Description

2,2′,5,5′‐Tetrabromodiphenyl Ether Standard Solution is a high-purity, certified reference material (CRM) essential for accurate analytical quantification and method validation. This solution provides a reliable benchmark for calibrating instruments and ensuring data integrity in sensitive environmental and material testing. It is primarily required by analytical laboratories, quality control facilities, and research institutions engaged in the analysis of brominated flame retardants, persistent organic pollutants (POPs), and environmental contaminants.

Application

• Quantitative Analytical Standard for Gas Chromatography (GC) and High-Performance Liquid Chromatography (HPLC) systems.
• Method Development and Validation for detecting polybrominated diphenyl ethers (PBDEs) in compliance with EPA, EU, and other international regulations.
• Quality Assurance/Quality Control (QA/QC) in environmental testing laboratories for soil, water, and sediment analysis.
• Calibration and Proficiency Testing to ensure accuracy and traceability in measurements for industrial and academic research.
• Reference Material for studying the environmental fate, transport, and toxicology of brominated flame retardants.

Basic Information

Product Name	2,2′,5,5′‐Tetrabromodiphenyl Ether Standard Solution
CAS No.	446254-24-6
Molecular Formula	C₁₂H₆Br₄O
Molecular Weight	485.79 g/mol
Synonyms	2,2',5,5'-Tetrabromodiphenyl ether; BDE-47; PBDE-47; 2,2',5,5'-Tetrabromodiphenyl oxide; Tetrabromodiphenyl Ether-47; NSC 89291; 1,1'-Oxybis[2,5-dibromobenzene]; BDE 47 Standard Solution
EINECS	Contact for details

Quality Control

Every batch of our 2,2′,5,5′‐Tetrabromodiphenyl Ether Standard Solution is manufactured and certified to the highest standards of purity and accuracy. Our products undergo rigorous quality testing, including identity confirmation by GC-MS or HPLC and precise concentration verification via gravimetric preparation and/or absolute methods. A comprehensive Certificate of Analysis (COA) is provided with each unit, detailing the certified concentration, expiration date, measurement uncertainty, and traceability to NIST or other recognized standards. This ensures compliance with ISO/IEC 17025 and ISO Guide 34 for reference material producers.

Storage

Preserve in a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as specified on the certificate of analysis. Allow the solution to reach room temperature before use and mix thoroughly. For long-term stability, storage under an inert atmosphere (e.g., argon) in amber glass vials is recommended.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow solution
Identification (GC-MS / HPLC)	Conforms to reference standard
Certified Concentration	10 µg/mL to 100 µg/mL (in iso-octane, toluene, or nonane)
Purity (by GC)	≥ 98.0% (on anhydrous basis)
Expiration Date	Typically 12-24 months from date of manufacture
Measurement Uncertainty	± 2-5% (k=2, 95% confidence level)

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