Description

2,2′,5,6′‐Tetrabromodiphenyl Ether Standard Solution is a certified reference material (CRM) of a specific polybrominated diphenyl ether (PBDE) congener, provided in a ready-to-use solution format. This product is essential for analytical laboratories requiring precise calibration and quality control in the detection and quantification of brominated flame retardants. It is primarily used by environmental testing facilities, regulatory bodies, and research institutions focused on persistent organic pollutant (POP) analysis and compliance monitoring.

Application

• Primary Standard for Instrument Calibration: Used to calibrate GC-MS, GC-ECD, and HPLC systems for accurate PBDE analysis.
• Environmental Monitoring: Quantification of PBDE congeners in soil, sediment, water, and air samples to assess environmental contamination.
• Food and Feed Safety Testing: Analysis of brominated flame retardant residues in food products, animal feed, and related materials for regulatory compliance.
• Consumer Product Safety: Testing of plastics, textiles, and electronics for restricted substances under regulations like RoHS and REACH.
• Method Development and Validation: Serves as a critical component in developing, optimizing, and validating new analytical methods for halogenated compounds.
• Quality Assurance/Quality Control (QA/QC): Used as a spike for recovery studies and as a control standard to ensure the accuracy and precision of laboratory data.
• Toxicological and Ecotoxicological Research: Provides a defined analyte for studying the environmental fate, bioaccumulation, and toxicity of specific PBDE congeners.

Basic Information

Item	Detail
Product Name	2,2′,5,6′‐Tetrabromodiphenyl Ether Standard Solution
CAS No.	446254-25-7
Molecular Formula	C12H6Br4O
Molecular Weight	485.79 g/mol
Synonyms	2,2',5,6'-Tetrabromodiphenyl ether; BDE-51; PBDE-51; 2,2′,5,6′-Tetrabromo diphenyl oxide; Tetrabromodiphenyl Ether congener #51; NSC 89289; 1,2,4,5-Tetrabromo-3-(4-bromophenoxy)benzene
EINECS	Contact for details

Quality Control

Every batch of our 2,2′,5,6′‐Tetrabromodiphenyl Ether Standard Solution is manufactured and certified against traceable primary reference materials. We guarantee high-purity, gravimetrically prepared solutions with precise concentration and uncertainty values. Comprehensive Certificates of Analysis (COA) are provided, detailing the results of identity confirmation (GC-MS, NMR), assay (HPLC), solvent verification, and stability assessments. Our quality system ensures compliance with ISO/IEC 17025 and ISO 17034 principles for reference material producers.

Storage

Preserve in the supplied amber vial or ampoule as a tightly closed container, protected from light. Store at 2-8°C (refrigerated) or as indicated on the certificate. Due to the highly volatile nature of common solvents used (e.g., iso-octane, toluene, nonane), ensure containers are securely sealed to prevent evaporation and concentration change. Keep away from heat and ignition sources.

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow solution
Identification	Conforms (by GC-MS or HPLC)
Concentration	10 µg/mL, 50 µg/mL, or custom (in specified solvent)
Expanded Uncertainty (k=2)	± 2% to 5% of stated concentration
Solvent	Iso-octane, Toluene, Nonane, or Cyclohexane
Purity (of analytic)	> 98.0% (by HPLC)
Water Content	< 0.1% (by Karl Fischer)
Homogeneity	Conforms

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