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Red Sun's Haloxyfop-P-methyl is a high-purity (≥97.5%) selective herbicide that effectively targets grass weeds through ACCase inhibition while safeguarding broadleaf crops. This post-emergence foliar herbicide delivers rapid absorption and systemic action for superior weed management in soybean, cotton, peanut, and rapeseed fields.
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Haloxyfop-P-methyl from Red Sun serves as a highly selective, post-emergence systemic herbicide engineered specifically for the eradication of stubborn annual and perennial grass weeds. By targeting and inhibiting the acetyl-CoA carboxylase (ACCase) enzyme, it effectively disrupts lipid and fatty acid biosynthesis within susceptible monocotyledonous species. Formulated to meet exacting agricultural standards, the technical material presents as a clear, amber-to-brownish liquid with a faintly aromatic odor and a slightly viscous tactile profile, ensuring excellent solubility and stability for downstream agrochemical manufacturing. This active ingredient is globally recognized under various identifiers, including EC Number 276-745-0, PubChem CID 55154, and ChEBI ID 81755. To support international procurement, cross-border regulatory alignment, and precise inventory cataloging, it is also registered under multiple multilingual synonyms such as haloxyfop-R-methyl, haloxifop-P-metil (Spanish), and haloxyfop-P-méthyl (French). Designed to safeguard broadleaf crops like soybeans, cotton, peanuts, and rapeseed, this compound delivers reliable weed management without compromising the yield, physiological health, or harvest timeline of the primary crops.
Parameter | Details |
Product Name | Haloxyfop-P-methyl |
CAS Number | 72619-32-0 |
Molecular Formula | C₁₆H₁₃ClF₃NO₄ |
Molecular Weight | 375.73 g/mol |
Density | 1.4 ± 0.1 g/cm³ |
Boiling Point | 420.3 ± 45.0 °C at 760 mmHg |
Flash Point | 208.0 ± 28.7 °C |
Exact Mass | 361.032867 |
PSA | 55.76000 |
LogP | 2.80 |
Vapor Pressure | 0.0 ± 1.0 mmHg at 25°C |
Refractive Index | 1.536 |
pH Value | 3.53 |
Water Solubility | 8.74 mg/L at 20°C |
Solubility in Solvents | 1000 g/L in acetone, DMSO, ethanol, methanol, toluene |
This section outlines the biochemical pathways and field-level efficacy of Haloxyfop-P-methyl, demonstrating how it systematically neutralizes invasive grass species while preserving primary agricultural investments.
Haloxyfop-P-methyl functions as a potent inhibitor of acetyl-CoA carboxylase (ACCase), a critical enzyme required for lipid biosynthesis in monocotyledons. Upon foliar application, the active ingredient is rapidly absorbed through the leaf cuticle. It then translocates systematically via both the xylem and phloem, migrating directly to the meristematic tissues. Once concentrated in the growing points, the cessation of ACCase activity halts the production of essential fatty acids, irreparably damaging cell membranes and leading to complete weed necrosis.
The systemic movement ensures that even deep-rooted perennial weeds are thoroughly targeted. Agronomists will observe a distinct progression of symptoms: initial cessation of growth within 24 to 48 hours, followed by chlorosis in the newly emerging leaves. As cell division halts entirely, the meristematic regions become soft and necrotic. Within a few days, a visible purpling or browning spreads throughout the stems and roots, culminating in the total collapse of the weed's metabolic infrastructure.
Field data confirms exceptional performance across diverse agricultural environments, particularly in fields cultivated with soybeans, cotton, peanuts, and rapeseed. It delivers consistent control over challenging gramineous weeds such as barnyard grass, crabgrass, goosegrass, and deeply entrenched reeds. Formulated to maintain its chemical integrity, it performs reliably even under suboptimal conditions like low temperatures or extended dry spells, ensuring broadleaf crops remain entirely unaffected at recommended application rates.
