Molekula
Phosphorus tribromide
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
Phosphorus tribromide (PBr3) is a highly reactive chemical compound primarily used as a brominating agent in organic synthesis, converting alcohols to alkyl bromides and facilitating various coupling reactions. It’s also employed in pharmaceutical and pesticide manufacturing. CAS 7789-60-8, molecular formula PBr3, molecular weight 270.69 g/mol. Store at ambient conditions under inert gas or nitrogen. Signal word: Danger—corrosive, toxic, and reactive with moisture.
Molekula supplies Phosphorus tribromide at >99% purity in 25 g and 100 g packs, from £37.08 inc. VAT. It is in stock for same-day dispatch. Every batch ships with a certificate of analysis, and a safety data sheet is available. 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
In stock — same-day dispatch
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 — £30.90 per pack ex VAT · £37.08 inc. VAT
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100 g — £85.50 per pack ex VAT · £102.60 inc. VAT
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 | Colourless to light yellow fuming liquid |
| Density | >2.85g/cm3 |
| Melting Point | 172 - 177 Deg C |
| Assay | >99% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Neutral |
Literature values
Published physical properties of the substance, not batch specifications.
| Property | Value |
|---|---|
| Appearance | Fuming colorless liquid |
| Odour | Penetrating odor |
| Melting Point | -41.5 °C |
| Boiling Point | 173.2 °C |
| Solubility (other solvents) | Reacts with water, ethanol; soluble in acetone, carbon disulfide |
| Vapour Pressure | 10 mmHg at 47.8 °C |
| Refractive Index | 1.678 |
Source: PubChem CID 24614 (HSDB)
Identification
| Property | Value |
|---|---|
| SKU | 84048251 |
| CAS Number | 7789-60-8 |
| IUPAC Name | tribromophosphane |
| EC Number | 232-178-2 |
| Molecular Formula | PBr3 |
| Molecular Weight | 270.69 |
| Exact Mass | 269.7267 |
| SMILES | P(Br)(Br)Br |
| InChIKey | IPNPIHIZVLFAFP-UHFFFAOYSA-N |
| InChI | InChI=1S/Br3P/c1-4(2)3 |
| PubChem CID | 24614 |
| UN Number | UN1808 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| HTS Code | 2812.90.0090 |
| Tariff Code | 2812900090 |
Safety & GHS
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Corrosive
GHS05
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Health Hazard
GHS07
Hazard statements
- EUH014 Reacts violently with water
- EUH029 Contact with water liberates toxic gas
- H314 (sub cat. 1B) Causes severe skin burns and eye damage
- H335 May cause respiratory irritation
Precautionary statements
- P223 Keep away from any possible contact with water, because of violent reaction and possible flash fire
- P260 Do not breathe dust/fume/gas/mist/vapours/spray
- P280 Wear protective gloves/protective clothing/eye protection/face protection
- P301+310 IF SWALLOWED: Immediately call a POISON CENTER or doctor/physician
- P303+361 IF ON SKIN (or hair): Remove immediately all contaminated clothing. Rinse with water/shower
- 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
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
- Extrema
- IPNPIHIZVLFAFP-UHFFFAOYSA-N
- Phosphorous bromide
- Phosphorous tribromide
- Phosphorus bromide
- Phosphorus bromide (PBr3)
- Phosphorus(III) bromide
- tribromophosphane
- Tribromophosphine
- UN 1808
Frequently asked questions
What is phosphorus tribromide (PBr₃) commonly used for?
Phosphorus tribromide is primarily used as a brominating agent in organic synthesis, converting alcohols to alkyl bromides, and in the production of flame retardants, pesticides, and pharmaceutical intermediates.
What is the molecular formula and molecular weight of phosphorus tribromide?
The molecular formula is PBr₃, and the molecular weight is 270.69 g/mol.
How should phosphorus tribromide be stored?
Store phosphorus tribromide in a cool, dry place at ambient temperature, away from moisture, oxidizing agents, and incompatible materials. Keep containers tightly sealed.
What grades or purities of phosphorus tribromide does Molekula supply?
Molekula supplies phosphorus tribromide with an assay of >99%. Custom specifications may be available upon request.
Can Molekula supply phosphorus tribromide in bulk quantities?
Yes, Molekula can supply phosphorus tribromide in bulk quantities, with packaging options including drums, IBCs, or custom containers depending on order size.
What documentation is provided with an order of phosphorus tribromide?
Each order includes a Certificate of Analysis (CoA), Safety Data Sheet (SDS), and a Material Safety and Handling Guide. Additional documentation, such as a Packing List, may be provided upon request.
Where can I buy Phosphorus tribromide?
Directly from Molekula, which lists Phosphorus tribromide in 25 g and 100 g packs from £37.08 inc. 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.
Is Phosphorus tribromide dangerous goods for shipping?
Yes. Phosphorus tribromide ships as dangerous goods: UN1808, class 8, packing group II.
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.