Analytical Reagent 2-Chlorobenzaldehyde CAS 89-98-5 GC Reference Standard Liquid

Laboratories quantifying 2-chlorobenzaldehyde (CAS 89-98-5) in process streams, in workplace air or as a residue in a pharmaceutical or agrochemical product need a reference material whose purity is stated rather than assumed. This analytical grade is prepared from the high purity production stream, ampouled under argon, and characterised by GC with flame ionisation detection and by GC-MS for identity.

The certificate reports the purity by area normalisation, every impurity peak above 0.01 percent, the water content, and the retention index on a standard non polar column. With that information a laboratory can build a calibration curve, document a limit of detection and demonstrate traceability in an ISO 17025 audit, without spending weeks characterising the standard internally.

• Purity 99.9% by GC area normalisation: a clean calibration point for quantitative methods
• Impurity peaks identified per lot: every peak above 0.01% is listed so interference can be assessed before use
• Identity confirmed by GC-MS: verifies the main peak against the reference mass spectrum
• Argon filled amber ampoules: no oxidation or hydrolysis between analyses, even over months
• Water 0.05% maximum: stable retention times on polar columns and no hydrolysis in derivatisation steps
• Retention index reported: transferable between instruments and columns for method development

Used as a calibration and system suitability standard in gas chromatography of aromatic aldehydes, as a reference for residue and impurity testing of agrochemical and pharmaceutical products, and as an identity reference in raw material incoming inspection.

A working solution is normally prepared at 0.1 to 1 mg/mL in a suitable solvent such as methanol free dichloromethane or hexane, stored at 2 to 8 degrees C in a sealed vial and used within one month. Our analytical note gives an oven programme on a 30 m 5 percent phenyl column and the expected retention window.

Packed in 100 mL and 500 mL amber glass bottles with PTFE lined caps, argon filled and foam packed in cartons for air freight. Each container carries lot number, purity, packaging date and storage instruction.

Store at 2 to 8 degrees C under argon and protect from light; allow the bottle to reach room temperature before opening to prevent condensation. Shipments leave within 7 to 15 working days with the COA and chromatogram attached.

Every lot ships with a Certificate of Analysis, the GC chromatogram, the GC-MS identification report and the retention index. A retention sample is stored under argon for 36 months.

We can provide a statement of traceability and the measurement uncertainty for the assigned purity, and custom mixtures containing the 3- and 4-chloro isomers for selectivity testing can be prepared on request.