C16H36BrP
339.33 g/mol
Research ReagentDanger
Tetrabutylphosphonium bromide
CAS3115-68-2EC221-487-8
Category
Research Reagent
Compound Class
Other
Primary Use
Research Compound
Tetrabutylphosphonium bromide is a quaternary phosphonium salt commonly utilized as a phase transfer catalyst in organic synthesis. Its structure consists of a tetrabutylphosphonium cation paired with a bromide anion, facilitating the transfer of reactants between immiscible phases.
phase transfer catalyst in organic reactionsreagent for nucleophilic substitution reactionscatalyst for two-phase synthesis processes
Content scope: Information here supports chemical identification and industrial supply, research, and manufacturing contexts. It is not a therapeutic claim, medical advice, or drug-use instructions.
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Related Compounds
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Safety Reference
Danger
H302Harmful if swallowed
H311Toxic in contact with skin
H315Causes skin irritation
H317May cause an allergic skin reaction
H318Causes serious eye damage
H335May cause respiratory irritation
H411Toxic to aquatic life with long lasting effects
H401Toxic to aquatic life
Customs Tariff Classification
The international HS code for Tetrabutylphosphonium bromide (CAS 3115-68-2) is 2931.49.
HS code (international, 6-digit)
2931.49
EU CN code (8-digit)
2931 49 80
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
Identifiers
IUPAC Name
tetrabutylphosphanium bromide
InChIKey
RKHXQBLJXBGEKF-UHFFFAOYSA-M
SMILES
CCCC[P+](CCCC)(CCCC)CCCC.[Br-]
Synonyms (7)
- PX 4B
- TBP Br
- Tetrabutylphosphonium
- Tetrabutylphosphonium bromide
- tetrabutylphosphanium;bromide
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