For any professional working with chemical compounds, a thorough understanding of their properties and safety protocols is paramount. 2,3-Dimethylaniline, also known as 2,3-Xylidine (CAS 87-59-2), is a key chemical intermediate with distinct characteristics that influence its handling, storage, and application. This article delves into the crucial chemical properties and safety aspects of this compound, providing valuable insights for researchers, formulators, and procurement specialists.

Chemical and Physical Properties of 2,3-Dimethylaniline

2,3-Dimethylaniline typically presents as a colorless to pale yellow liquid with a characteristic odor. Its molecular formula is C8H11N, and it has a molecular weight of approximately 121.18 g/mol. Key physical properties include:

  • Appearance: Colorless transparent liquid (can darken on exposure to air or light).
  • Melting Point: Approximately 2.5 °C, meaning it is liquid at room temperature.
  • Boiling Point: Around 221-222 °C, indicating its relative volatility.
  • Density: Approximately 0.993 g/mL at 25 °C.
  • Solubility: Slightly soluble in water (around 30 g/L at 20 °C) but miscible with common organic solvents like ethanol and ether.

Chemically, it is an aromatic amine, possessing both amine and aromatic ring functionalities, which makes it reactive and useful in various synthesis pathways. Its stability is generally good under normal conditions, but it is combustible and incompatible with strong oxidizing agents, acids, and certain other reactive chemicals.

Safety Profile and Handling Precautions

2,3-Dimethylaniline is classified as toxic and harmful to the environment. Safety data sheets (SDS) often list hazard codes such as T (Toxic) and N (Dangerous for the environment). Key hazard statements include risks of poisoning if inhaled, swallowed, or absorbed through the skin, and potential for long-term adverse effects on aquatic life. Therefore, stringent safety measures are essential during handling:

  • Personal Protective Equipment (PPE): Always wear appropriate chemical-resistant gloves, safety goggles or a face shield, and protective clothing to prevent skin and eye contact.
  • Ventilation: Handle the substance in a well-ventilated area, preferably under a fume hood, to minimize inhalation exposure.
  • Storage: Store in tightly closed containers in a cool, dry, and well-ventilated place, away from heat, ignition sources, and incompatible materials such as strong oxidizers and acids.
  • Disposal: Dispose of waste material in accordance with local, regional, and national environmental regulations. Avoid release into the environment.

Procurement from Reputable Suppliers

When purchasing 2,3-Dimethylaniline, whether for research or industrial scale, it is crucial to buy from manufacturers or suppliers who provide comprehensive safety data and guarantee product purity. Reputable suppliers, often found through industry directories or specialized chemical platforms, will supply detailed SDS and Certificates of Analysis (CoA). For procurement managers, understanding these safety aspects ensures that appropriate safety measures are implemented at their facility. Inquiring about sample availability for laboratory testing is also a standard practice to verify quality and safety before placing larger orders.

By respecting the chemical properties and adhering to strict safety protocols, 2,3-Dimethylaniline can be effectively and safely utilized in its various industrial and research applications, underscoring the importance of informed handling and responsible sourcing from trusted manufacturers.