Analytical Standard 1-Bromo-5-Fluoropentane CAS 407-97-6 GC Reference Liquid

Quantifying a volatile halogenated compound needs a standard that is what the label says it is. This grade comes off a narrow distillation cut and is checked twice: by GC with flame ionisation for purity and by GC-MS for identity, so a laboratory is not calibrating against a positional isomer.

The certificate reports purity by area normalisation, every peak above 0.01%, water, and the retention index on a standard non-polar column. That is enough to build a calibration curve and write a defensible method validation section, without the laboratory having to characterise the standard internally first.

• Purity 99% by GC area normalisation: a usable calibration point for reaction monitoring and residue work
• Identity confirmed by GC-MS: rules out positional isomers that would sit under the same peak
• Impurity peaks listed per lot: interference is known before the method is validated
• Argon filled amber ampoules: no colour drift or hydrolysis between analyses
• Retention index reported: method transfers between instruments and columns
• Water 0.05% maximum: stable retention times on polar columns

Calibrating GC and GC-MS methods for 1-bromo-5-fluoropentane in reaction mixtures, in cleaning validation swabs and in residue studies, and acting as an identity reference in incoming inspection of bulk deliveries.

Prepare a working solution at 0.1 to 1 mg/mL in a solvent such as ethyl acetate or hexane and keep it at 2 to 8 degrees C for no more than a month. Our note gives a starting oven programme on a 30 m 5 percent phenyl column.

100 mL and 500 mL amber glass with PTFE lined caps, argon filled, foam packed in cartons for air freight. Labels carry lot, purity and packaging date.

Store at 2 to 8 degrees C under argon in the dark and let the bottle reach room temperature before opening. Air freight 7 to 15 days.

COA plus chromatogram, GC-MS identification report and retention index for every lot. Retention sample kept 36 months under argon.

Statement of traceability and the uncertainty on the assigned purity can be provided for accredited laboratories. Custom mixtures with the dibromo analogue are available for selectivity testing.