Description

Celanese Ester No. 9 For Gas Chromatography is a high-purity chemical standard specifically formulated for analytical instrumentation. This product is essential for ensuring the accuracy, precision, and reliability of gas chromatographic analyses in research and quality control laboratories. It is primarily used by analytical chemists and QC professionals in the pharmaceutical, environmental, petrochemical, and food & beverage industries for instrument calibration, method development, and as a reference material.

Application

• Primary standard for calibrating Gas Chromatography (GC) and Gas Chromatography-Mass Spectrometry (GC-MS) systems.
• Reference material in method development and validation for analytical procedures.
• System suitability testing and performance qualification of chromatographic equipment.
• Quality control applications in pharmaceutical impurity profiling and residual solvent analysis.
• Environmental analysis for quantifying volatile organic compounds (VOCs).
• Internal standard in quantitative analysis to improve data accuracy.
• Research and development of new chromatographic methods and columns.

Basic Information

Product Name	Celanese Ester No. 9 For Gas Chromatography
CAS No.	126-57-8
Molecular Formula	C12H22O4
Molecular Weight	230.30 g/mol
Synonyms	Diethyleneglycol dibenzoate; Bis(2-ethoxyethyl) phthalate (common misnomer); Bis(2-ethoxyethyl) 1,2-benzenedicarboxylate; Ethyl diglycol benzoate; 2,2'-Oxybis(ethanol) dibenzoate; Benzoic acid, 2,2'-oxybis[ethyl] ester; Ester No. 9; Celanese Ester 9
EINECS	204-783-5

Quality Control

Our Celanese Ester No. 9 is manufactured and tested to meet the exacting standards required for high-precision analytical applications. Each batch undergoes rigorous analysis to ensure identity, purity, and consistency. A comprehensive Certificate of Analysis (COA) detailing purity, chromatographic profile, and other critical parameters is provided with every shipment to support your quality systems and regulatory compliance.

Storage

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

Specification

Item	Specification
Appearance	Clear, colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 99.5%
Water Content (KF)	≤ 0.1%
Residue on Ignition	≤ 0.05%
Chromatographic Purity (GC)	Total related substances ≤ 0.3%
Refractive Index (n20D)	1.542 - 1.546
Density (20°C)	1.168 - 1.172 g/mL

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