory oversight includes:

• Handling Protocols: Requires use in fume hoods with proper ventilation, along with appropriate PPE such as nitrile gloves, lab coats, and eye protection.
• Storage Requirements: Must be stored in tightly sealed, labeled containers away from oxidizers, acids, and heat sources, preferably in a cool, dry, well-ventilated area.
• Usage Restrictions: Access is often limited to trained personnel in controlled environments such as laboratories or industrial facilities.
• Reporting Obligations: Facilities may be required to report quantities stored or released under environmental safety laws like OSHA (Occupational Safety and Health Administration) and EPA (Environmental Protection Agency) regulations.
• Disposal Guidelines: Must be disposed of as hazardous waste following local, state, and federal guidelines to prevent soil and water contamination.

Compliance with Material Safety Data Sheets (MSDS/SDS) and adherence to GHS (Globally Harmonized System) labeling standards are mandatory for safe and legal handling.