Description

1,2,3,7-Tcdf (CAS NO 83704-22-7) is a specific congener of tetrachlorodibenzofuran, a class of compounds of significant interest in environmental and analytical chemistry. This high-purity analytical standard is critical for accurate identification, quantification, and toxicological study of polychlorinated dibenzofurans (PCDFs). It is primarily required by analytical laboratories, research institutions, and regulatory bodies engaged in environmental monitoring, food safety analysis, and persistent organic pollutant (POP) research to ensure precise calibration and method validation.

Application

• Analytical Reference Standard: Primary use as a certified reference material (CRM) for calibrating GC-MS, HRGC/HRMS, and other analytical instruments.
• Environmental Analysis: Calibration and quantification of PCDFs in soil, sediment, water, and air samples for environmental compliance and site remediation studies.
• Food and Feed Safety Testing: Used in the analysis of dioxin and furan contaminants in foodstuffs, animal feed, and edible oils to meet EU and global regulatory limits.
• Toxicological Research: Serves as a pure substance for studying the congener-specific toxicity, environmental fate, and metabolic pathways of chlorinated dibenzofurans.
• Quality Control & Method Development: Essential for developing, validating, and verifying analytical methods in accredited testing laboratories (ISO/IEC 17025).
• Regulatory Compliance: Supports testing for compliance with international regulations such as the Stockholm Convention on POPs, EU Directive 2022/2002, and US EPA Method 1613.

Basic Information

Product Name	1,2,3,7-Tcdf
CAS No.	83704-22-7
Molecular Formula	C12H4Cl4O
Molecular Weight	305.97 g/mol
Synonyms	1,2,3,7-Tetrachlorodibenzofuran; Tetrachlorodibenzofuran (1,2,3,7-); 1,2,3,7-TeCDF; NSC 89391; Dibenzofuran, 1,2,3,7-tetrachloro-; TCDF (1,2,3,7-isomer)
EINECS	Contact for details

Quality Control

Every batch of 1,2,3,7-Tcdf is manufactured and handled under strict quality protocols to ensure the highest purity and consistency required for trace-level analysis. Our products undergo rigorous quality testing, including identity confirmation by multiple orthogonal methods and precise purity determination, to ensure compliance with industry standards for reference materials. Certificates of Analysis (COA) with detailed chromatographic data and lot-specific information are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the certificate of analysis. For long-term storage, keep under inert atmosphere at -20°C or below. Allow the sealed vial to equilibrate to room temperature before opening to prevent moisture condensation.

Specification

Item	Specification
Appearance	White to off-white solid
Identification (IR)	Conforms to structure
Identification (GC-MS)	Conforms to structure
Purity (HPLC)	≥ 98.0% (Area %)
Purity (GC)	≥ 98.0% (Area %)
Solubility	Soluble in toluene, dichloromethane, DMSO

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