Overview
Pyriminobac-methyl is a selective herbicide primarily used in rice cultivation to control grass weeds, particularly barnyard grass. It belongs to the chemical class of pyrimidinyloxybenzoates and is known for its post-emergence systemic action. The compound is absorbed by both leaves and roots, making it highly effective in weed management without damaging rice crops. Developed in the late 20th century, Pyriminobac-methyl has become a staple in integrated weed management systems in rice-growing regions. Its selectivity and efficacy have made it a preferred choice for farmers aiming to maximize yield while minimizing environmental impact.
Physical and Chemical Properties
Pyriminobac-methyl is a white to light brown crystalline powder with a molecular weight of 363.8 g/mol. It has a melting point of approximately 135-137°C and is slightly soluble in water but more soluble in organic solvents like acetone and methanol. These properties influence its formulation and application methods. The compound's stability under normal storage conditions and its selective action on weeds make it a reliable herbicide. Its systemic nature ensures that it is translocated within the weed, leading to effective control. The chemical's low volatility reduces the risk of drift, enhancing its safety profile.
Main Applications
Pyriminobac-methyl is predominantly used in rice fields to control grass weeds, especially barnyard grass, which competes with rice for nutrients and sunlight. Its post-emergence application allows farmers to target weeds after they have emerged, providing flexibility in weed management schedules. In addition to rice, Pyriminobac-methyl is sometimes used in other crops where selective grass weed control is needed. Its effectiveness and low toxicity to non-target plants make it a versatile tool in agricultural pest management. However, its use is primarily concentrated in rice-growing regions.
Safety and Storage
Pyriminobac-methyl should be handled with care to avoid inhalation, ingestion, or skin contact. Personal protective equipment (PPE) such as gloves, masks, and goggles is recommended during application. The compound should be stored in a cool, dry place away from direct sunlight and moisture to maintain its efficacy. In case of accidental exposure, immediate medical attention is advised. Proper disposal of containers and unused product is essential to prevent environmental contamination. Regulatory guidelines must be followed to ensure safe use and storage.
B2B Procurement Guide
When procuring Pyriminobac-methyl, it is crucial to verify the supplier's compliance with local and international regulations. Certifications such as ISO and Good Laboratory Practice (GLP) can indicate reliability. The reference price ranges from approximately $50 to $100 per kg, depending on purity and supplier. Bulk purchases may offer cost advantages, but quality should not be compromised. Ensure that the product is properly labeled and accompanied by safety data sheets (SDS). Establishing long-term relationships with reputable suppliers can ensure consistent quality and availability.
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