Mesosulfuron-methyl Technical
Mesosulfuron-methyl Technical: Professional Herbicide for Weed Control
Mesosulfuron-methyl Technical is a high-quality sulfonylurea herbicide widely used for post-emergence control of grass weeds in wheat and barley crops. This technical-grade active ingredient offers excellent selectivity and systemic action.
Product Specifications
- Chemical Name: Methyl 2-[(4,6-dimethoxypyrimidin-2-yl)carbamoylsulfamoyl]-4-methanesulfonamido-methylbenzoate
- Molecular Formula: C17H21N5O7S2
- Molecular Weight: 471.51 g/mol
- Appearance: White to off-white crystalline powder
- Purity: ≥95%
- Solubility: Slightly soluble in water (5.6 g/L at 20°C)
| Parameter | Specification |
|---|---|
| Melting Point | 181-183°C |
| Vapor Pressure | <1×10^-5 Pa (25°C) |
| Partition Coefficient (log Pow) | 1.36 (pH 7, 20°C) |
| Dissociation Constant (pKa) | 4.33 (20°C) |
| Stability | Stable under normal storage conditions |
Application Information
| Crop | Target Weeds | Application Rate |
|---|---|---|
| Winter Wheat | Alopecurus myosuroides, Apera spica-venti | 15-20 g ai/ha |
| Spring Barley | Lolium spp., Avena spp. | 12-18 g ai/ha |
| Durum Wheat | Phalaris spp., Bromus spp. | 15-22 g ai/ha |
Mesosulfuron-methyl Technical FAQ
Q: What is the mode of action of Mesosulfuron-methyl Technical?
A: Mesosulfuron-methyl Technical is an acetolactate synthase (ALS) inhibitor. It works by blocking the biosynthesis of branched-chain amino acids (valine, leucine, and isoleucine) in plants, leading to cessation of cell division and ultimately plant death. This action is systemic, moving throughout the plant after absorption.
Q: What safety precautions should be taken when handling Mesosulfuron-methyl Technical?
A: Always wear appropriate personal protective equipment (PPE) including chemical-resistant gloves, protective clothing, and eye protection. Avoid inhalation of dust and prevent contact with skin. Work in well-ventilated areas and wash hands thoroughly after handling. Store in original containers away from food and feed in a cool, dry place.
Packaging and Storage
- Primary Packaging: 25kg fiber drum with double polyethylene liner
- Secondary Packaging: Custom packaging available upon request
- Storage Temperature: Keep below 30°C
- Shelf Life: 2 years when stored properly in original packaging
Mesosulfuron-methyl Technical FAQ
Q: What is the recommended tank mix for Mesosulfuron-methyl Technical?
A: Mesosulfuron-methyl Technical is often tank-mixed with other herbicides like iodosulfuron-methyl-sodium or safeners like mefenpyr-diethyl for broader weed control and improved crop safety. Always conduct a jar test before mixing to check compatibility and follow local regulatory guidelines for approved mixtures.
Environmental Profile
| Parameter | Value |
|---|---|
| Soil DT50 (aerobic) | 6-21 days |
| Aquatic DT50 | 4-12 days |
| Koc (adsorption coefficient) | 30-80 mL/g |
| Photolysis DT50 | 3-7 days |
Advantages of Mesosulfuron-methyl Technical
- Excellent control of resistant grass weeds in cereals
- Low use rate (typically 10-20 g ai/ha)
- Good rainfastness (2-4 hours after application)
- Flexible application timing from early post-emergence to late tillering
- Compatible with many adjuvant systems
Mesosulfuron-methyl Technical FAQ
Q: What is the best application timing for Mesosulfuron-methyl Technical?
A: The optimal application timing is when target weeds are at the 2-4 leaf stage and actively growing. For winter cereals, autumn applications often provide better control of grass weeds, while spring applications can be effective for later-emerging weeds. Avoid applications during crop stress conditions (drought, waterlogging, frost) or when weeds are too large.
Quality Control Standards
| Test Parameter | Specification | Test Method |
|---|---|---|
| Assay | ≥95.0% | HPLC |
| Moisture | ≤0.5% | Karl Fischer |
| Acetone Insolubles | ≤0.3% | Gravimetric |
| pH (10% aq. sol.) | 5.0-7.0 | pH meter |
Regulatory Status
Mesosulfuron-methyl Technical is registered in major agricultural markets including the EU, USA, Canada, and Australia. Always check local regulations before use as registration status may vary by country and crop.
Technical Support
Our technical team provides comprehensive support including application recommendations, resistance management strategies, and customized formulation advice. Contact our experts for specific guidance on integrating Mesosulfuron-methyl Technical into your weed control programs.