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CAS 18748-91-9

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Octadecanoic acid, trimethylsilyl ester

Description:
Octadecanoic acid, trimethylsilyl ester, also known as trimethylsilyl octadecanoate, is an organosilicon compound derived from octadecanoic acid (stearic acid) through the formation of a trimethylsilyl ester. This compound typically appears as a colorless to pale yellow liquid or solid, depending on the temperature. It is characterized by its hydrophobic nature, which results from the long hydrocarbon chain of the octadecanoic acid and the presence of the trimethylsilyl group. This structure enhances its solubility in organic solvents while rendering it insoluble in water. Octadecanoic acid, trimethylsilyl ester is often used in various applications, including as a derivatizing agent in gas chromatography, where it helps improve the volatility and stability of fatty acids and other polar compounds. Additionally, it may find use in the formulation of lubricants, surfactants, and other specialty chemicals due to its unique properties. Safety data should be consulted for handling and exposure guidelines, as with any chemical substance.
Formula:C21H44O2Si
InChI:InChI=1S/C21H44O2Si/c1-5-6-7-8-9-10-11-12-13-14-15-16-17-18-19-20-21(22)23-24(2,3)4/h5-20H2,1-4H3
InChI key:InChIKey=DDLPZVTUKLKVQB-UHFFFAOYSA-N
SMILES:C(CCC(O[Si](C)(C)C)=O)CCCCCCCCCCCCCC
Synonyms:
  • Stearic acid, trimethylsilyl ester
  • SIO 118
  • Octadecanoic acid, trimethylsilyl ester
  • Silane, trimethyl-, stearate
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