Description

Phosphonium, butyltriphenyl-, bromide (1:1) (CAS No. 1779-51-7) is a high-purity quaternary phosphonium salt with the molecular formula C₂₂H₂₄BrP. This compound, also known as butyl(triphenyl)phosphanium bromide, is a versatile reagent widely used in organic synthesis, catalysis, and material science. Its well-defined structure and stability make it ideal for phase-transfer catalysis (PTC), ionic liquid formulations, and as a precursor for ylide generation in Wittig reactions. Our product is rigorously tested to ensure ≥98% purity (HPLC), with low levels of residual solvents and heavy metals, meeting the stringent requirements of research and industrial applications. Supplied as a white to off-white crystalline powder, it is packaged under inert conditions to guarantee long-term stability and performance consistency.

Properties

• CAS Number: 1779-51-7
• Complexity: 273
• IUPAC Name: butyl(triphenyl)phosphonium;bromide
• InChI: InChI=1S/C22H24P.BrH/c1-2-3-19-23(20-13-7-4-8-14-20,21-15-9-5-10-16-21)22-17-11-6-12-18-22;/h4-18H,2-3,19H2,1H3;1H/q+1;/p-1
• InChI Key: IKWKJIWDLVYZIY-UHFFFAOYSA-M
• Exact Mass: 398.07990
• Molecular Formula: C22H24BrP
• Molecular Weight: 399.3
• SMILES: CCCC[P+](C1=CC=CC=C1)(C2=CC=CC=C2)C3=CC=CC=C3.[Br-]
• Monoisotopic Mass: 398.07990
• Synonyms: N-Butyltriphenylphosphonium bromide, Phosphonium, butyltriphenyl-, bromide (1:1), Phosphonium, butyltriphenyl-, bromide, butyl(triphenyl)phosphonium bromide, n-Butyltriphenylphosphonium chloride, EINECS 217-219-4, NSC 59684, DTXSID90883581, DTXCID201023097, 217-219-4, 918-205-7, Butyltriphenylphosphonium bromide, 1779-51-7, (1-Butyl)Triphenylphosphonium Bromide, butyl(triphenyl)phosphanium;bromide, MFCD00011855, NSC-59684, btppbr, butyl(triphenyl)phosphanium,bromide, Hishicolin BTPPBr, SCHEMBL1063, 97KU95HRS8, Triphenylbutylphosphonium bromide, CHEMBL4792223, butyl triphenylphosphonium bromide, butyl(triphenyl)phosphonium iodide, butyl-triphenyl phosphonium bromide, triphenyl butyl phosphonium bromide, BCP22515, n-butyl-triphenylphosphonium bromide, NSC59684, (1-Butyl)triphenylphosphoniumbromide, n-butyl triphenyl-phosphonium bromide, AKOS015963276, Butyltriphenylphosphonium bromide (TBP), Butyltriphenylphosphonium bromide, 99%, CS-W009726, FB36892, AS-12138, DB-005492, B0970, NS00127516, B-0970, F10027, 1-ethyl-3-methylimidazolium perfluorobutanesulfonate

Application

Butyltriphenylphosphonium bromide is extensively employed as a phase-transfer catalyst in organic reactions, facilitating the migration of reactants between immiscible phases. It serves as a key intermediate in the synthesis of Wittig reagents for olefination reactions, enabling the formation of alkenes from aldehydes/ketones. Additionally, this phosphonium salt is utilized in the preparation of ionic liquids and as a stabilizer in polymer chemistry. Its applications extend to electrolyte additives in battery research due to its ionic conductivity properties.

Safety and Hazards

GHS Hazard Statements

• H301 (82.3%): Toxic if swallowed [Danger Acute toxicity, oral]
• H302 (17.7%): Harmful if swallowed [Warning Acute toxicity, oral]
• H311 (78.8%): Toxic in contact with skin [Danger Acute toxicity, dermal]
• H312 (17.7%): Harmful in contact with skin [Warning Acute toxicity, dermal]
• H315 (82.7%): Causes skin irritation [Warning Skin corrosion/irritation]
• H319 (82.7%): Causes serious eye irritation [Warning Serious eye damage/eye irritation]
• H330 (78.3%): Fatal if inhaled [Danger Acute toxicity, inhalation]
• H335 (81.9%): May cause respiratory irritation [Warning Specific target organ toxicity, single exposure; Respiratory tract irritation]
• H412 (78.3%): Harmful to aquatic life with long lasting effects [Hazardous to the aquatic environment, long-term hazard]

Precautionary Statements

• P260, P261, P262, P264, P264+P265, P270, P271, P273, P280, P284, P301+P316, P301+P317, P302+P352, P304+P340, P305+P351+P338, P316, P317, P319, P320, P321, P330, P332+P317, P337+P317, P361+P364, P362+P364, P403+P233, P405, and P501

Hazard Classes and Categories

• Acute Tox. 3 (82.3%)
• Acute Tox. 4 (17.7%)
• Acute Tox. 3 (78.8%)
• Acute Tox. 4 (17.7%)
• Skin Irrit. 2 (82.7%)
• Eye Irrit. 2 (82.7%)
• Acute Tox. 2 (78.3%)
• STOT SE 3 (81.9%)
• Aquatic Chronic 3 (78.3%)

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Disclaimer: Sold exclusively for laboratory research. Prohibited for commercial use, diagnostics, or human/animal applications. Buyers assume all compliance liability.