Source rice paddy pyrazosulfuron-ethyl for weed control, soil treatment, and crop protection

Strategic Sourcing Guide for Rice Paddy Pyrazosulfuron-Ethyl

Procuring pyrazosulfuron-ethyl for rice paddy cultivation requires a disciplined approach that balances chemical efficacy with rigorous supply chain verification. As a selective herbicide, this active ingredient is critical for managing grassy weeds in rice fields without damaging the crop. Buyers must navigate a complex landscape of formulations, from technical concentrates to water-dispersible granules and wettable powders. The following guide outlines the essential technical, compliance, and operational factors necessary for a successful procurement strategy, grounded in the specific attributes observed in the current market.

Technical Specifications and Formulation Variants

The core of any sourcing decision lies in understanding the precise chemical specifications and available formulations. Pyrazosulfuron-ethyl is characterized by a specific molecular structure, with a molecular weight observed at approximately 414.39 g/mol or 414.4 g/mol depending on the specific data source. The chemical formula is identified as C14H18N6O7S. These fundamental properties dictate the solubility and stability of the product. Solubility data indicates a significant variance between water and organic solvents; the substance shows a water solubility of 14.5 mg/l, while solubility in acetone is substantially higher at 31.7 g/l. This low water solubility is a critical factor for buyers when evaluating the efficiency of wettable powder (WP) or water-dispersible granule (WDG) formulations, as it necessitates specific dispersing agents to ensure uniform application.

The market presents a diverse range of formulations tailored to different application needs. Buyers may encounter Technical Concentrates (TC) with purity levels such as 98% TC, which are often used for further processing into end-use products. More common for direct agricultural use are formulations like 10% WP, 20% WP, and 20% WDG. Some listings also reference 10% Wp and 20% Wp standards, indicating variations in concentration that must be matched to the specific weed pressure in the rice paddy. The physical appearance of the product varies; while some batches are described as a white powder, others are listed as liquid formulations, such as 15% OD, 20% OD, or 30% OD. This variation requires buyers to verify the physical state of the product before ordering to ensure compatibility with their existing application equipment.

Compliance, Certification, and Regulatory Verification

In the agricultural chemical sector, compliance is not merely a formality but a prerequisite for market entry and safety. When sourcing pyrazosulfuron-ethyl, buyers must verify that suppliers possess the necessary documentation to support registration and legal distribution. The observed market data highlights several key certifications and documents that should be present. Suppliers frequently provide Material Safety Data Sheets (MSDS) and Certificates of Analysis (COA) to validate the purity and safety profile of the chemical. Additionally, third-party inspection services such as SGS and PSI are often cited as part of the quality assurance process, providing an independent layer of verification regarding the product's composition and packaging integrity.

Beyond product-specific documents, broader quality management certifications are often requested. While specific ISO standards like ISO 9001:2015 are mentioned in background contexts, buyers should explicitly request current certification status from the supplier rather than assuming compliance based on general industry knowledge. The ability of a supplier to "support registration" is a significant advantage, indicating that they can provide the technical data required to register the product in the buyer's target jurisdiction. Buyers must also be aware of the chemical's stability profile; data suggests the product is stable for 2 years when stored under normal conditions. However, verifying the specific storage requirements and shelf-life claims through the COA is essential to ensure the product remains effective upon arrival.

Cost Drivers and Packaging Logistics

The pricing and logistics of pyrazosulfuron-ethyl are influenced by formulation type, packaging volume, and order quantity. The observed market price range is broad, spanning from $0.03 to $100 per unit, which reflects the diversity of product sizes from small laboratory samples to bulk industrial drums. The Minimum Order Quantity (MOQ) also varies significantly, ranging from 1 unit to 2000 units. This flexibility allows buyers to scale their procurement based on immediate needs, though larger orders typically yield better unit economics.

Packaging is a critical cost and safety driver. Standard packaging options include 25 kg bags, 200-liter drums, and various smaller containers such as 1 kg, 5 kg, or even smaller units like 100g or 50g in colorful aluminum packaging for smaller-scale or sample applications. For liquid formulations, packaging may include 1L, 500ml, or 250ml aluminum, coex, or HDPE bottles. The choice of packaging affects the total landed cost due to weight, volume, and potential damage risks. Buyers should evaluate whether the supplier offers customized packaging to optimize shipping efficiency or meet specific local regulatory labeling requirements. The origin of the product, primarily identified as China or specifically Shanghai, also influences logistics costs and lead times, which buyers must factor into their total cost of ownership calculations.

