Description

Chloridazon is a selective pre- and post-emergence herbicide belonging to the pyridazinone chemical class, widely used for broadleaf and grassy weed control in root crops and cereals. Its proven efficacy, favorable environmental degradation profile, and compatibility with integrated pest management systems make it a trusted solution for sustainable agricultural production. Chloridazon CAS NO 1698-60-8 is primarily sourced by agrochemical formulators, contract manufacturing organizations (CMOs), and crop protection R&D laboratories requiring high-purity active pharmaceutical ingredient (API)-grade or technical-grade material.

Application

• Formulation of selective herbicidal suspensions and emulsifiable concentrates for sugar beet cultivation
• Active ingredient in post-emergence herbicides targeting Chenopodium album, Polygonum aviculare, and Galium aparine
• Intermediate in the synthesis of metabolically stable herbicidal analogs and prodrugs
• Reference standard for HPLC and GC-MS residue analysis in food safety and environmental monitoring labs
• Research tool in plant physiology studies on photosystem II inhibition and chlorophyll degradation pathways
• Component in tank-mix formulations with glyphosate or triazines to broaden weed spectrum and delay resistance development

Basic Information

Product Name	Chloridazon
CAS No.	1698-60-8
Molecular Formula	C8H7ClN2O
Molecular Weight	182.61 g/mol
Synonyms	2-(2-Chlorophenyl)-4,5-dihydro-3H-pyridazin-3-one; 2-(o-Chlorophenyl)-4,5-dihydro-3(2H)-pyridazinone; Pyridazinone herbicide; Casoron; Pyramin; CHPD; 2-(2-Chlorophenyl)-4,5-dihydro-3H-pyridazin-3-one; NSC 13121; UNII-91U3Z4G2FQ; CHEBI:33447
EINECS	216-919-1

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches meet stringent specifications for identity, assay, residual solvents, heavy metals, and related substances per ICH Q3 guidelines. Technical-grade material conforms to ISO 8420:2021 (pesticide technical materials), while higher-purity grades support compliance with USP-NF, EP, and FDA requirements for reference standards.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15–25°C) in a dry, well-ventilated area away from strong oxidizing agents and incompatible materials such as strong alkalis or fluorides. Avoid exposure to moisture and direct sunlight due to light-sensitive nature.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference standard
Assay (HPLC)	≥ 98.5%
Melting Point	127–130°C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%
Heavy Metals (as Pb)	≤ 10 ppm
Related Substances (HPLC)	Single impurity ≤ 0.3%; Total impurities ≤ 1.0%

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.