2,4-Diaminotoluene (CAS 95 - 80 - 7) is an important organic compound. It appears as a light - colored crystalline solid at room temperature. The molecular formula of 2,4 - Diaminotoluene is C₇H₁₀N₂, and its molecular weight is approximately 122.17 g/mol. The melting point of this compound is around 97 - 99 °C, and the boiling point is about 280 - 290 °C. It has a certain solubility in organic solvents such as ethanol and ether, while its solubility in water is relatively low. This high - quality 2,4 - Diaminotoluene is produced with strict quality control to ensure its purity and performance.
2,4 - Diaminotoluene has a wide range of applications in various industries. In the chemical industry, it is a key intermediate for the synthesis of many dyes and pigments. It can be used to produce azo dyes, which are known for their bright colors and good color fastness. These dyes are widely used in the textile industry for dyeing cotton, wool, and synthetic fibers.
Another important application is in the production of polyurethanes. It can react with diisocyanates to form polyurethane polymers. Polyurethanes are used in a variety of products, such as foam materials for furniture and automotive upholstery, coatings for protecting metal surfaces, and adhesives for bonding different materials together.
In addition, 2,4 - Diaminotoluene can also be used in the pharmaceutical industry as a raw material for the synthesis of some drugs. It may participate in the synthesis of compounds with antibacterial, antifungal, or anti - inflammatory properties.
When using 2,4 - Diaminotoluene, proper safety precautions should be taken. It should be stored in a cool, dry, and well - ventilated place, away from sources of ignition and oxidizing agents. When handling this compound, it is recommended to wear appropriate personal protective equipment, including gloves, safety goggles, and a lab coat.
For laboratory use, accurate weighing is required according to the experimental protocol. It can be dissolved in suitable organic solvents under stirring for further chemical reactions. In industrial production, the reaction conditions such as temperature, pressure, and reaction time need to be carefully controlled to ensure the quality and yield of the final products.
Textile Dyeing Case: A textile factory in Asia planned to produce a new line of red - dyed cotton fabrics. They used 2,4 - Diaminotoluene as an intermediate to synthesize a specific azo dye. First, they dissolved 2,4 - Diaminotoluene in ethanol and carried out a series of chemical reactions to form the dye precursor. After purification and further processing, the final azo dye was obtained. The dyeing process involved immersing the cotton fabrics in a dye bath containing the synthesized dye at a specific temperature and pH value for a certain period of time. The result was high - quality red - dyed cotton fabrics with excellent color fastness, which were well - received in the market.
Polyurethane Foam Production Case: A furniture manufacturing company wanted to produce high - performance polyurethane foam for sofa cushions. They used 2,4 - Diaminotoluene in combination with a diisocyanate to synthesize the polyurethane polymer. The reaction was carried out in a large - scale reactor under controlled temperature and pressure conditions. By adjusting the ratio of 2,4 - Diaminotoluene and the diisocyanate, they were able to produce polyurethane foam with the desired density, elasticity, and durability. The sofa cushions made from this foam provided comfortable seating and had a long service life.
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