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Pyraclostrobin (CAS 175013-18-0) is a high-performance broad-spectrum fungicide developed by Red Sun, effectively controlling fungal diseases through mitochondrial respiration inhibition. This methoxyacrylate compound offers protective, curative, and translaminar action for comprehensive crop protection.
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Pyraclostrobin (CAS 175013-18-0), meticulously synthesized and developed by Red Sun, stands as a premier broad-spectrum strobilurin fungicide engineered for demanding agricultural environments. Operating by precisely inhibiting mitochondrial respiration within pathogenic fungi, it effectively severs the electron transport chain at the cytochrome bc1 complex, leading to rapid cellular collapse of the pathogen. Beyond its fundamental mode of action, our technical-grade and formulated products leverage advanced processing technologies, including optimized microencapsulation and nano-dispersion techniques. These manufacturing refinements significantly elevate the active ingredient's rainfastness and foliar penetration rates, ensuring the active residue remains firmly bound to the leaf surface even under heavy precipitation. By integrating robust protective, curative, and translaminar properties, this fungicide provides comprehensive disease control. It demonstrates exceptional field efficacy against a vast array of aggressive crop diseases, notably downy mildew, powdery mildew, black spot, and leaf spot, empowering formulators and agricultural producers to achieve superior crop yields, uncompromised harvest quality, and highly efficient disease management cycles.
Parameter | Details |
Molecular Formula | C₁₉H₁₈ClN₃O₄ |
Molecular Weight | 387.817 g/mol |
Exact Mass | 387.098572 |
Density | 1.3 ± 0.1 g/cm³ |
Boiling Point | 501.1 ± 60.0 ℃ at 760 mmHg |
Flash Point | 256.8 ± 32.9 ℃ |
Refractive Index | 1.592 |
Vapor Pressure | 0.0 ± 1.3 mmHg at 25 ℃ |
PSA | 65.82000 |
LogP | 4.25 |
Molar Refractivity | 102.67 |
Molar Volume | 303.4 cm³/mol |
Isotonic Volume | 788.5 at 90.2K |
Surface Tension | 45.6 dyne/cm |
Polarizability | 40.70 (10⁻⊃2;⁴ cm³) |
Storage Conditions | Stable for 2 years at 20 ℃ |
Stability | Photolysis half-life 0.06 d in water |
Pyraclostrobin disrupts fungal respiration by blocking electron transfer in mitochondria at the cytochrome complex, which irreparably damages the cell structure of the fungus. It shows exceptional control against aggressive diseases such as anthracnose, powdery mildew, and leaf spot, drastically reducing fungal survival and spore germination across a wide range of economically significant crops.
The product can be applied at early vegetative stages to prevent disease establishment or immediately after infection to halt mycelial spread. It is highly suitable for cereals, vegetables, fruits, and ornamentals, offering broad, reliable protection across different growth cycles and helping maintain optimal crop health even under high disease pressure environments.
Beyond disease management, Pyraclostrobin activates the natural defense system of plants, producing a documented physiological greening effect that helps them tolerate severe stress from external conditions. Treated crops can sustain normal, vigorous growth under drought, extreme heat, or temperature pressure, significantly reducing physiological damage and ensuring more consistent, predictable yield outcomes.
The product improves overall photosynthetic activity and enhances nitrogen assimilation and nutrient uptake, supplying crops with more vital energy for cellular development. This biological process results in structurally stronger plants, thicker stems, and fuller, more uniform fruits, which directly support higher marketable yields and stable quality in commercial harvests.
Pyraclostrobin optimizes leaf structure by delaying senescence and increases chloroplast activity, which visibly raises the rate and efficiency of photosynthesis. The resulting higher accumulation of biomass supports better crop growth, enhanced fruit development, and extended harvest windows throughout the entire production season.
Pyraclostrobin provides highly effective control against a wide range of major fungal classes, including Ascomycetes, Basidiomycetes, Deuteromycetes, and Oomycetes. It covers dozens of important crop diseases simultaneously and supports consistent, repeatable field performance in multiple complex farming systems.
The product combines protective, curative, and translaminar actions into one precise application. It prevents new spore infections, halts existing mycelial growth, and penetrates deep into leaf tissues to protect untreated surfaces. This integrated approach ensures both immediate intervention and long-lasting residual treatment.
