2,4,5-Trimethylaniline

Updated: 2026-07-15

Overview

2,4,5-Trimethylaniline is an aromatic amine with a molecular formula of C9H13N. It is primarily used as a chemical intermediate in the synthesis of dyes, pharmaceuticals, and agrochemicals due to its reactive amino group. The compound is typically found as a light yellow to brown liquid and requires careful handling due to its potential toxicity and volatility. This compound is structurally related to aniline, with three methyl groups substituted at the 2, 4, and 5 positions of the benzene ring. Its derivatives are valuable in industrial applications, particularly in the production of colorants and specialized chemicals.

Physical and Chemical Properties

2,4,5-Trimethylaniline is a light yellow to brown liquid with a density of approximately 0.97 g/cm³. It has a boiling point around 235-237°C and is soluble in common organic solvents such as ethanol and ether, though it is only slightly soluble in water. The compound exhibits typical aromatic amine reactivity, making it useful for further chemical modifications. Due to its volatility and potential toxicity, it must be stored in a well-ventilated area away from oxidizing agents and strong acids. The molecular weight is 135.21 g/mol, and its CAS number is 137-17-7.

Main Applications

The primary use of 2,4,5-Trimethylaniline is as an intermediate in the synthesis of dyes, particularly azo dyes, which are widely used in textiles and printing. It also serves as a building block for pharmaceuticals and agrochemicals, where its aromatic amine group is functionalized to create active ingredients. In agrochemicals, it may be used to produce herbicides or pesticides. Its derivatives are also explored in research for potential applications in materials science, such as conductive polymers or specialty coatings.

Safety and Storage

2,4,5-Trimethylaniline is toxic if inhaled, ingested, or absorbed through the skin. Proper personal protective equipment (PPE), including gloves, goggles, and respirators, should be used when handling this compound. It should be stored in a cool, dry, and well-ventilated area, away from incompatible substances like oxidizing agents and acids. Spills should be contained and cleaned up immediately using appropriate absorbents. Safety data sheets (SDS) must be consulted before use, and disposal should comply with local regulations to minimize environmental impact.

B2B Procurement Guide

When procuring 2,4,5-Trimethylaniline, buyers should prioritize suppliers with verified certifications (e.g., ISO, GMP) and request detailed product specifications, including purity levels (typically 98% or higher). Pricing varies depending on quantity and supplier, so obtaining multiple quotes is advisable. Ensure the supplier provides a comprehensive safety data sheet (SDS) and proper packaging to prevent leaks or contamination. For international shipments, verify compliance with transportation regulations (e.g., IMDG, IATA). Long-term contracts may offer cost advantages for bulk purchases.