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Potassium tetrafluoroborate
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  • Name Potassium tetrafluoroborate
  • EINECS237-928-2
  • CAS No. 14075-53-7
  • Density2.505 g/mL at 25 °C(lit.)
  • PSA0.00000
  • LogP1.30000
  • Solubilitywater: 4.4 g/L (20 °C)
  • Melting Point530 °C(lit.)
  • FormulaKBF4
  • Boiling Point960.85 (310 torr)
  • Molecular Weight125.903
  • Flash PointN/A
  • Transport InformationUN 3260
  • Appearancelight gray crystalline powder.
  • Safety37/39-26-45-36/37/39
  • Risk Codes36/37/38-34
  • Molecular Structure
    Molecular Structure of 14075-53-7 (Potassium tetrafluoroborate)
  • Hazard SymbolsIrritantXi,CorrosiveC
  • SynonymsIrritantXi,CorrosiveC
  • Article Data71

Potassium tetrafluoroborate Synthetic route

lithium tetrafluoroborate

potassium dicyanomethoxypentafluoroethylborate

A

lithium dicyanomethoxypentafluoroethylborate

B

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In acetonitrileA 100%
B 99%

potassium chloride

pyridinium tetrafluoroborate

A

110-86-1

pyridine

B

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In water addn. of KCl to C5H5NHBF4; extn. of pyridine with CHCl3, pptn., filtration, washing with a water-alcohol mixture, drying in a hot air oven (about 105°C), elem. anal.;A n/a
B 96%

K2[1,2-C6F4(BF3)2]

7637-07-2

boron trifluoride

A

1,2-C6F4(BF2)2

B

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In dichloromethane (N2); Schlenk technique; BF3 (5 equiv.) was introduced to stirred suspn.of K2(C6F4(BF3)2) in CH2Cl2 at -40°C; after 30 min soln. degasse d in vac. at -78°C; filtered; residue washed (CH2Cl2); solvent from filtrate distd. (vac.);A 84%
B n/a
28625-02-7

thallium(I) tetrafluoroborate

[bis(triphenylphosphine)](o-tolyl)chloronickel

582-25-2

Potassium benzoate

A

thallium chloride

B

Ni(OCOPh)(C6H4-o-Me)(PPh3)2

C

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In tetrahydrofuran Ar atmosphere, stirring of Ni-complex and TlBF4 in THF (20°C, 2 h), removal of pptd. TlCl (filtn.), addn. of K-carboxylate, stirring (20°C, 2 h); removal of pptd. KBF4, partial evapn., pptn. on pentane addn., collection, washing (pentane), drying (vac.); elem. anal.;A n/a
B 78%
C n/a
...Expand
14873-92-8, 20244-83-1, 15337-84-5, 15442-57-6

cis-dichlorobis(diethylsulfide)platinum(II)

2K(1+)*OC(CH3)C(C(O)CH3)C(C(O)CH3)C(CH3)O(2-)=CH3C(OK)C(C(O)CH3)C(C(O)CH3)C(OK)CH3

{Pt(SEt2)2(3,4-diacetyl-2,4-hexadiene-2,5-diolate-C3,O')}

B

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
With N(C2H5)3 In methanol stirred for 16 h; filtered, filtrate evapd., dissolved in CH2Cl2, dried in vac., crystn. (CH2Cl2-diethyl ether); elem. anal.;A 78%
B n/a
With N(C2H5)3 In methanol stirred for 16 h; filtered, filtrate evapd., dissolved in CH2Cl2, addn. of H2O in a separating funnel, shaken, CH2Cl2-phase sepd., removal of solvent under reduced pressure, dried in vac., crystn. (CH2Cl2-diethyl ether); elem. anal.;A 34%
B n/a
28625-02-7

thallium(I) tetrafluoroborate

[bis(triphenylphosphine)](o-tolyl)chloronickel

15922-01-7

potassium 4-nitrobenzoate

A

thallium chloride

B

Ni(OCOC6H4-p-NO2)(C6H4-o-Me)(PPh3)2

C

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In tetrahydrofuran Ar atmosphere, stirring of Ni-complex and TlBF4 in THF (20°C, 2 h), removal of pptd. TlCl (filtn.), addn. of K-carboxylate, stirring (20°C, 2 h); removal of pptd. KBF4, partial evapn., pptn. on pentane addn., collection, washing (pentane), drying (vac.); elem. anal.;A n/a
B 68%
C n/a
...Expand
28625-02-7

thallium(I) tetrafluoroborate

[bis(triphenylphosphine)](o-tolyl)chloronickel

127-08-2

potassium acetate

A

thallium chloride

B

Ni(OCOMe)(C6H4-o-Me)(PPh3)2

C

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In tetrahydrofuran Ar atmosphere, stirring of Ni-complex and TlBF4 in THF (20°C, 2 h), removal of pptd. TlCl (filtn.), addn. of K-carboxylate, stirring (20°C, 2 h); removal of pptd. KBF4, partial evapn., pptn. on pentane addn., collection, washing (pentane), drying (vac.); elem. anal.;A n/a
B 63%
C n/a
...Expand
28625-02-7

thallium(I) tetrafluoroborate

[bis(triphenylphosphine)](o-tolyl)chloronickel

52509-80-5

p-F-C6H4COOK

A

thallium chloride

B

Ni(OCOC6H4-p-F)(C6H4-o-Me)(PPh3)2

C

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In tetrahydrofuran Ar atmosphere, stirring of Ni-complex and TlBF4 in THF (20°C, 2 h), removal of pptd. TlCl (filtn.), addn. of K-carboxylate, stirring (20°C, 2 h); removal of pptd. KBF4, partial evapn., pptn. on pentane addn., collection, washing (pentane), drying (vac.); elem. anal.;A n/a
B 59%
C n/a
...Expand

