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Sodium tetrafluoroborate

Basic information Description Preparation Applications Safety Related Supplier

Sodium tetrafluoroborate Basic information

Product Name:
Sodium tetrafluoroborate
CAS:
13755-29-8
MF:
BF4Na
MW:
109.79
EINECS:
237-340-6
Mol File:
13755-29-8.mol
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Sodium tetrafluoroborate Chemical Properties

Melting point:
384 °C
Density 
2.47 g/mL at 25 °C(lit.)
storage temp. 
Store below +30°C.
solubility 
water: soluble(lit.)
form 
Powder, Crystals or Needles
color 
White to yellow to beige to brown
Specific Gravity
2.47
Water Solubility 
108 g/100 mL (26 ºC)
Sensitive 
Hygroscopic
Merck 
14,8617
Stability:
Moisture sensitive; do not store in glass (though the completely dry material does not etch glass). Incompatible with strong oxidizing agents.
CAS DataBase Reference
13755-29-8(CAS DataBase Reference)
EPA Substance Registry System
Borate(1-), tetrafluoro-, sodium (13755-29-8)
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Safety Information

Hazard Codes 
C,Xi
Risk Statements 
34
Safety Statements 
45-36/37/39-25-26
RIDADR 
3260
WGK Germany 
1
RTECS 
ED2975000
21
Hazard Note 
Irritant
TSCA 
Yes
HS Code 
2826 90 80

MSDS

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Sodium tetrafluoroborate Usage And Synthesis

Description

Sodium tetrafluoroborate is an organic compound that has the molecular formula NaBF4. The compound is a salt that forms white or colorless water-soluble rhombic crystals. It is less soluble in organic solvents and readily soluble in water.

Preparation

Sodium tetrafluoroborate can be prepared by reacting tetrafluoroboric with sodium carbonate or hydroxide.
NaOH + HBF4 → NaBF4 + H2O
Na2CO3 + 2 HBF4 → 2 NaBF4 + H2O + CO2

Applications

Sodium tetrafluoroborate can be used as a catalyst for the synthesis of bis(indolyl)methanes via electrophilic substitution reaction of indoles with ketones and aldehydes. In the synthesis of ionic liquids such as trihexyl(tetradecyl)phosphonium tetrafluoroborat and 1-butyl-3-methylimidazolium tetrafluoroborate.
In the laboratory, sodium tetrafluoroborate may be used for the synthesis of boron fluoride. It may also be used in the synthesis of fluoroheterocyclic and fluoro-nucleic acids. The compound is also used in metal finishing, fluxes, and plating circuits.

Chemical Properties

white crystals or powder

Uses

Fluorinating agent, see Lawton, Levy, J. Am. Chem. Soc. 77, 6083 (1955).

Safety Profile

Moderately toxic by subcutaneous route. When heated to decomposition it emits toxic fumes of Fand Na2O.

Purification Methods

Crystallise the fluoroborate from hot water (50mL/g) by cooling to 0o. Alternatively, free it from insoluble material by dissolving it in a minimum amount of water; then fluoride ions are removed by adding concentrated lanthanum nitrate in excess. After removing lanthanum fluoride by centrifugation, the supernatant is passed through a cation-exchange column (Dowex 50, Na+-form) to remove any remaining lanthanum [Anbar & Guttman J Phys Chem 64 1896 1960]. It has also been recrystallised from anhydrous MeOH and dried in a vacuum at 70o for 16hours. Keep it dry as it is hygrosopic. [Delville et al. J Am Chem Soc 109 7293 1987.]

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Sodium tetrafluoroborateSupplierMore

J & K SCIENTIFIC LTD.
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Meryer (Shanghai) Chemical Technology Co., Ltd.
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TCI (Shanghai) Development Co., Ltd.
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Beijing dtftchem Technology Co., Ltd.
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13651141086
Email:
dtftchem@sina.com;
Basic information Description Preparation Applications Safety Related Supplier