Bis(trimethylsilyl)Sulfate Bis(trimethylsilyl)Sulfate Synonyms: Sulfuric acid, TMS; BIS(TRIMETHYLSILYL) SULFATE; BIS(TRIMETHYLSILYL)SULPHATE; BIS(TRIMETHYLSILYL) SULFATE 97%; Silanol, trimethyl-, sulfate (2:1); BSS, Sulfuric acid bis(trimethylsilyl)ester; Sulfuric acid bis(trimethylsilyl) ester CAS NO.: 18306-29-1 Formula: C6H18O4Si2S Weight: 242.44072