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77004

Sigma-Aldrich

Tetrabutylammonium hydrogen difluoride solution

~50% in acetonitrile

Synonym(s):

TBABF, Tetrabutylammonium bifluoride, Tetrabutylammonium difluoride

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About This Item

Linear Formula:
(CH3CH2CH2CH2)4N(HF2)
CAS Number:
23868-34-0
Molecular Weight:
281.47
Beilstein:
4729304
MDL number:
MFCD00077877
UNSPSC Code:
12352101
PubChem Substance ID:
57652671
NACRES:
NA.22

form

solution

Quality Level

100

concentration

~50% in acetonitrile

impurities

≤1% water

storage temp.

2-8°C

SMILES string

[F-].F[H].CCCC[N+](CCCC)(CCCC)CCCC

InChI

1S/C16H36N.2FH/c1-5-9-13-17(14-10-6-2,15-11-7-3)16-12-8-4;;/h5-16H2,1-4H3;2*1H/q+1;;/p-1

InChI key

ZHBDKVWQJKYIFF-UHFFFAOYSA-M

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Application

  • Used as an etchant for silica films

Reactant for:
  • Nucleophilic fluorination
  • Ring-opening fluorination reaction
  • Substitution reactions

Other Notes

Efficient fluorinating agent

Signal Word

Danger

Hazard Statements

H225,H302,H314

Hazard Classifications

Acute Tox. 4 Oral - Eye Dam. 1 - Flam. Liq. 2 - Skin Corr. 1B

Storage Class Code

3 - Flammable liquids

WGK

WGK 3

Flash Point(F)

<50.0 °F - closed cup

Flash Point(C)

< 10 °C - closed cup

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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P. Bosch et al.
Tetrahedron Letters, 28, 4733-4733 (1987)
F. Camps et al.
The Journal of Organic Chemistry, 54, 4294-4294 (1989)

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