Pyraclostrobin penetrates the waxy cuticle of leaves rapidly and reaches the underside without the need for excessive chemical adjuvants. This unique translaminar property allows thorough, uniform coverage and helps eliminate hidden fungal presence more completely across the entire treated canopy.
The product actively supports crop health by inducing nitrate reductase enzyme activity, delaying ethylene production (senescence), and improving water and nutrient use efficiency. These physiological effects lead to higher yields, better visual grading of harvests, and strengthened resilience of plants during critical growth stages.
To assist formulators in developing new, highly effective products, our Pyraclostrobin exhibits excellent chemical compatibility for tank-mixing and co-formulation. It pairs exceptionally well with triazoles like Tebuconazole or SDHI fungicides like Boscalid. These classic combination formulas not only broaden the fungicidal spectrum but also create a dual-action mechanism that significantly delays the onset of pathogen resistance, offering a strategic advantage for large-scale agricultural operations.
Compared to single-site or older generation fungicides, this compound delivers quantifiable operational benefits. Its stability under extreme UV exposure and temperature fluctuations ensures reliable field performance. Furthermore, its broad tank-mix compatibility reduces the number of required field passes, directly lowering the comprehensive application cost per acre and maximizing the return on investment for commercial farm management.
Red Sun Pyraclostrobin technical material remains chemically stable for up to two years under normal warehouse storage conditions. It shows no phytotoxicity when applied at recommended rates, presents manageable environmental profiles when handled correctly, and can be integrated safely into diverse crop protection programs.
Pyraclostrobin is extensively used to control powdery mildew, downy mildew, black rot, brown rot, and dieback in commercial vineyards. Application is recommended at 100 g/hm², repeated 5–7 times with a strategic interval of 12–14 days to maintain a continuous protective barrier over developing grape clusters.
For the management of loquat angular leaf spot, a 25% emulsifiable concentrate diluted 1000–3000 times is sprayed thoroughly over the foliage. The application interval is 10–15 days, with 2–3 continuous applications recommended during high-humidity periods for optimal orchard results.
The product excels in controlling citrus scab, resin disease, and black rot, which can severely downgrade fruit quality. The recommended dose is 50 g/hm², applied 2–3 times with intervals of 34–58 days depending on regional rainfall. Alternate use with other systemic fungicides can further improve the cosmetic finish of citrus fruits.
For turf brown patch, tea anthracnose, and other related foliar diseases, spray at a 125–250 mg/kg dilution. Severe turf diseases such as damping-off, blight, southern blight, and snow mold on golf courses or commercial sod farms are treated with 250–560 g/hm², applied 3–5 times every 14 days to ensure dense, healthy ground cover.
Pyraclostrobin is applied to high-value ornamentals including orchids, carnations, roses, lilies, tulips, and bromeliads to combat root rot, anthracnose, leaf spot, rust, and wilt. The recommended concentration is a 1500–3000 times dilution, spraying evenly with a manual or automated greenhouse sprayer to avoid spotting on delicate petals.
Under warm and humid climates, grapevine black pox, powdery mildew, and anthracnose can spread aggressively. Preventive protective sprays should begin before the initial disease outbreak, followed by 2–3 subsequent applications every 7–10 days, closely monitoring local weather patterns and disease progression models.
The fungicide provides targeted control against destructive turf diseases such as Pythium blight, summer patch, dollar spot, Fusarium wilt, and powdery mildew during peak heat stress. Application is at 1500–3000 times dilution, sprayed with a calibrated manual or boom sprayer to guarantee uniform soil and foliar coverage.
Pyraclostrobin may affect silkworm populations, so aerial drift must be strictly prevented near active mulberry fields. When applied on sensitive varieties such as certain pear trees, avoid spraying at the early flowering stage and within 20 days after full bloom to prevent potential phytotoxicity to developing fruitlets.
Safe use of Pyraclostrobin requires rigorous attention to user protection protocols, environmental stewardship, and correct facility storage. Following these comprehensive guidelines helps mitigate risk to operational personnel, local animals, and surrounding ecosystems while ensuring maximum effective application in commercial agriculture.
This product exhibits high toxicity to fish, aquatic organisms, and silkworms. To support clients in their environmental compliance and registration processes, it is noted that while the soil half-life (DT50) indicates moderate persistence, runoff into water bodies must be avoided entirely. Do not use near mulberry fields or open water sources. Never wash application equipment in rivers, streams, or ponds. Conversely, the active ingredient demonstrates low toxicity profiles toward bees, earthworms, and avian species, making it suitable for integrated pest management (IPM) when applied responsibly.
