Molekula
Phosphorus pentoxide 98.5 % min.
Supplying 4,500+ customers in over 80 countries
ISO 9001:2015 & ISO 14001:2015 certified · Supplying laboratories and industry since 2000 · Listed pack sizes are a starting point — we manufacture, source and repack to the quantity you need
Phosphorus pentoxide (P2O5) is a highly hygroscopic and reactive chemical compound primarily used as a powerful desiccant, dehydrating agent, and catalyst in industrial processes, including pharmaceuticals, food processing, and chemical synthesis. It is also employed in the production of specialty chemicals, such as detergents and water-repellent fabrics. This product contains a minimum of 98.5% phosphorus pentoxide (CAS 1314-56-3) with a molecular weight of 141.94 (P2O5). It is stored at ambient conditions and must be handled with extreme caution, as it carries a "Danger" signal word due to its severe corrosive and reactive properties. Molekula supplies phosphorus pentoxide from research to bulk quantities with full documentation and ISO 9001:2015 traceability.
Example image for illustration only. Other packaging and pack sizes are available.
Pricing & pack sizes
Pack sizes & pricing
Pricing on request — packs available from research to bulk quantities.
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 to off white powder |
| Identification | Conforms to reference |
| Assay (P205) | ≥98.5% |
Storage & handling
| Property | Value |
|---|---|
| Storage Temperature | Ambient |
| Transport Class | 8 |
| Packing Group | II |
| Acidity | Acid |
Identification
| Property | Value |
|---|---|
| SKU | 90031914 |
| CAS Number | 1314-56-3 |
| Molecular Formula | P2O5 |
| Molecular Weight | 141.94 |
| Exact Mass | 141.9221 |
| SMILES | O=P(=O)OP(=O)=O |
| InChIKey | YWEUIGNSBFLMFL-UHFFFAOYSA-N |
| InChI | InChI=1S/O5P2/c1-6(2)5-7(3)4 |
| PubChem CID | 6326975 |
| UN Number | UN1807 |
| REACH Code | Y110 |
| TSCA Listed | Yes |
| Tariff Code | 2809100000 |
Safety & GHS
-
Corrosive
GHS05
Hazard statements
- EUH014 Reacts violently with water
- H314 (sub cat. 1A) Causes severe skin burns and eye damage
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
- 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
- P308+313 IF exposed or concerned: Get medical advice/attention
Documents
Safety Data Sheets (SDS)
Available in English, French, German, Italian, 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.
Synonyms
- diphosphonate
- diphosphonate(2-)
- Diphosphorpentaoxid
- mu-oxido-bis(hydridodioxidophosphate)(2-)
- Phosphorus (V) pentoxide
- Phosphorus oxide (P2O5)
- Phosphorus(V) oxide
- XQRLCLUYWUNEEH-UHFFFAOYSA-L
- YWEUIGNSBFLMFL-UHFFFAOYSA-N
Frequently asked questions
What is phosphorus pentoxide (P₂O₅) primarily used for?
Phosphorus pentoxide is widely used as a **strong desiccant** and **dehydrating agent** in laboratories, as well as in the production of **phosphoric acid**, **detergents**, and **specialty chemicals**.
What is the chemical formula and molecular weight of phosphorus pentoxide?
The chemical formula is **P₂O₅**, and the molecular weight is **141.94 g/mol**.
What is the purity grade available for phosphorus pentoxide from Molekula?
Molekula supplies phosphorus pentoxide with a **minimum purity of 98.5%**.
How should phosphorus pentoxide be stored?
Store in a **dry, well-ventilated area at ambient temperature**, away from moisture and incompatible substances, using appropriate protective measures due to its **Danger** signal word classification.
Can Molekula supply phosphorus pentoxide in bulk quantities?
Yes, bulk quantities of phosphorus pentoxide are available upon request—please contact our sales team for specific packaging and pricing details.
What documentation comes with an order of phosphorus pentoxide?
Each order includes a **Certificate of Analysis (CoA)**, **Material Safety Data Sheet (MSDS)**, and **batch-specific documentation** for traceability and compliance.
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.