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Merck
CN

01544

Tetrafluoroboric acid

49.5-50.5%

Synonym(s):

Fluoroboric acid

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About This Item

Linear Formula:
HBF4
CAS Number:
16872-11-0
Molecular Weight:
87.81
NACRES:
NA.21
PubChem Substance ID:
329747325
UNSPSC Code:
12352106
MDL number:
MFCD00011345

Key Documents

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InChI

1S/BF3.FH/c2-1(3)4;/h;1H

SMILES string

F.FB(F)F

InChI key

LEMQFBIYMVUIIG-UHFFFAOYSA-N

form

liquid

concentration

49.5-50.5%

impurities

≤0.005% heavy metals (as Pb), ≤0.02% hexafluorosilic acid (H2SiF6), 1-2% free boric acid

pH

1 (20 °C, 8.7 g/L)

density

1.38 g/mL at 20 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg, sulfate (SO42-): ≤200 mg/kg

cation traces

Cu: ≤5 mg/kg, Fe: ≤50 mg/kg, Ni: ≤5 mg/kg, Zn: ≤5 mg/kg

pictograms

Corrosion
GHS05

signalword

Danger

hcodes

H314

Hazard Classifications

Eye Dam. 1 - Skin Corr. 1B

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Information

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Gary A Molander et al.
Organic letters, 12(21), 4876-4879 (2010-10-01)
Amidomethyltrifluoroborates were successfully synthesized in a one-pot fashion and used in cross-coupling reactions with a wide variety of aryl and heteroaryl chlorides.
M P Dariel et al.
Dental materials : official publication of the Academy of Dental Materials, 11(3), 208-217 (1995-05-01)
The purpose of this study was to develop a new technology for preparing mercury-free metallic dental restorative materials. The novel approach relies on the cold welding of surface treated silver particles. At ambient temperature, intermetallic compound formation takes place spontaneously
Dong-Su Kim et al.
Organic letters, 12(5), 1092-1095 (2010-02-13)
A novel series of alkyne-containing potassium organotrifluoroborates were prepared in good yields from the corresponding haloaryltrifluoroborates and various alkynes via Sonogashira coupling reaction. Also, the Suzuki-Miyaura cross-coupling reaction of alkynylaryltrifluoroborates with aryl and alkenyl bromides was achieved in the presence
X B Zhang et al.
The Analyst, 125(12), 2285-2288 (2001-02-24)
Several mu-oxo-bismetalloporphyrin complexes were synthesized for preparing fluoroborate sensors. The electrode based on mu-oxo-bis[tetra(p-chlorophenyl)porphinatomanganese(III)] with an optimized membrane composition shows a potentiometric response towards fluoroborate ion over the concentration range from 4.3 x 10(-7) to 1.0 x 10(-1) mol l-1
Hao Zhang et al.
Nature, 542(7641), 328-331 (2017-02-17)
A colloidal solution is a homogeneous dispersion of particles or droplets of one phase (solute) in a second, typically liquid, phase (solvent). Colloids are ubiquitous in biological, chemical and technological processes, homogenizing highly dissimilar constituents. To stabilize a colloidal system
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