Phosphorus Pentoxide is a high-oxidation-state phosphorus oxide used as an industrial chemical raw material and processing agent, also commonly referred to as phosphorus(V) oxide or diphosphorus pentoxide in technical documentation. Identified by CAS 1314-56-3, it exhibits strong affinity for water and readily participates in dehydration reactions through conversion to phosphoric acids. It is typically applied as an ultra-dry dehydrating agent in industrial chemical processing and controlled reaction systems where moisture removal is critical. From a supply perspective, this product is available with competitive factory pricing, customized specifications, and complete documentation including MSDS, TDS, COA, supporting stable bulk supply for regulated industrial use.
Phosphorus Pentoxide CAS 1314-56-3
- CAS: 1314-56-3
- Synonyms: Phosphorus(V) oxide, Diphosphorus pentoxide, Phosphoric anhydride, P2O5
- Einecs: 215-236-1
- Molecular Formula: P2O5
- Grade: Industrial grade 99%
- Package: 200kg iron drum or 50kg plastic drum packaging
Product Description
Product name: phosphorus pentoxide
Also known as: phosphorus oxide
Chemical formula: P2O5
Molecular weight: 141.94
CAS accession number: 1314-56-3
EINECS accession number: 215-236-1
Melting point: 340°C
Boiling point: 360 °C (sublimation)
Water solubility: soluble in water
Density: 2.39 g/cm3
Appearance: White powder, with the smell of garlic flashing unknown
Application: desiccant, widely used; Used as a desiccant for gases and liquids; Organically synthesized dehydrators, polyester resins anti-static agents, pharmaceuticals and sugar refining agents. It is the parent raw material for the preparation of high-purity phosphoric acid, phosphate, phosphide and phosphate esters. It can also be used in the manufacture of phosphate pentoxide sols and aerosols mainly H-type. It is used to manufacture glass, UV-transmitting glass, insulating glass, glass-ceramic, and opalescent glass, etc., to improve the dispersion coefficient and ability of glass to transmit ultraviolet light. It is used as a desiccant, dehydrating agent, refining agent of sugar, and is used to prepare phosphoric acid, phosphorus compounds and aerosols as doping sources, dehydrating desiccant agents, organic synthetic condensants and surfactants for semiconductor silicon.
FAQ - Technical & Supply Chain
-
Q:
Is P₂O₅ mainly used as a dehydrating agent rather than a finished product?
A: Yes. It is primarily used as a dehydrating or drying agent within industrial and chemical processing systems, not as a finished end-use material. -
Q:
Why is it described as “ultra-dry”?
A: The term refers to its strong moisture-absorbing and dehydration capability, which allows it to remove water efficiently under controlled industrial conditions.
Documents and Product Support
For product review and sourcing evaluation, supporting documents can be coordinated according to the product type, inquiry stage, and order requirements.
- COA for batch-based quality reference
- TDS for key physical and chemical information
- SDS / MSDS for handling, storage, and safety reference
- Packing information for sample, trial, and bulk orders
- Technical communication based on application and specification requirements
Information to Confirm Before Quotation
Clear sourcing information helps reduce specification mismatch and allows a more accurate quotation before sample or bulk order discussion.
- Product name and CAS number
- Application or intended end use
- Required purity, grade, or specification
- Sample quantity, trial order, or bulk demand
- Preferred packing form or net weight
- Destination country or port
- Required documents or compliance expectations
Packaging, Storage, and Handling Notes
Packaging form, storage conditions, shelf life, and shipment arrangements should be confirmed according to the product characteristics, package size, and destination requirements.
Before order confirmation, buyers are advised to review the corresponding product documents and confirm whether any special storage, labeling, or handling requirements apply.
Sample, Bulk Order and Repeat Supply Support
Support can be arranged for sample discussion, bulk supply planning, packaging confirmation, and routine sourcing communication based on the actual product and order requirements.
For repeat-use formulations or long-term procurement plans, buyers may discuss specification consistency, packaging preferences, delivery expectations, and document coordination in advance.