Typical Applications and Usage Protocols

Understanding the application profile of pyrazosulfuron-ethyl is vital for ensuring efficacy in rice paddy environments. The product is classified as a selective herbicide, designed to target specific weed species while sparing the rice crop. However, some market listings also describe it with "non-selective" attributes, which presents a contradiction that buyers must resolve through direct supplier verification. The primary method of application involves cauline leaf treatment and soil treatment agents. This dual mode of action allows the herbicide to be applied either as a foliar spray or as a soil-applied treatment, providing flexibility in weed management strategies.

The specific conductivity of the product is noted in some contexts as related to "The Herbicide Transmitting" or "The Tag Type Herbicides," suggesting specific mechanisms of translocation within the plant. For rice paddy applications, the ability of the chemical to move through the soil and be absorbed by the roots or leaves is crucial. Buyers should verify the recommended application rates and timing with the supplier's technical data sheet. The stability of the product under normal storage conditions (2 years) ensures that it remains effective when applied according to the recommended schedule, provided that the storage environment is maintained correctly.

Supplier Evaluation and Quality Control

Evaluating potential suppliers requires a multi-faceted approach that goes beyond price comparison. The origin of the product is a primary indicator, with the majority of listings pointing to China, and specifically Shanghai, as the manufacturing hub. Buyers should verify the specific location of the manufacturing facility to assess logistical feasibility and potential trade barriers. Furthermore, the presence of inspection services like SGS and PSI is a strong indicator of a supplier's commitment to quality control. These third-party inspections should be requested for every batch to ensure consistency in the active ingredient concentration and the absence of harmful impurities.

Quality control should also extend to the physical attributes of the product. Buyers must confirm that the appearance (powder vs. liquid) and color (white) match the ordered specifications. Discrepancies in the melting point, which is observed between 177.8°C and 182°C, or the density, noted at 1.440 g/cm³ at 20°C, can indicate degradation or formulation errors. The pKa value of 3.7 is another chemical parameter that influences the solubility and absorption characteristics of the herbicide. Suppliers should be able to provide batch-specific data for these parameters to ensure the product meets the required technical standards.

Long-Term Procurement Considerations

Sourcing pyrazosulfuron-ethyl is not a one-time transaction but a long-term partnership that requires careful management of supply chain risks. The availability of customization options, such as customized packages and support for registration, suggests that suppliers are willing to adapt to the specific needs of their clients. This flexibility is essential for buyers looking to establish a stable supply chain. However, buyers must remain vigilant regarding the potential for conflicting product attributes in the market, such as the dual classification of selective and non-selective usage. Clear communication and written confirmation of the product's intended use are necessary to avoid application errors that could damage the rice crop.

Furthermore, the stability of the product over a 2-year period under normal conditions provides a buffer for inventory management, but buyers should still implement a first-in, first-out (FIFO) system to ensure the oldest stock is used first. The broad range of packaging options allows for strategic inventory planning, enabling buyers to order smaller quantities for immediate use while maintaining larger stockpiles for future seasons. By focusing on suppliers who offer comprehensive documentation, including MSDS, COA, and third-party inspection reports, buyers can mitigate the risks associated with chemical procurement and ensure a reliable supply of high-quality pyrazosulfuron-ethyl for their rice paddy operations.

Comparative Overview of Product Attributes

To assist in the decision-making process, the following table summarizes the key attributes observed in the market for pyrazosulfuron-ethyl. This comparison highlights the variability in formulations and specifications that buyers must navigate.

This table underscores the importance of verifying specific product details before placing an order. The variations in formulation, appearance, and usage classification necessitate a thorough review of the supplier's technical data sheets to ensure the product aligns with the buyer's specific agricultural requirements. By adhering to these guidelines, buyers can effectively source pyrazosulfuron-ethyl that meets both regulatory standards and agronomic needs.