For procurement managers and R&D scientists in the agrochemical and fine chemical industries, understanding the specifications and applications of key intermediates is vital. 3-Chloro-4-methylphenyl Isocyanate, identified by CAS number 28479-22-3, is one such critical compound. This article serves as a practical guide for those looking to buy or understand this versatile chemical.

The primary utility of 3-Chloro-4-methylphenyl Isocyanate lies in its role as an essential intermediate for synthesizing Chlorotoluron, a widely recognized herbicide. This means that manufacturers producing Chlorotoluron, or formulating end-use products containing it, will source this isocyanate. When you are looking to purchase this chemical, understanding its specifications is the first step to ensuring it meets your production requirements. Key specifications typically include:

• Assay/Purity: This is perhaps the most critical factor. For agrochemical applications, a high purity is generally required, often stated as ≥99.0%. This ensures that the downstream synthesis proceeds efficiently and the final product meets quality standards.
• Appearance: The product is usually described as a white to light brown solid. Variations in color might indicate different manufacturing processes or slight differences in purity, so consistency is key.
• Loss on Drying: This parameter indicates the moisture content, which is important for the stability and reactivity of isocyanates. A low Loss on Drying (e.g., ≤0.5%) is desirable.
• CAS Number: 28479-22-3 is the unique identifier for this chemical, crucial for accurate ordering and regulatory compliance.

Beyond its use in Chlorotoluron, 3-Chloro-4-methylphenyl Isocyanate's reactive isocyanate group allows it to be a building block for other potential agrochemical compounds and fine chemicals. Researchers exploring new pesticides or specialty chemicals might find this compound a valuable starting material for their synthesis projects.

When you decide to buy 3-Chloro-4-methylphenyl Isocyanate, consider the supplier carefully. Reputable manufacturers and suppliers, particularly those operating from China, often offer competitive pricing and flexible packaging solutions. Standard packaging typically involves 25kg drums, but it is advisable to confirm if custom packaging is available to suit your specific handling and storage needs. Engaging with a supplier that can provide consistent quality, reliable delivery, and good customer support is paramount for seamless integration into your production workflow.

In summary, purchasing 3-Chloro-4-methylphenyl Isocyanate requires a clear understanding of its purity requirements and its primary application in herbicide synthesis. By focusing on these key specifications and selecting a trustworthy supplier, chemical buyers can secure the essential materials needed for successful agrochemical production and innovation.