Averstar Chemical Editorial Team Updated August 30, 2026
Cyhalofop-Butyl Formulations for Importers: OD and EC Rice Herbicide Supply

Cyhalofop-Butyl Formulations for Importers: OD and EC Rice Herbicide Supply
This guide explains how professional buyers can compare cyhalofop-butyl formulations and ready-mixed combinations before shortlisting suppliers. It is an educational sourcing resource, not an application recommendation, product label or legal opinion. Product approval, label directions and commercial legality must always be verified for the destination jurisdiction.
Cyhalofop-butyl is an aryloxyphenoxypropionate herbicide classified by HRAC in Group 1 as an ACCase inhibitor, requested mainly for grass-weed programmes in rice. Demand concentrates on rice-growing markets and seasons, which makes supply planning and registration timing as important as the price per litre.
Straight OD and EC configurations
Averstar lists straight cyhalofop-butyl as Cyhalofop-Butyl 20% OD and Cyhalofop-Butyl 30% EC.
An OD (oil dispersion) carries the active in a non-aqueous oil system, which is common in rice herbicide supply; an EC uses an organic solvent system. The two differ in solvent questions, packaging, agitation guidance and sometimes transport classification, so request the safety data sheet for the exact configuration quoted and compare the hazard and storage sections directly.
Ready-mixed combinations for rice programmes
Mixtures pair cyhalofop-butyl with partners from other HRAC groups to widen the weed spectrum in rice. Averstar lists Cyhalofop-Butyl + Bispyribac-Sodium 150g/L / 50g/L OD, Cyhalofop-butyl + Bispyribac-sodium 15% / 5% OD, Cyhalofop-Butyl + Penoxsulam 35% / 5% OD, Cyhalofop-butyl + Halosulfuron-methyl 350g/L / 50g/L OD and Propanil + Cyhalofop-Butyl 30% / 10% EC.
For any mixture, every active ingredient must be acceptable in the destination market and the mixture itself normally needs its own registration. Because rice weed programmes lean heavily on a small set of modes of action, resistance-management positioning should be reviewed with local advisers using the current HRAC classification, and maximum residue limits for each component should be confirmed for the destination market.
Packaging, shipment and sample planning
OD and EC offers are normally quoted in bottles, co-packs and drums, and rice-season demand is sharply seasonal: confirm production lead time against the local application window, since a shipment that arrives after the season carries inventory for a full year. Ask each supplier to state packaging materials, net contents per unit and the export carton configuration on the quotation before artwork is prepared.
When samples are needed for registration or laboratory verification, agree in writing what the sample represents: the batch, the formulation version and the specification revision. A sample drawn from a pilot batch does not prove that commercial shipments will match, so tie the commercial contract to the certificate of analysis of each shipped batch rather than to the sample alone.
Documents to request before shortlisting
An evidence-led comparison needs the same document set from every candidate supplier: the certificate of analysis, the proposed or registered label, the safety data sheet, the product specification, packaging details and the manufacturing-site identity. Ask for the version and date of each document, and keep the records together so that differences between a quotation, a label and a technical sheet can be resolved before commercial commitments are made.
For the general framework, see our herbicide mode-of-action buyer guide and the herbicide import documents and registration checklist.
Registration and residue references
Use the FAO pest and pesticide management resources for framework guidance and the Codex pesticide residues database for internationally referenced maximum residue limits, then confirm current national decisions with the destination authority. Nothing in this guide replaces the registered label or local regulatory advice.
Compare Averstar cyhalofop-butyl products
Averstar supplies the cyhalofop-butyl configurations linked above with COA, SDS, label and registration documentation support. Browse the herbicides category to compare concentrations and formulations, and use the quotation form on any product page to confirm current MOQ, packaging options, documents and delivery terms for your destination market.
Frequently asked questions
What is the practical difference between an OD and an EC offer?
The carrier system. An OD carries the active in a non-aqueous oil dispersion; an EC uses an organic solvent. They differ in packaging, agitation guidance and sometimes transport classification — compare the SDS of both offers directly.
Why does seasonality matter for rice herbicide sourcing?
Demand concentrates on the rice application window. Confirm production lead time against that window, because a shipment that arrives after the season carries inventory cost for a full year.
Does this guide recommend application rates or crops?
No. It is a pre-screening resource for sourcing conversations. Use directions, approved crops and rates are governed by the registered label in the destination market.
Authoritative references
- Herbicide mode-of-action and resistance resources - Herbicide Resistance Action Committee (HRAC Global)
- Pest and Pesticide Management - Food and Agriculture Organization of the United Nations (FAO)
- Codex Pesticides Residues Database - Codex Alimentarius Commission (FAO/WHO)
