Description

Endosulfan I CAS NO 959-98-8 is a specific stereoisomer of the organochlorine insecticide Endosulfan. This compound is of significant interest for research and analytical purposes, particularly in environmental monitoring and toxicological studies. It is primarily required by analytical laboratories, regulatory bodies, and research institutions studying pesticide residues, environmental fate, and the degradation pathways of persistent organic pollutants.

Application

• Analytical Reference Standard: Serves as a certified high-purity standard for the calibration of analytical equipment (GC, GC-MS, HPLC) in pesticide residue analysis.
• Environmental Monitoring: Used in the quantification and confirmation of Endosulfan I residues in soil, water, and air samples for environmental compliance and research.
• Toxicological Research: Employed in laboratory studies to investigate the specific toxicokinetics, metabolism, and ecotoxicological effects of the α-isomer of Endosulfan.
• Method Development & Validation: Critical for developing and validating new analytical methods for the detection of organochlorine pesticides in complex matrices.
• Quality Control: Used as an internal standard or system suitability check in the quality control laboratories of agrochemical manufacturers and testing facilities.
• Regulatory Compliance Testing: Essential for testing laboratories to comply with national and international regulations (e.g., EPA, EU-MRLs) regarding pesticide limits in food and the environment.

Basic Information

Product Name	Endosulfan I
CAS No.	959-98-8
Molecular Formula	C9H6Cl6O3S
Molecular Weight	406.93 g/mol
Synonyms	α-Endosulfan; Endosulfan A; 6,7,8,9,10,10-Hexachloro-1,5,5a,6,9,9a-hexahydro-6,9-methano-2,4,3-benzodioxathiepin-3-oxide; Thiodan I; Benzoepin I; 1,4,5,6,7,7-Hexachloro-5-norbornene-2,3-dimethanol cyclic sulfite (alpha isomer); Cyclodan I; Malix
EINECS	213-507-3

Quality Control

Our Endosulfan I is produced and handled under strict quality protocols to ensure high purity and consistency for analytical applications. Each batch is analyzed using advanced chromatographic techniques to confirm identity and purity. A comprehensive Certificate of Analysis (COA) detailing assay, related substances, and confirmatory tests is provided with every shipment to support your research and compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated place at a controlled room temperature (15-25°C). Keep away from heat and incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline solid
Identification (IR)	Conforms to reference spectrum
Identification (HPLC)	Retention time matches reference standard
Assay (HPLC)	≥ 98.0%
Related Substances (HPLC)	Total impurities ≤ 2.0% Any single impurity ≤ 1.0%
Endosulfan II (β-isomer)	≤ 0.5%
Endosulfan Sulfate	≤ 0.5%
Solubility	Soluble in common organic solvents (e.g., acetone, toluene)

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