79255

Phthalic acid

analytical standard

• Synonym(s): 1,2-Benzenedicarboxylic acid
• Linear Formula: C₆H₄-1,2-(CO₂H)₂
• CAS Number: 88-99-3
• Molecular Weight: 166.13
• UNSPSC Code: 85151701
• NACRES: NA.24
• PubChem Substance ID: 329768344
• EC Number: 201-873-2
• Beilstein/REAXYS Number: 608199
• MDL number: MFCD00002467

Properties

• grade: analytical standard
• Quality Segment: 100
• assay: ≥99.5% (GC), ≥99.5% (T)
• shelf life: limited shelf life, expiry date on the label
• technique(s): HPLC: suitable, gas chromatography (GC): suitable
• impurities: ≤0.5% water
• mp: 210-211 °C (dec.) (lit.)
• application(s): cleaning products; cosmetics; food and beverages; personal care
• format: neat
• SMILES string: OC(C1=C(C(O)=O)C=CC=C1)=O
• InChI: 1S/C8H6O4/c9-7(10)5-3-1-2-4-6(5)8(11)12/h1-4H,(H,9,10)(H,11,12)
• InChI key: XNGIFLGASWRNHJ-UHFFFAOYSA-N

Description

General description

Phthalic acid is an organic acid and a major bioactive component, reportedly identified in the extracts of Solanum nigrum, Nigella sativa, Angelicae Radix and Ligustici Rhizoma, utilized as Chinese herbal medicines.

Application

Refer to the product′s Certificate of Analysis for more information on a suitable instrument technique. Contact Technical Service for further support.

Phthalic acid may be used as an analytical reference standard for the quantification of the analyte in the following:

• Angelicae Radix and Ligustici Rhizoma using high performance liquid chromatography with photodiode array detection (HPLC-PDA) followed by liquid chromatography coupled to mass spectrometry (LC-MS) and capillary electrophoresis (CE) analyses.
• Nigella sativa and Solanum nigrum using gas chromatography-mass spectrometry (GC-MS).

Other Notes

Find a digital Reference Material for this product available on our online platform ChemisTwin® for NMR. You can use this digital equivalent on ChemisTwin® for your sample identity confirmation and compound quantification (with digital external standard). An NMR spectrum of this substance can be viewed and an online comparison against your sample can be performed with a few mouseclicks. Learn more here and start your free trial.

Safety Information

• pictograms: GHS05
• signalword: Danger
• hcodes: H318
• pcodes: P280 - P305 + P351 + P338
• Hazard Classifications: Eye Dam. 1
• Storage Class: 11 - Combustible Solids
• wgk: WGK 1
• flash_point_f: 334.4 °F
• flash_point_c: 168 °C