Hydroxy-terminated poly(dimethylsiloxane) CAS 31692-79-2
| CAS No. | 31692-79-2 |
| Molecular Formula | C2H8O2Si |
| Molecular Weight | 92.17 g/mol |
| Category | Pharmaceutical Standards / API Standards |
| Availability | In Stock |
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.
Hydroxy-terminated poly(dimethylsiloxane) (CAS 31692-79-2), molecular formula C2H8O2Si and molecular weight 92.17 g/mol, is a CATO reference standard with documented purity and traceability.
The molecular framework of Hydroxy-terminated poly(dimethylsiloxane) (C2H8O2Si) is characterized by a carboxylic acid group, a hydroxyl group, an ether linkage. 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.
CATO manufactures Hydroxy-terminated poly(dimethylsiloxane) 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 | C2H8O2Si |
| Molecular Weight | 92.17 g/mol |
| Purity | 97%+ |
| Storage | Store at 2-8°C |
| Solubility (reference) | Soluble in methanol, acetonitrile, DMSO, water (slightly soluble) |
| Stability | Stable under recommended storage conditions |
| Degree of Unsaturation (DBE) | -1.0 |
| CAS Registry Year (est.) | 1966 |
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Recommended Standards
- Cyclopentanone-d8 (CAS 4477-17-2)
- 70131-67-8 Siloxanes and Silicones, di-Me, hydroxy-terminated Siloxanes and Silicones di-Me, hydroxy-terminated 42% in dimethyl hydrolyzate Q 4-2737 X 21-22-160AS X 22-160A X 22-160AS X 22-160B X 22-176B Baysilon C 0.7 FM 0411 alpha-Hydro-omega-hydroxypoly(dimethylsiloxane) Macromonomer HK20 Polydimethylsiloxane, hydroxy end-blocked PS 195 PS 339.7 RF 5000 Silanol-terminated di-Me siloxanes Silicone L-90000/1000 Siltech S 700 Poly(oxy(dimethylsilylene), alpha-hydro, omega-hydroxy- Hydroxy-terminated dimethyl siloxanes and silicones (CAS 70131-67-8)
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Why CATO?
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