m-Tolylphosphonic acid CAS 77918-48-0

Purity 97%+In StockPharmaceutical Standards
CAS No.77918-48-0
Molecular FormulaC7H9O3P
Molecular Weight172.12 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

m-Tolylphosphonic acid CAS 77918-48-0 chemical structure

Description

As a certified reference material (CRM), m-Tolylphosphonic acid 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.

m-Tolylphosphonic acid (CAS 77918-48-0), molecular formula C7H9O3P and molecular weight 172.12 g/mol, is a CATO reference standard with documented purity and traceability.

Owing to a phosphonate group, a carboxylic acid group, a hydroxyl group, an ether linkage, m-Tolylphosphonic acid is typically white to off-white crystalline powder. Its solid-state physicochemical attributes — including a molecular weight of 172.12 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).

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

Physical & Chemical Properties

Molecular FormulaC7H9O3P
Molecular Weight172.12 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.5
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1979

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