Hangzhou Leap Chem Co., Ltd. is one of the most professional manufacturers and suppliers of pretilachlor丨cas 51218-49-6 in China. Welcome to wholesale bulk high quality chemical products at competitive price from our factory. If you have any enquiry about custom service, please feel free to email us.
Specifications
|
Appearance |
Yellow to brown liquid |
|
Assay |
95% min |
|
Water |
0.3% max |
|
Acid value |
0.1% max |
|
Acetone insoluble |
0.3% max |
Transport Information
|
Parameter |
Specification |
|
UN Number |
3082 |
|
Class |
9 |
|
Packing Group |
III |
|
H.S. Code |
2924299001302 |
|
Stability & Reactivity |
The product is chemically stable under standard ambient conditions. |
|
Storage |
Tightly closed. Store in a closed, dry, ventilated place |
|
Condition to Avoid |
|
|
Package |
Introduction
Pretilachlor丨CAS 51218-49-6 is a selective pre-emergent herbicide from the chloroacetamide group, widely used in rice cultivation to control a broad spectrum of annual grasses, sedges, and some broadleaf weeds. Registered under CAS number 51218-49-6, pretilachlor is especially valued in flooded rice fields due to its high selectivity, low phytotoxicity, and long-lasting residual control.
Primary Applications
A. Rice (Paddy) Cultivation
Primary crop: Lowland transplanted or direct-seeded rice
Applied as pre-emergent or early post-emergent treatment, typically 0–5 days after transplanting or sowing
Target weeds:
Grasses: Echinochloa crus-galli, Leptochloa chinensis, Ischaemum rugosum
Sedges: Cyperus difformis, Fimbristylis miliacea
Broadleaf weeds: Eclipta alba, Monochoria vaginalis
B. Application Methods
Soil incorporation not required; effective under flooded or moist conditions
Available in granular, emulsifiable concentrate (EC), and suspension concentrate (SC) formulations
Can be applied alone or in combination with other herbicides (e.g., bensulfuron-methyl or pyrazosulfuron) for broader spectrum control
Benefits of Pretilachlor
A. High Selectivity for Rice
Safe to transplanted rice when used at recommended rates
Does not harm rice seedlings even in delicate growth stages
B. Broad-Spectrum Control
Controls both annual grasses and some sedges/broadleaf weeds
Reduces early weed competition, enhancing rice stand establishment
C. Long Residual Activity
Effective for 3–4 weeks after application under normal field conditions
Reduces need for repeated applications, lowering labor and costs
D. Cost-Effective and Labor-Saving
Particularly valuable in labor-scarce rice-growing regions
Reduces dependency on manual or mechanical weeding in early crop stages
E. Formulation Versatility
Available in granular form (e.g., 5G) for easy broadcasting without water
SC and EC formulations allow flexible application techniques like spraying or mixing
Conclusion
Pretilachlor丨CAS 51218-49-6 is a vital herbicide in modern rice production, offering broad-spectrum weed control, selectivity, and residual activity at low cost. Its flexibility in application and compatibility with integrated weed management programs make it an essential tool in sustainable rice farming. However, to ensure long-term effectiveness and environmental safety, it should be used responsibly with attention to rotation and drift management.