Our formulation is engineered to provide agricultural operators and agrochemical formulators with a dependable, highly active compound. Each feature translates directly into operational stability and superior field outcomes.
The advanced surfactant compatibility of this herbicide allows it to penetrate weed foliage within merely one hour of spraying, rendering it highly rainfast. It aggressively translocates to all vegetative and root tissues, completely arresting growth in the meristems. Complete desiccation and weed death typically occur within a rapid four to seven-day window, minimizing nutrient competition for the main crop.
Unlike many conventional herbicides that crystallize or lose efficacy in cooler climates, this active ingredient maintains a steady performance profile in cold conditions. It remains highly active during the critical 3–5 leaf stage of early-season weed emergence, ensuring that spring applications yield maximum control without requiring repeated treatments.
The inherent selectivity of Haloxyfop-P-methyl is based on the structural differences of the ACCase enzyme between monocots and dicots. Broadleaf crops possess an insensitive form of this enzyme, allowing them to tolerate the herbicide exceptionally well. Extensive phytotoxicity trials confirm that even accidental overlaps or higher-than-recommended doses cause no visual or physiological injury to the target broadleaf crops.
Once applied, the compound binds effectively to plant tissues and provides a sustained period of control, preventing secondary weed flushes during the critical crop establishment phase. Because it degrades predictably in the soil matrix, follow-up rotational crops—even sensitive gramineous species planted in subsequent seasons—remain entirely safe from residual carryover.
Meeting stringent global environmental compliance standards, the degradation profile of this product is well-documented. In typical agricultural soils, the half-life (DT50) ranges efficiently from 1 to 3 days, where it rapidly hydrolyzes into the haloxyfop acid metabolite before further mineralization. Photolysis and hydrolysis data indicate minimal persistence in water bodies. The formulation utilizes optimized, low-toxicity dispersants, significantly mitigating long-term risks to local soil microbiomes and groundwater resources.
Designed for versatility, this herbicide integrates seamlessly into various agronomic management programs. The parameters below guide optimal deployment across different cropping systems.
This solution is extensively validated for use in a wide spectrum of broadleaf crops. It is highly recommended for commercial cultivation of cotton, soybean, peanut, potato, rapeseed, sunflower, watermelon, hemp, and various vegetable crops. By eliminating grassy weed competition early in the season, it protects crop vigor and maximizes harvest yields.
The spectrum of control covers both annual and aggressive perennial grass weeds. It is highly lethal to barnyard grass, crabgrass, foxtail, ryegrass, and wild oats. Furthermore, it is particularly valued for its systemic eradication of stubborn, rhizomatous perennial weeds such as reeds, couch grass, and bermudagrass, which often resist contact herbicides.
In practical field scenarios, the herbicide is absorbed through the leaf surface and transported systematically throughout the entire plant structure. By halting growth at the meristematic tissues, it ensures complete weed death rather than mere top-burn. Its robust chemical properties allow it to maintain efficacy even when weeds are stressed by low temperatures or moderate drought conditions.
For annual weeds: Apply the 10.8% EC formulation at 20–30 ml per mu, diluted in 20–25 kg of water, precisely during the 3–5 leaf stage.
For advanced weed growth or arid weather: Increase the dosage to 30–40 ml per mu, utilizing 25–30 kg of water to ensure adequate coverage.
For perennial weeds: Apply a higher rate of 60–80 ml per mu. For optimal eradication of deep root systems, a sequential application after one month is highly recommended.
Timing is critical; applying at the 3–5 leaf stage for annual weeds guarantees the highest efficacy and lowest chemical expenditure. Operators must carefully calibrate spray nozzles to manage droplet size and strictly avoid spray drift onto neighboring gramineous crops such as corn, rice, wheat, or barley, as severe non-target damage will occur.
Ensuring occupational safety and environmental stewardship is paramount. This section details the necessary handling protocols, toxicological data, and emergency response measures required for facility operators and field applicators.
