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202215

Sigma-Aldrich

Sodium tetrafluoroborate

98%

Synonym(s):

Sodium fluoroborate

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About This Item

Linear Formula:
NaBF4
CAS Number:
13755-29-8
Molecular Weight:
109.79
EC Number:
237-340-6
MDL number:
MFCD00003515
UNSPSC Code:
12352302
PubChem Substance ID:
329751994
NACRES:
NA.21

Assay

98%

form

powder or crystals

solubility

water: soluble(lit.)

density

2.47 g/mL at 25 °C (lit.)

SMILES string

[Na+].F[B-](F)(F)F

InChI

1S/BF4.Na/c2-1(3,4)5;/q-1;+1

InChI key

KGJZTOFHXCFQIV-UHFFFAOYSA-N

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General description

Sodium tetrafluoroborate (NaBF4) is colorless sodium salt and its crystals belong to the rhombic crystal system. It can be synthesized by reacting tetrafluoroboric acid with sodium carbonate or hydroxide.

Application

Sodium tetrafluoroborate may be used as a catalyst for the synthesis of bis(indolyl)methanes via electrophilic substitution reaction of indoles with aldehydes and ketones. It may also be used as a source of tetrafluoroborate anoins during the synthesis of ionic liquids like 1-butyl-3-methylimidazolium tetrafluoroborate and trihexyl(tetradecyl)phosphonium tetrafluoroborate.
Sodium tetrafluoroborate may be used for the laboratory synthesis of boron fluoride. It may be used for the synthesis of fluoro-nucleic acids and fluoroheterocyclic compounds.

Pictograms

Corrosion
GHS05

Signal Word

Danger

Hazard Statements

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

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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Highly efficient synthesis of bis (indolyl) methanes catalyzed by sodium tetrafluoroborate.
Kamble VT, et al.
Chin. J. Chem., 25(1), 13-15 (2007)
Physical and electrochemical properties of 1-butyl-3-methylimidazolium bromide, 1-butyl-3-methylimidazolium iodide, and 1-butyl-3-methylimidazolium tetrafluoroborate.
Kim KS, et al.
Korean Journal of Chemical Engineering, 21(5), 1010-1014 (2004)
Industrial preparation of phosphonium ionic liquids.
Bradaric CJ, et al.
Green Chemistry, 5(2), 143-152 (2003)
Facile direct conversion of amino-heterocycles to fluoro-heterocycles using t-butylthionitrite or t-butylthionitrate with sodium tetrafluoroborate.
Yong HK, et al.
Tetrahedron Letters, 31(21), 3019-3022 (1990)
Eagleson M.
Concise Encyclopedia Chemistry, 1001-1001 (1994)
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