56047-23-5 Z8GR3B6G1F Monosodium 4-chlorophthalate Monosodium hydrogen 4-chlorophthalate 1,2-Benzenedicarboxylic acid, 4-chloro-, sodium salt (1:1) 1,2-Benzenedicarboxylic acid, 4-chloro-, monosodium salt EINECS 259-963-2 Sodium 4-chlorophthalate UNII-Z8GR3B6G1F CAS 56047-23-5

Purity 97%+In StockPharmaceutical Standards
CAS No.56047-23-5
Molecular FormulaC8H4ClO4
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

56047-23-5 Z8GR3B6G1F Monosodium 4-chlorophthalate Monosodium hydrogen 4-chlorophthalate 1,2-Benzenedicarboxylic acid, 4-chloro-, sodium salt (1:1) 1,2-Benzenedicarboxylic acid, 4-chloro-, monosodium salt EINECS 259-963-2 Sodium 4-chlorophthalate UNII-Z8GR3B6G1F CAS 56047-23-5 chemical structure

Description

The assigned purity is verified by mass-balance and quantitative NMR (qNMR) approaches, with the expanded uncertainty reported at a 95% confidence level (k=2). Batch homogeneity and stability are independently assessed for every lot.

CATO supplies 56047-23-5 Z8GR3B6G1F Monosodium 4-chlorophthalate Monosodium hydrogen 4-chlorophthalate 1,2-Benzenedicarboxylic acid, 4-chloro-, sodium salt (1:1) 1,2-Benzenedicarboxylic acid, 4-chloro-, monosodium salt EINECS 259-963-2 Sodium 4-chlorophthalate UNII-Z8GR3B6G1F (CAS 56047-23-5), a certified reference material (molecular formula C8H4ClO4Na, MW 222.56 g/mol) for analytical method development and quality control.

56047-23-5 Z8GR3B6G1F Monosodium 4-chlorophthalate Monosodium hydrogen 4-chlorophthalate 1,2-Benzenedicarboxylic acid, 4-chloro-, sodium salt (1:1) 1,2-Benzenedicarboxylic acid, 4-chloro-, monosodium salt EINECS 259-963-2 Sodium 4-chlorophthalate UNII-Z8GR3B6G1F (C8H4ClO4Na) contains a salt form, a carboxylic acid group, a hydroxyl group, an ether linkage, chlorine substitution, an aromatic ring system. It is notably hygroscopic, halogen substitution raises its density and boiling point, the carboxyl group imparts weak acidity; these physicochemical properties determine the optimal preparation and storage of its standard solutions. 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).

This reference standard is suitable for quantitative analysis on major chromatographic platforms including HPLC, GC, LC-MS/MS, and GC-MS, serving as an external calibration standard or a system suitability test reference material.

Physical & Chemical Properties

Molecular FormulaC8H4ClO4 Na
Molecular Weight222.56 g/mol
AppearanceOff-white to pale yellow crystalline powder. (slight halide-like odor)
Purity97%+
StorageStore at 2-8°C, protect from light, keep sealed and dry, keep tightly closed to prevent evaporation
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening; Contains ester bond; hydrolyzes under strong alkaline conditions
Degree of Unsaturation (DBE)6.5
UV AbsorptionUV-absorbing
Structural FeaturesAromatic ring present
CAS Registry Year (est.)1973
Halogen ContentCl-containing

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