Nitrilotriacetic acid CAS 139-13-9

Purity >95%In StockPharmaceutical Standards
CAS No.139-13-9
Molecular FormulaC6H9NO6
Molecular Weight191.14 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Nitrilotriacetic acid CAS 139-13-9 chemical structure

Description

The occurrence of Nitrilotriacetic acid is closely related to a carbohydrate-derived structure, an amide group in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Nitrilotriacetic acid (CAS 139-13-9) is a high-purity analytical reference standard with the molecular formula C6H9NO6 and a molecular weight of 191.14 g/mol.

The molecular framework of Nitrilotriacetic acid (C6H9NO6) is characterized by a carbohydrate-derived structure, an amide group. In reversed-phase chromatography, its retention is governed primarily by the protonation state of its nitrogen-containing groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development. 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.

As a certified reference material (CRM), Nitrilotriacetic 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.

Physical & Chemical Properties

Molecular FormulaC6H9NO6
Molecular Weight191.14 g/mol
AppearanceWhite to pale yellow crystalline powder. (faint amine-like odor)
Purity>95%
StorageStore at 2-8°C, protect from light, keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO, water
StabilityMay oxidize slowly on prolonged air exposure; Light-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)3.0
UV AbsorptionUV-absorbing
CAS Registry Year (est.)1957
Nitrogen Atoms1

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