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278955

Sigma-Aldrich

Potassium tetrafluoroborate

96%

Synonym(s):

Potassium borofluoride

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About This Item

Linear Formula:
KBF4
CAS Number:
14075-53-7
Molecular Weight:
125.90
EC Number:
237-928-2
MDL number:
MFCD00011395
UNSPSC Code:
12352302
PubChem Substance ID:
24856844
NACRES:
NA.23

Quality Level

100

Assay

96%

form

powder

mp

530 °C (lit.)

density

2.505 g/mL at 25 °C (lit.)

SMILES string

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

InChI

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

InChI key

AKEBROIVCDHVSD-UHFFFAOYSA-N

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General description

Potassium tetrafluoroborate is a white crystalline salt with a low melting point. It is used as a reagent in organic synthesis, high-efficiency electrolyte additive, and in electroplating applications.

Application

Potassium tetrafluoroborate can be used as:
  • An additive to perovskite precursor solution for preparing wide bandgap perovskite films for solar cells.
  • An electrolyte additive in potassium ion and Li-ion batteries to enhance stability and performance.
  • A reagent in the synthesis of bis-N-heterocyclic carbene (NHC) ruthenium complex.
  • An electroplating solution to prepare metal coatings and alloys.

Storage Class Code

11 - Combustible Solids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

PDSCL

Deleterious substance

PRTR

Class I Designated Chemical Substances

ISHL Indicated Name

Substances Subject to be Indicated Names

ISHL Notified Names

Substances Subject to be Notified Names

JAN Code

278955-2KG:
278955-VAR:
278955-25G:4548173129242
278955-BULK:
278955-500G:4548173129259

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Certificates of Analysis (COA)

Lot/Batch Number
0000323955
MKCV6605
0000323955
MKCV4335
MKCS1003

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Potassium tetrafluoroborate-induced defect tolerance enables efficient wide-bandgap perovskite solar cells
Yue Yu, et al.
Journal of Colloid and Interface Science, 605, 710-717 (2022)
Effects of a nano carbide coating fabricated by EB-PVD on the interfacial stability of aluminide coated superalloy
Wangqiang Peng, et al.
Materials Characterization, 193, 112290-112290 (2022)
Effect of KBF4 additive on high voltage cycling performance of lithium-ion batteries
Zhaoming Qin, et al.},
Journal of Electroanalytical Chemistry, 871, 114325-114325 (2020)
Cationic Bis-N-Heterocyclic Carbene(NHC) Ruthenium Complex: Structure and Application as Latent Catalyst in Olefin Metathesis
Mathieu Rouen, et al.
Chemistry?A European Journal , 20, 13716-13721 (2014)
Yulia Kaluzhny et al.
Alternatives to laboratory animals : ATLA, 43(2), 101-127 (2015-05-23)
The 7th Amendment to the EU Cosmetics Directive and the EU REACH Regulation have reinforced the need for in vitro ocular test methods. Validated in vitro ocular toxicity tests that can predict the human response to chemicals, cosmetics and other

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