Molekula
Tetraphenylphosponium bromide
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 1999 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Tetraphenylphosphonium bromide is an organophosphorus compound used primarily as a phase-transfer catalyst in organic synthesis, facilitating reactions between hydrophobic and hydrophilic reagents. It is a white to off-white crystalline solid with high solubility in polar organic solvents. This chemical has a CAS number of 2751-90-8, a molecular formula of (C6H5)4P(Br), and a molecular weight of 419.29 g/mol. It should be stored at ambient conditions and handled with caution, as it carries a warning signal word for potential hazards.
Molekula supplies Tetraphenylphosponium bromide at ≥99% purity in 25 g and 100 g packs, from $49.80 excl. VAT. It is made or sourced to order. Every batch ships with a certificate of analysis, and safety data sheets are available in 6 languages. Larger quantities, up to multi-tonne, are quoted on request.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
On backorder — expected to ship by 5 December 2026
These pack sizes aren't a limit. Molekula manufactures, sources and repacks to order — if you need 500 kg and only see 1 kg listed, . We quote from grams to multi-tonne.
Need a different size? Add the nearest pack and change the size in your basket — we price it at the same rate per unit.
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25 g — $49.80 per pack
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100 g — $97.60 per pack
Need a different quantity or pack?
Tell us how much you need and when — drums, IBCs, sacks or a one-off bulk lot. We'll manufacture or source it and come back with a price.
Prices exclude VAT/sales tax and shipping.
Specifications
| Property | Value |
|---|---|
| Appearance | White crystalline powder |
| Melting Point | 294 - 297 Deg C |
| Water | ≤0.5% |
| Identification | Conforms to reference |
| Assay | ≥99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Flash Point | 260 °C |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 11361154 |
| CAS Number | 2751-90-8 |
| Molecular Formula | (C6H5)4P(Br) |
| Molecular Weight | 419.29 |
| SMILES | C1=CC=C(C=C1)[P+](C2=CC=CC=C2)(C3=CC=CC=C3)C4=CC=CC=C4.[Br-] |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2931590080 |
| Tariff Code | 2931599090 |
Safety & GHS
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Health Hazard
GHS07
Hazard statements
- H315 Causes skin irritation
- H319 Causes serious eye irritation
- H335 May cause respiratory irritation
Precautionary statements
- P261 Avoid breathing dust/fume/gas/mist/vapours/spray
- P301+330 IF SWALLOWED: Rinse mouth. Do NOT induce vomiting
- P302+350 IF ON SKIN: Gently wash with soap and water
- P304+340 IF INHALED: Remove victim to fresh air and keep at rest in a position comfortable for breathing
- P305+351+338 IF IN EYES: Rinse with water for several minutes. Remove contact lenses if present and easy to do. Continue rinsing
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, Portuguese, Spanish.
Certificate of Analysis (CoA) by batch
Enter a lot or batch number to retrieve the CoA for that specific batch. We can generate one from spec data if no PDF is on file.
Quality certificates
Molekula Group is certified to ISO 9001:2015 (quality) and ISO 14001:2015 (environmental management), audited by a UKAS-accredited body. Both certificates are valid to 17 May 2028.
Synonyms
No alternate names recorded for this product.
Frequently asked questions
What is tetraphenylphosphonium bromide commonly used for?
Tetraphenylphosphonium bromide is primarily used as a phase-transfer catalyst in organic synthesis, particularly in reactions like the Williamson ether synthesis and alkylation of carbanions.
What is the chemical formula and molecular weight of tetraphenylphosphonium bromide?
The chemical formula is (C6H5)4P(Br), and the molecular weight is 419.29 g/mol.
How should tetraphenylphosphonium bromide be stored?
Store at ambient temperature in a cool, dry place, away from moisture and direct sunlight.
What grades or purities of tetraphenylphosphonium bromide does Molekula offer?
Molekula supplies tetraphenylphosphonium bromide with an assay of ≥99%, suitable for laboratory and industrial applications.
Can Molekula supply tetraphenylphosphonium bromide in bulk quantities?
Yes, Molekula can provide tetraphenylphosphonium bromide in bulk, with quantities tailored to meet your specific requirements.
What documentation is provided with an order of tetraphenylphosphonium bromide?
Each order includes a Certificate of Analysis (CoA), Material Safety Data Sheet (MSDS), and batch-specific documentation for traceability.
Where can I buy Tetraphenylphosponium bromide?
Directly from Molekula, which lists Tetraphenylphosponium bromide in 25 g and 100 g packs from $49.80 excl. VAT, with a certificate of analysis for every batch. Larger quantities are quoted on request. Molekula's offices: United Kingdom, France, Spain, Germany, Italy, United States and China.
Ready to order or need a custom pack?
Tell us the product, grade, and quantity — Molekula usually responds within one working day with pricing and lead time.