Tetraoctylphosphonium bromide
Tetraoctylphosphonium bromide (CAS: 23906-97-0) is an organic phosphonium salt with the chemical formula [CH3(CH2)7]4P(Br) and a molecular weight of 563.76 g/mol. This compound serves as a versatile reagent in chemical synthesis, notably as a phase transfer catalyst. Its structure facilitates reactions between immiscible phases, enhancing efficiency in various organic transformations.
![Tetraoctylphosphonium bromide ([CH3(CH2)7]4P(Br)) — chemical structure, CAS 23906-97-0; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F23906-97-0.png&w=3840&q=75)
Phase Transfer Catalysis
Tetraoctylphosphonium bromide acts as an effective phase transfer catalyst, enabling reactions between reactants located in different phases (e.g., aqueous and organic). This improves reaction rates and yields by transporting reactive species across phase boundaries.
Chemical Synthesis Reagent
The compound is employed as a reagent in various organic syntheses. Its phosphonium salt nature allows it to participate in or facilitate diverse chemical transformations, making it valuable in complex molecule construction.
Ionic Liquids Precursor
Tetraoctylphosphonium bromide can be a precursor for the synthesis of specialized ionic liquids. The long alkyl chains contribute to unique solvent properties relevant in catalysis and materials science.
| Molecular weight | 563.76 |
|---|---|
| Linear formula | [CH3(CH2)7]4P(Br) |
| Assay | 97% |
| Impurities tested | <1.5% hydrobromic acid |
| Melting point | 38-43 °C(lit.) |

Hazard statements
- H315Causes skin irritation
- H319Causes serious eye irritation
- H335May cause respiratory irritation
Precautionary statements
- P261Avoid breathing dust, fume, gas or vapours
- P305IF IN EYES
| Protective equipment | dust mask type N95 (US), Eyeshields, Faceshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Flash point | 113 °C / 235.4 °F |
| Transport (UN / ADR) | UN 3261 8 / PGIII |
| Water hazard class (WGK, DE) | 3 |
| Hazard codes (EU) | Xi |
| Risk statements (R) | 36/37/38 |
| 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 Tetraoctylphosphonium bromide used for?
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Tetraoctylphosphonium bromide is primarily used as a phase transfer catalyst and a reagent in general chemical synthesis. It can also serve as a precursor for certain ionic liquids.
What are the CAS number and chemical formula for Tetraoctylphosphonium bromide?
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The CAS number for Tetraoctylphosphonium bromide is 23906-97-0, and its chemical formula is [CH3(CH2)7]4P(Br).
What grade and purity does Tech Serve Solutions supply for Tetraoctylphosphonium bromide?
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Tech Serve Solutions supplies Tetraoctylphosphonium bromide with an assay of 97%. We do not represent this product as USP, BP, EP, or other pharmacopoeia grades.
How should Tetraoctylphosphonium bromide be handled safely?
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Tetraoctylphosphonium bromide is a Warning substance that causes skin irritation (H315), serious eye irritation (H319), and may cause respiratory irritation (H335). Handle with appropriate personal protective equipment including gloves, eyeshields, and a dust mask or respirator, ensuring good ventilation. Avoid breathing dust. Refer to the Safety Data Sheet for full handling precautions.
How is Tetraoctylphosphonium bromide packed and exported?
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Tetraoctylphosphonium bromide is carefully packed to meet international shipping standards for hazardous materials, including UN 3261, Class 8, Packing Group III. Tech Serve Solutions is experienced in exporting fine chemicals globally.
How can I request a quote or sample for Tetraoctylphosphonium bromide?
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To request a quote or a sample of Tetraoctylphosphonium bromide, please contact our sales team through the website or by phone, providing your contact details and the quantity required.
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