1,1,3,3,5,5,7,7,9,9-Decamethylpentasiloxane CAS 995-83-5

Purity 97%+In StockPharmaceutical Standards
CAS No.995-83-5
Molecular FormulaC10H32O4Si5
Molecular Weight356.79 g/mol
CategoryPharmaceutical Standards / API Standards
AvailabilityIn Stock

Chemical Structure

1,1,3,3,5,5,7,7,9,9-Decamethylpentasiloxane CAS 995-83-5 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.

1,1,3,3,5,5,7,7,9,9-Decamethylpentasiloxane (CAS 995-83-5), molecular formula C10H32O4Si5 and molecular weight 356.79 g/mol, is a CATO reference standard with documented purity and traceability.

Based on its molecular formula C10H32O4Si5, 1,1,3,3,5,5,7,7,9,9-Decamethylpentasiloxane contains a carboxylic acid group, a hydroxyl group, an ether linkage; these features give the compound characteristic functional-group stretching vibrations in infrared spectroscopy. The molecular weight of 356.79 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry. The high carbon-to-hydrogen ratio imparts good lipophilicity, allowing liquid-liquid extraction with non-polar solvents such as n-hexane or ethyl acetate.

As a certified reference material (CRM), 1,1,3,3,5,5,7,7,9,9-Decamethylpentasiloxane 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 FormulaC10H32O4Si5
Molecular Weight356.79 g/mol
Purity97%+
StorageStore in a cool place (≤25°C), keep sealed and dry
Solubility (reference)Soluble in methanol, ethanol, DMSO
StabilityHygroscopic; reseal immediately after opening
Degree of Unsaturation (DBE)-5.0
CAS Registry Year (est.)1957

Recommended Standards

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