Operators must wear approved protective clothing, chemical-resistant gloves, and a fitted respirator mask during handling, mixing, and application. Prevent any direct contact with skin and avoid inhalation of spray mist through the mouth or nose. Do not eat, drink, or smoke during the application process. Wash all exposed skin thoroughly with soap and change into clean clothing immediately after field operations.
To combat the high risk of pathogen mutation, we strongly advise formulators and large farms to implement a strict resistance management strategy. Pyraclostrobin should be systematically alternated with fungicides featuring entirely different modes of action (such as Group 3 or Group 7 fungicides). Limiting the number of applications per season and incorporating crop rotation guidelines ensures the long-term field effectiveness of this valuable chemistry.
Used chemical containers must be triple-rinsed and disposed of safely according to local agricultural regulations. Under no circumstances should empty containers be reused for food, water, or other purposes, and they must never be discarded in open fields or unapproved landfill areas.
Pregnant and breastfeeding women must strictly avoid any contact with this technical material or its formulated products. Extra operational caution and clear workplace signage are required in facilities handling the concentrated active ingredient.
Always prepare the fungicidal solution fresh immediately before each use. Stir the mixture thoroughly and continuously during the dilution process to ensure an even, stable suspension in water, preventing settling that could lead to uneven field application.
If any physical discomfort occurs during handling, halt work immediately and seek professional medical attention, providing the product label or safety data sheet (SDS) to the physician. For accidental skin contact, wash the affected area vigorously with plenty of soap and water. For eye exposure, hold eyelids open and rinse gently with clean water for at least 15 minutes. For inhalation exposure, move the individual to fresh air. In the event of ingestion, rinse the mouth thoroughly and transport the patient to a hospital immediately.
Store the product in a cool, dry, and well-ventilated warehouse facility, strictly protected from rain, direct sunlight, fire sources, and extreme heat. Keep the storage area securely locked and completely out of reach of children or unauthorized personnel. Never store or transport this chemical alongside human food, drinking water, animal feed, or agricultural seeds.
Red Sun Pyraclostrobin strictly complies with national agricultural registration protocols and international quality manufacturing standards. The following registrations confirm its approved use in global agriculture, supporting safe distribution and formulation.
· 98% TC: Officially registered as a technical concentrate under code PD20172025, providing a highly pure foundational ingredient for advanced agricultural formulations.
· 30% SC: Registered as a stable suspension concentrate under code PD20183116, ready for immediate dilution and field application.
· Compliance Scope: All supplied products meet stringent regulatory requirements for production, accurate labeling, and safe agricultural application. Furthermore, we provide comprehensive documentation regarding Maximum Residue Limits (MRLs) and market access standards for the EU, North America, and major agricultural export destinations, assisting multinational traders in navigating complex export compliance requirements and avoiding cross-border trade risks.
Red Sun Pyraclostrobin is managed, packaged, and transported under strict international hazardous materials standards. The following detailed information guides safe labeling, warehouse handling, and global logistics during storage and ocean or overland shipment.
· GHS Symbols: Classified under GHS06 (Toxic) and GHS09 (Environmental Hazard), requiring appropriate visual labeling on all outer packaging.
· Signal Word: Danger, clearly indicating the hazardous classification of the concentrated technical material.
· Hazard Statements: H315 (Causes skin irritation), H331 (Toxic if inhaled), and H410 (Very toxic to aquatic life with long-lasting effects) precisely define the skin, inhalation, and aquatic risks associated with the chemical.
· Precautionary Statements: P261, P273, P304+P340+P312, P391, P403+P233, and P501 provide comprehensive handling, ventilation, spill response, and disposal guidance for logistics personnel.
· Personal Protective Equipment: Chemical-resistant gloves and protective eyewear are mandatory for direct handling of the containers during loading and unloading.
· European Risk Phrases: R50/53 highlights the severe environmental risk to aquatic ecosystems, demanding secure containment during transit.
· European Safety Phrases: S60 and S61 guide the safe disposal of the material and its container as hazardous waste, emphasizing environmental care.
· Transport Code: Officially classified as dangerous goods under UN30779, Packing Group III (PG3), dictating specific stowage and segregation rules for freight forwarding.
· RTECS Number: EZ3441000, serving as the primary toxicological reference for international poison control centers and regulatory bodies.
