Description

Metolachlor Esa Na-Salt, Pestanal is a high-purity analytical standard of the sodium salt of metolachlor ethanesulfonic acid (ESA), a major environmental metabolite of the chloroacetamide herbicide metolachlor. This certified reference material is essential for precise environmental monitoring, residue analysis, and method validation in regulatory and research laboratories. It is primarily used by analytical chemists, environmental scientists, and quality control professionals in the agrochemical, environmental testing, and food safety industries to ensure accurate quantification and compliance with regulatory limits for pesticide residues.

Application

• Primary Use as an Analytical Reference Standard: Calibration and quantification in LC-MS/MS, HPLC, and GC-MS methods for the detection of metolachlor and its metabolites.
• Environmental Fate and Monitoring Studies: Tracking the degradation, mobility, and persistence of metolachlor in soil, groundwater, and surface water.
• Regulatory Compliance and Residue Analysis: Supporting testing for compliance with maximum residue limits (MRLs) in crops, food, and drinking water as set by agencies like the EPA and EFSA.
• Method Development and Validation: Serving as a critical component in developing, optimizing, and validating new analytical protocols in accredited laboratories.
• Quality Assurance/Quality Control (QA/QC): Acting as a system suitability check and a known positive control in routine analytical runs to ensure instrument and method performance.
• Toxicological and Ecotoxicological Research: Investigating the environmental impact and metabolic pathways of metolachlor in biological systems.

Basic Information

Product Name	Metolachlor Esa Na-Salt, Pestanal
CAS No.	171118-09-5
Molecular Formula	C15H21NNaO4S
Molecular Weight	334.39 g/mol
Synonyms	Metolachlor ESA Sodium Salt; 2-[(2-Ethyl-6-methylphenyl)(2-methoxy-1-methylethyl)amino]-2-oxoethanesulfonic Acid Sodium Salt; Sodium 2-[(2-Ethyl-6-methylphenyl)(2-methoxy-1-methylethyl)amino]-2-oxoethanesulfonate; Metolachlor OXA (common naming for sulfonic acid metabolites); Alachlor ESA Sodium Salt (structurally related compound); Metolachlor ethanesulfonic acid sodium salt; Metolachlor metabolite ESA sodium salt; CGA-77102 (metabolite designation)
EINECS	Contact for details

Quality Control

As a Pestanal grade analytical standard, this product is manufactured under strict quality controls to ensure the highest purity and reliability for critical analytical applications. Each batch is supplied with a comprehensive Certificate of Analysis (COA) that includes data for identity, purity, and trace impurities, validated by orthogonal analytical techniques. Our quality system is designed to support GLP (Good Laboratory Practice) and ISO 17025-accredited testing environments, providing the traceability and consistency required for regulatory submissions and research publications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (15-25°C). This material is hygroscopic (moisture-sensitive); ensure the container is sealed tightly after each use to prevent absorption of atmospheric moisture, which could affect stability and purity.

Specification

Item	Specification
Appearance	White to off-white powder or crystalline solid
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Purity (HPLC)	≥ 98.0% (Area Percent)
Water Content (KF)	≤ 2.0 %
Residue on Ignition	≤ 0.1 %
Heavy Metals (as Pb)	≤ 20 ppm

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