To maintain human health and safety, operators must adhere to established toxicological parameters, including an Acceptable Daily Intake (ADI) of 0.00063 mg/kg bw/day and an Acute Reference Dose (ARfD) of 0.063 mg/kg bw. Apply only once per season to prevent resistance buildup. Do not tank-mix with phenoxy broadleaf herbicides, as antagonism may reduce efficacy. Personnel must wear appropriate PPE, including chemical-resistant protective clothing, nitrile gloves, and an approved respirator mask. Avoid eating, drinking, or smoking during application, and thoroughly wash hands and exposed skin post-operation.
Ecotoxicology data indicates that while the product is practically non-toxic to birds (LD50 > 2000 mg/kg) and exhibits low toxicity to honeybees and earthworms, it is classified as toxic to fish and aquatic invertebrates. Consequently, operators must establish strict buffer zones away from aquaculture areas, streams, and lakes. Never discharge leftover spray mixtures or clean application equipment in rivers, ponds, or local waterways to prevent aquatic contamination.
Facility managers should ensure that safety data sheets (SDS) are immediately accessible. Follow label instructions meticulously to minimize exposure risks. Symptoms of overexposure may include mild eye or dermal irritation in both humans and animals. Currently, there is no specific antidote available; treatment must be symptomatic and supportive based on the clinical presentation.
If accidental ocular contact occurs, immediately flush the eyes with a gentle, steady stream of clean water for at least 30 minutes. If the individual wears contact lenses, remove them after the first 5 minutes of rinsing, then continue flushing. Seek prompt medical evaluation, providing the attending physician with the product label or SDS.
In the event of ingestion, immediately provide the conscious patient with two cups of water to dilute the substance. Never attempt to induce vomiting or administer anything by mouth to an unconscious or convulsing person. Seek emergency medical attention immediately, presenting the product packaging or regulatory label to healthcare providers.
If the herbicide comes into contact with the skin or clothing, immediately remove all contaminated garments. Wash the affected dermal areas thoroughly with copious amounts of water and non-abrasive soap. Should redness, swelling, or irritation persist after decontamination, seek professional medical advice.
If vapors or spray mists are inhaled, immediately relocate the affected personnel to an area with fresh, uncontaminated air. Keep the individual calm and resting comfortably. If respiratory distress develops or symptoms continue, consult a physician or poison control center immediately.
For international logistics and transport, Haloxyfop-P-methyl is classified under UN Number 3082 as an Environmentally Hazardous Substance, Liquid, N.O.S. It falls under IMDG Class 9 and requires Packing Group III standards, adhering strictly to CLP classification guidelines. Store the product in a cool, dry, and heavily ventilated warehouse. Keep containers tightly sealed and isolated from extreme heat, open flames, and excessive moisture. Secure storage areas under lock and key, strictly out of children’s reach, and completely segregated from food, animal feed, or potable water supplies. Dispose of empty containers through certified hazardous waste management channels.
This section outlines the primary registration data, Maximum Residue Limits (MRLs), and compliance frameworks that support the legal distribution and application of Haloxyfop-P-methyl globally. Thorough documentation ensures seamless customs clearance and adherence to international agricultural standards.
· 98% TC: Registration Number PD20098142 under national pesticide regulations, ensuring high-purity technical material for formulators.
· 108 g/L EW: Registration Number PD20131198 for emulsifiable water formulation, optimized for enhanced environmental compatibility.
· 108 g/L EC: Registration Number PD20080968 for emulsifiable concentrate formulation, delivering rapid absorption and rainfastness.
· Metabolites & MRLs: The primary degradant in plant and soil matrices is haloxyfop acid. Established Maximum Residue Limits (MRLs) are strictly monitored, ensuring that treated broadleaf crops meet the rigorous food safety and residue standards required for international export.
· All products comply with local environmental and safety standards, backed by comprehensive ecotoxicological and human health dossiers.
· Labels and packaging meet all regulatory requirements for transport and storage, including UN, IMDG, and GHS/CLP standardization for safe cross-border logistics.
