Sodium arsenate heptahydrate CAS 7778-43-0

Purity 97%+In StockPharmaceutical Standards
CAS No.7778-43-0
Molecular FormulaHAsO4
Molecular WeightN/A
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

Sodium arsenate heptahydrate CAS 7778-43-0 chemical structure

Description

The occurrence of Sodium arsenate heptahydrate is closely related to an inorganic composition in its molecular formula, which determines its behaviour during synthesis, purification, or degradation.

Sodium arsenate heptahydrate (CAS 7778-43-0), molecular formula HAsO4Na and molecular weight 162.92 g/mol, is a CATO reference standard with documented purity and traceability.

The molecular framework of Sodium arsenate heptahydrate (HAsO4Na) 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.

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

As a certified reference material (CRM), Sodium arsenate heptahydrate 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 FormulaHAsO4 2*Na
Molecular Weight162.92 g/mol
Purity97%+
StorageStore at 2-8°C, keep sealed and dry
Solubility (reference)Freely soluble in water
StabilityHygroscopic; reseal immediately after opening
CAS Registry Year (est.)1959

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Why CATO?