Category: Silylation Reagents
CAS # : 77377-52-7
Chemical Name: N-tert-Butyldimethylsilyl-N-methyltrifluoroacetamide + 1% tert-Butylchlorodimethylsilane

MtBSTFA replaces active hydrogens to form t-BDMS derivatives. Derivatization is usually complete upon dissolution with this exceptionally strong, yet mild silylating reagent. MtBSTFA derivatives are 104 times more stable to hydrolysis than their corresponding TMS derivatives and produce easily interpreted mass spectra for GC/MS. Addition of t-BDMCS catalyzes reactions of hindered alcohols and amines.


Use: Silylation Reagent for GC
Appearance: Clear, colorless liquid
BP: 343ºF (172ºC)
MF: C9H18F3NOSi or (C9H18F3NOSi + C6H15ClSi)
FW: 241.33 g/mol (MTBSTFA) or {241.33 g/mol (MTBSTFA) + 150.72 g/mol (t-BDMCS)}
Specific Gravity (H20 = 1.0): 1.023
Suggested Storage Conditions: Cool Place

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