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Other Names:


    [2.2.2]octane bis(tetrafluoroborate)



General Information:


CAS Number: 140681-55-6

Molecular Weight: 354.26 g/mol

Appearance: Colorless solid

Melting Point: 260 C

Selectfluor is a source of electrophilic fluorine. Selectfluor is very effective, safe, non-toxic, and easy to handle making it a convenient reagent for large scale synthesis. Historically electrophilic fluorinations were done using molecular fluorine (F2) which is very toxic and difficult to handle.

Common Uses:

Reagent for electrophilic fluorinations


Selectfluor may be harmful to skin, eyes, or the respiratory tract. Selectfluor is a moderately strong oxidizing agent. Handle and store accordingly. Selectfluor should be stored at <30 C and can decompose exothermally above 100 C.


1) Wikipedia: Selectfluor (link)

2) Selectfluor fluorinating reagent (link)