Ammonium metatungstate hydrate CAS 12333-11-8

Purity 97%+In StockPharmaceutical Standards
CAS No.12333-11-8
Molecular FormulaH8O40W12
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Ammonium metatungstate hydrate CAS 12333-11-8 chemical structure

Description

As a certified reference material (CRM), Ammonium metatungstate hydrate 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.

Ammonium metatungstate hydrate (CAS 12333-11-8) is a high-purity analytical reference standard with the molecular formula H8O40W12H2OH3N and a molecular weight of 2889.15 g/mol.

The molecular framework of Ammonium metatungstate hydrate (H8O40W12H2OH3N) is characterized by an inorganic composition. 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. Nitrogen-containing functional groups confer excellent ionization efficiency in positive-ion electrospray (ESI) mode, making the compound well suited to LC-MS/MS analysis.

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 FormulaH8O40W12 H2O 6*H3N
Molecular Weight2889.15 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), protect from light, keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityLight-sensitive; avoid direct strong light; Hygroscopic; reseal immediately after opening
CAS Registry Year (est.)1960
Nitrogen Atoms1

Related Ammonium Standards

Recommended Standards

Why CATO?