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429-06-1 - Tetraethylammonium tetrafluoroborate, 99% - A10211 - Alfa Aesar

A10211 Tetraethylammonium tetrafluoroborate, 99%

CAS Number

Size Price ($) Quantity Availability
5g 26.27
50g 101.66
100g 181.28
250g 354.32
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Tetraethylammonium tetrafluoroborate, 99%


Chemical Properties

Formula Weight
Melting point
370-380° dec.
Soluble in water, alcohol and acetonitrile.


Tetraethylammonium tetrafluoroborate is used as a phase transfer catalyst in organic synthesis. It finds application as an electrolyte additive in the capillary electrophoretic separation of polyphenols found in grape seed extracts. It is also used to prepare other tetrabutylammonium salts in aqueous solutions. It is involved in the synthesis of conducting poly(thiophenes).


Hygroscopic. Incompatible with strong oxidizing agents.

Literature References

Electrolyte for electro-organic synthesis, e.g. in the o- and p- hydroxylation of simple aromatic ketones, acids and esters by anodic oxidation in TFA: J. Chem. Soc., Chem. Commun., 262 (1975). In CH3CN, the products are the corresponding o- and p-acetamido compounds (cf Ritter reaction).

Use as a supporting electrolyte and F- source for electrochemical fluorination has also been reported: J. Electroanal. Chem., 43, 318 (1973).

Sivaraman, P.; Shashidhara, K.; Thakur, A. P.; Samui, A. B.; Bhattacharyya, A. R. Nanocomposite solid polymer electrolytes based on polyethylene oxide, modified nanoclay, and tetraethylammonium tetrafluoroborate for application in solid-state supercapacitor. Polym. Eng. Sci. 2015, 55 (7), 1536-1545.

Schütter, C.; Ramirez-Castro, C.; Oljaca, M.; Passerini, S.; Winter, M.; Balducci, A. Activated Carbon, Carbon Blacks and Graphene Based Nanoplatelets as Active Materials for Electrochemical Double Layer Capacitors: A Comparative Study. J. Electrochem. Soc. 2015, 162 (1), A44-A51.

GHS Hazard and Precautionary Statements

Hazard Statements: H331-H302-H312-H315-H319-H335

Toxic if inhaled. Harmful if swallowed. Harmful in contact with skin. Causes skin irritation. Causes serious eye irritation. May cause respiratory irritation.

Precautionary Statements: P261-P280-P305+P351+P338-P304+P340-P311-P362-P301+P312-P312-P405-P501a

Avoid breathing dust/fume/gas/mist/vapours/spray. Wear protective gloves/protective clothing/eye protection/face protection. IF IN EYES: Rinse cautiously with water for several minutes. Remove contact lenses, if present and easy to do. Continue rinsing. IF INHALED: Remove to fresh air and keep at rest in a position comfortable for breathing. Call a POISON CENTER or doctor/physician. Take off contaminated clothing and wash before reuse. IF SWALLOWED: Call a POISON CENTER or doctor/physician if you feel unwell. Store locked up. Dispose of contents/container in accordance with local/regional/national/international regulations.

Other References

Hazard Class
Packing Group
Harmonized Tariff Code


  • H27307

    Lithium bis(trifluoromethylsulfonyl)imide, 98+%
  • 36423

    Acetonitrile, ACS, 99.5+%
  • 42311

    Acetonitrile, anhydrous, 99.8+%
  • 43166

    Acetonitrile, anhydrous, 99.8+%, packaged under Argon in resealable ChemSeal™ bottles
  • J62507

    Tetraethylammonium chloride

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