Description

2,3,4,7-Tetrachlorodibenzofuran is a specific, high-purity chlorinated dibenzofuran congener, identified by CAS NO 83704-31-8. This compound is of significant importance as a critical analytical reference standard and research chemical for environmental monitoring and toxicological studies. It is primarily required by analytical laboratories, research institutions, and regulatory bodies involved in the analysis of persistent organic pollutants (POPs), particularly dioxins and furans, to ensure accurate calibration, method validation, and quality control.

Application

• Environmental Analysis Reference Standard: Used as a certified calibration standard for the precise quantification of polychlorinated dibenzofurans (PCDFs) in environmental samples like soil, water, and air particulates.
• Food and Feed Safety Testing: Serves as a critical component in analytical methods to monitor and control dioxin and furan contamination levels in the food chain, ensuring compliance with international safety regulations.
• Toxicological and Biomedical Research: Employed in studies investigating the metabolism, pharmacokinetics, and specific toxic effects (e.g., endocrine disruption, carcinogenicity) of chlorinated dibenzofuran congeners.
• Waste and Emission Monitoring: Essential for analyzing industrial emissions and waste incineration by-products to assess compliance with environmental protection standards like the Stockholm Convention on POPs.
• Quality Assurance/Quality Control (QA/QC): Used as an internal standard or spike in analytical procedures to validate method accuracy, precision, and recovery rates in accredited testing laboratories.
• Method Development and Validation: A key material for developing and validating new analytical techniques, such as high-resolution gas chromatography/mass spectrometry (HRGC/HRMS).

Basic Information

Product Name	2,3,4,7-Tetrachlorodibenzofuran
CAS No.	83704-31-8
Molecular Formula	C₁₂H₄Cl₄O
Molecular Weight	305.97 g/mol
Synonyms	2,3,4,7-Tetrachlorodibenzofuran; 2,3,4,7-TeCDF; TCDF (specific isomer); NSC 89390; Dibenzofuran, 2,3,4,7-tetrachloro-; 2,3,4,7-Tetrachlorooxanthrene; 83704-31-8
EINECS	Contact for details

Quality Control

Our high-purity 2,3,4,7-Tetrachlorodibenzofuran is manufactured and handled under strict quality protocols to ensure identity, purity, and stability for critical analytical applications. Each batch is thoroughly characterized using advanced techniques including GC-MS, HPLC, and NMR to confirm congener-specific identity and purity. Certificates of Analysis (COA) detailing lot-specific data are provided and traceable to primary reference materials where applicable. Our quality system supports compliance with the standards required for environmental and food safety testing.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry place at a controlled room temperature (typically 15-25°C). This material is light-sensitive (store away from light). For long-term storage, consider keeping under inert atmosphere in a freezer (-20°C) to ensure maximum stability. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Congener Specificity (GC-MS)	≥ 99.0% (2,3,4,7-TeCDF)
Solubility	Soluble in common organic solvents (e.g., toluene, DMSO)

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