{(pentacarbonyl)rhenium(μ-η1:η2-vinyl)rhenium(pentacarbonyl)}BF4={(Pentacarbonyl)rhenium(μ-η1:η2-vinyl)rhenium(pentacarbonyl)}BF4

7681-11-0

potassium iodide

A

78670-77-6

{(pentacarbonyl)rhenium(ethylene)}BF4

B

13821-00-6

rhenium pentacarbonyl iodide

C

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
In tetrahydrofuran Rhenium-complex is suspended in THF under N2, addn. of KI, reaction mixture is stirred for 15 h at room temp.; light yellow soln. and a colourless ppt. are obtained, sepn. of ppt. and drying, removal of solvent of yellow soln., addn. of petrolether to resulting ppt., pptn. of (OC)5ReI, drying under vac., sublimation at 60°C, elem. anal.;A n/a
B 45%
C n/a
28625-02-7

thallium(I) tetrafluoroborate

o-fluorophenylbis(triphenylphosphinyl)nickel chloride

127-08-2

potassium acetate

A

thallium chloride

B

Ni(OCOMe)(C6H4-o-F)(PPh3)2

C

14075-53-7

potassium tetrafluoroborate

Conditions
ConditionsYield
With tetrahydrofuran In tetrahydrofuran Ar atmosphere, stirring of Ni-complex and TlBF4 in THF (20°C, 2 h), removal of pptd. TlCl (filtn.), addn. of K-carboxylate, stirring (20°C, 2 h); removal of pptd. KBF4, partial evapn., pptn. on pentane addn., collection, washing (pentane), drying (vac.); elem. anal.;A n/a
B 42%
C n/a
...Expand

Potassium tetrafluoroborate Chemical Properties

Product Name: Potassium tetrafluoroborate (CAS NO.14075-53-7)

Molecular Formula: KBF4
Molecular Weight: 125.90g/mol
Mol File: 14075-53-7.mol
EINECS: 237-928-2
Appearance: white odourlesss crystalline powder
Melting Point: 530 °C(lit.)
Refractive index: 1.3245
Water Solubility: 4.4 g/L (20 °C)
Sensitive: Moisture Sensitive
Stability: Stable. May decompose on exposure to water or moisture. Incompatible with metals.
H-Bond Donor: 0
H-Bond Acceptor: 5
Structure Descriptors of Potassium tetrafluoroborate (CAS NO.14075-53-7):
  IUPAC Name: potassium tetrafluoroborate
  Canonical SMILES: [B-](F)(F)(F)F.[K+]
  InChI: InChI=1S/BF4.K/c2-1(3,4)5;/q-1;+1 
  InChIKey: AKEBROIVCDHVSD-UHFFFAOYSA-N
Product Categories: Inorganic Chemicals; Inorganics

Potassium tetrafluoroborate Uses

 Potassium tetrafluoroborate (CAS NO.14075-53-7) is used in metallurgical industry  and  maked three fluorinated boron
and other  Fluorinated salt raw materials, etc.

Potassium tetrafluoroborate Toxicity Data With Reference

1.    

ipr-rat LD50:240 mg/kg

     14KTAK    Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.
2.    

ipr-mus LD50:590 mg/kg

     14KTAK    Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.
3.    

ipr-rbt LD50:380 mg/kg

     14KTAK    Boron, Metallo-Boron Compounds and Boranes R.M. Adams,New York, NY.: Wiley,1964,693.

Potassium tetrafluoroborate Consensus Reports

Reported in EPA TSCA Inventory.

Potassium tetrafluoroborate Safety Profile

Poison by intraperitoneal route. When heated to decomposition it emits very toxic fumes of F−, K2O, and BOx. Used in sand casting of aluminum and magnesium, grinding, and in resinoid grinding wheels. See also FLUORIDES and BORON COMPOUNDS.
Safety Information of Potassium tetrafluoroborate (CAS NO.14075-53-7):
Hazard Codes: XiIrritant,CCorrosive
Risk Statements: 36/37/38-34 
R36/37/38:Irritating to eyes, respiratory system and skin. 
R34:Causes burns.  
Safety Statements: 37/39-26-45-36/37/39
S37/39:Wear suitable gloves and eye/face protection. 
S26: In case of contact with eyes, rinse immediately with plenty of water and seek medical advice. 
S45:In case of accident or if you feel unwell, seek medical advice immediately (show the label whenever possible.) 
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection.

Potassium tetrafluoroborate Standards and Recommendations

OSHA PEL: TWA 2.5 mg(F)/m3
ACGIH TLV: TWA 2.5 mg(F)/m3; BEI: 3 mg/g creatinine of fluorides in urine prior to shift; 10 mg/g creatinine of fluorides in urine at end of shift.
NIOSH REL: TWA (Inorganic Fluorides) 2.5 mg(F)/m3

Potassium tetrafluoroborate Specification

 Potassium tetrafluoroborate , its CAS NO. is 14075-53-7, the synonyms are Potassium tetrafluoroborate(1-) ; Borate(1-), tetrafluoro-, potassium ; Avogadrite ; Boron potassium fluoride .

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