1-Butyl-4-methylpyridinium tetrafluoroborate
1-Butyl-4-methylpyridinium tetrafluoroborate (CAS: 343952-33-0) is an ionic liquid with a molecular weight of 237.05 g/mol. This compound serves as a versatile reagent and solvent in various chemical synthesis applications. Its ionic nature allows for unique reaction environments and facilitates specific chemical transformations, making it valuable in specialty synthesis and advanced material research. Tech Serve Solutions supplies this chemical with a high purity assay for demanding laboratory and industrial uses.
- IUPAC
- 1-Butyl-4-picolinium tetrafluoroborate,4MBPBF4
- Synonyms
- 4MBPBF41-Butyl-4-picolinium tetrafluoroborate

Ionic Liquid Solvent
As an ionic liquid, this compound can serve as a non-volatile and thermally stable solvent for a range of organic and inorganic reactions. Its distinct polarity and solvation properties can influence reaction rates and selectivities.
Electrolyte Component
Ionic liquids are often explored as electrolytes in electrochemical applications. The properties of 1-Butyl-4-methylpyridinium tetrafluoroborate may lend themselves to use in batteries, supercapacitors, or other electrochemical devices.
Catalysis
This pyridinium-based ionic liquid can potentially act as a catalyst or a medium for catalytic processes in organic synthesis. Its structure might enable specific interactions with reactants or transition states.
Chemical Synthesis Reagent
It is utilised as a building block or reagent in the synthesis of more complex organic molecules. The tetrafluoroborate anion and pyridinium cation offer specific reactivity profiles.
| Molecular weight | 237.05nitrate (NO3-): ≤25 mg/kg |
|---|---|
| Empirical formula | C10H16BF4Nfluoride (F-): ≤10 mg/kg |
| Assay | ≥97.0% (T) |
| Density | 1.20 g/mL at 20 °C(lit.) |
| Refractive index | n20/D 1.4 |

Hazard statements
- H302Harmful if swallowed
- H315Causes skin irritation
- H319Causes serious eye irritation
Precautionary statements
- P305IF IN EYES
| Protective equipment | Eyeshields, Faceshields, full-face respirator (US), Gloves, multi-purpose combination respirator cartridge (US), type ABEK (EN14387) respirator filter |
|---|---|
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xn |
| Risk statements (R) | 22-36/38 |
| Safety statements (S) | 26 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is 1-Butyl-4-methylpyridinium tetrafluoroborate used for?
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1-Butyl-4-methylpyridinium tetrafluoroborate is primarily used as a versatile ionic liquid solvent and reagent in chemical synthesis, particularly in specialty synthesis applications and potentially as an electrolyte component.
What is the CAS number and formula for 1-Butyl-4-methylpyridinium tetrafluoroborate?
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The CAS number is 343952-33-0. The empirical formula (Hill notation) is C10H16BF4N.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies 1-Butyl-4-methylpyridinium tetrafluoroborate with an assay of ">=97.0% (T)". TSS does not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should 1-Butyl-4-methylpyridinium tetrafluoroborate be handled?
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This compound is harmful if swallowed and causes skin and eye irritation (H302-H315-H319). Handle with appropriate personal protective equipment, including eyeshields, gloves, and suitable respiratory protection. Ensure adequate ventilation and follow safety recommendations, such as P305 + P351 + P338 for accidental eye contact.
How is 1-Butyl-4-methylpyridinium tetrafluoroborate packed and shipped?
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1-Butyl-4-methylpyridinium tetrafluoroborate is carefully packed to ensure safe transit and is available for export globally by Tech Serve Solutions.
How can I request a sample or quote for 1-Butyl-4-methylpyridinium tetrafluoroborate?
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To request a sample or quote, please contact the Tech Serve Solutions sales team via our website or by phone, providing the product name and CAS number (343952-33-0).
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