5-Chloro-m-xylene CAS 556-97-8

Purity 97%+In StockPharmaceutical Standards
CAS No.556-97-8
Molecular FormulaC8H9Cl
Molecular Weight140.61 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

5-Chloro-m-xylene CAS 556-97-8 chemical structure

Description

Recommended for analytical method development and validation; each product is supplied with a full Certificate of Analysis (COA) ensuring ISO 17034 metrological traceability.

5-Chloro-m-xylene (CAS 556-97-8) is a high-purity analytical reference standard with the molecular formula C8H9Cl and a molecular weight of 140.61 g/mol.

Owing to chlorine substitution, an aromatic ring system, 5-Chloro-m-xylene is typically off-white to pale yellow liquid. Its solid-state physicochemical attributes — including a molecular weight of 140.61 g/mol — guide the selection of appropriate sample preparation and analytical techniques. The presence of an aromatic ring or conjugated system gives the compound characteristic absorption bands in the UV-Vis region, making it well suited to UV or diode-array detection (DAD).

As a certified reference material (CRM), 5-Chloro-m-xylene meets the metrological traceability requirements of ISO/IEC 17025 laboratories. Batch-to-batch consistency is monitored via control charts to guarantee comparable assigned values across lots.

Physical & Chemical Properties

Molecular FormulaC8H9Cl
Molecular Weight140.61 g/mol
Purity97%+
StorageStore at 2-8°C, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, acetonitrile, DMSO
StabilityMay oxidize slowly on prolonged air exposure
Degree of Unsaturation (DBE)4.0
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1957
Halogen ContentCl-containing

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