11130-20-4 silicic acid; tetrakis(tungsten oxide) CAS 11130-20-4

Purity 97%+In StockPharmaceutical Standards
CAS No.11130-20-4
Molecular Formula4*O9W3
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

11130-20-4 silicic acid; tetrakis(tungsten oxide) CAS 11130-20-4 chemical structure

Description

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

11130-20-4 silicic acid; tetrakis(tungsten oxide) (CAS 11130-20-4), molecular formula O9W3H4O4Si and molecular weight 791.62 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of 11130-20-4 silicic acid; tetrakis(tungsten oxide) (O9W3H4O4Si) is characterized by an inorganic composition. In reversed-phase chromatography, its retention is governed primarily by the polarity and ionization state of its functional groups, which provides a practical basis for HPLC-UV/DAD or LC-MS method development.

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.

Physical & Chemical Properties

Molecular Formula4*O9W3 H4O4Si
Molecular Weight791.62 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityHygroscopic; reseal immediately after opening
CAS Registry Year (est.)1960

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Why CATO?