1,1,1,3,5,7,7,7-Octamethyltetrasiloxane CAS 16066-09-4
| CAS No. | 16066-09-4 |
| Molecular Formula | C8H24O3Si4 |
| Molecular Weight | 280.62 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
Chemical Structure
Description
Compared with other compounds in its class, the molecular weight of 280.62 g/mol gives 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane distinctive chromatographic separation conditions and mass-spectrometry parameter settings.
CATO supplies 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane (CAS 16066-09-4), a certified reference material (molecular formula C8H24O3Si4, MW 280.62 g/mol) for analytical method development and quality control.
Based on its molecular formula C8H24O3Si4, 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane 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 280.62 g/mol is directly relevant to the identification of the molecular ion in mass spectrometry.
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.
CATO manufactures 1,1,1,3,5,7,7,7-Octamethyltetrasiloxane under ISO 17034:2016 accreditation with dual CNAS and ANAB accreditation. Each batch is characterized by orthogonal methods and supplied with a full Certificate of Analysis (COA), ensuring metrological traceability.
Physical & Chemical Properties
| Molecular Formula | C8H24O3Si4 |
| Molecular Weight | 280.62 g/mol |
| Purity | 97%+ |
| Storage | Store in a cool place (≤25°C), keep sealed and dry |
| Solubility (reference) | Soluble in methanol, ethanol, DMSO |
| Stability | Hygroscopic; reseal immediately after opening |
| Degree of Unsaturation (DBE) | -3.0 |
| CAS Registry Year (est.) | 1961 |
Related Octamethyltetrasiloxane Standards
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