Back Fosforpentoksied Afrikaans خماسي أكسيد الفسفور Arabic فوسفور پنتااوکسید AZB ফসফরাস পেন্টক্সাইড Bengali/Bangla Fosfor-pentoksid BS Pentaòxid de difòsfor Catalan Oxid fosforečný Czech Phosphorpentoxid German Fosfora pentaoksido Esperanto Óxido de fósforo(V) Spanish

Phosphorus pentoxide

Phosphorus pentoxide
Phosphorus pentoxide
Phosphorus pentoxide
Phosphorus pentoxide
Phosphorus pentoxide
Names
IUPAC names
Tetraphosphorus decaoxide
Tricyclo[3.3.1.13,7]tetraphosphoxane 1,3,5,7-tetraoxide
Systematic IUPAC name
2,4,6,8,9,10-Hexaoxa-1λ5,3λ5,5λ5,7λ5-tetraphosphatricyclo[3.3.1.13,7]decane 1,3,5,7-tetraoxide
Other names
Diphosphorus pentoxide
Phosphorus(V) oxide
Phosphoric anhydride
Tetraphosphorus decaoxide
Tetraphosphorus decoxide
Identifiers
3D model (JSmol)
ChEBI
ChemSpider
ECHA InfoCard 100.013.852 Edit this at Wikidata
RTECS number
  • TH3945000
UNII
  • InChI=1S/O10P4/c1-11-5-12(2)8-13(3,6-11)10-14(4,7-11)9-12 checkY
    Key: DLYUQMMRRRQYAE-UHFFFAOYSA-N checkY
  • molecular form: O=P13OP2(=O)OP(=O)(O1)OP(=O)(O2)O3
  • crystal o′ form: P12(=O)OP3(=O)OP4(=O)OP5(=O)OP6(=O)OP(=O)(O1)OP7(=O)OP(=O)OP(=O)OP(=O)(O2)OP(=O)OP(=O)OP(=O)(O3)OP(=O)OP(=O)OP(=O)(O4)OP(=O)OP(=O)OP(=O)(O5)OP(=O)OP(=O)OP(=O)(O6)OP(=O)OP(=O)(O7)O
Properties
P4O10
Molar mass 283.9 g mol−1
Appearance White powder
Very deliquescent
Odor Odorless
Density 2.39 g/cm3
Melting point 340 °C (644 °F; 613 K)
Boiling point 360 °C (sublimes)
exothermic hydrolysis
Vapor pressure 1 mmHg @ 385 °C (stable form)
Hazards
Occupational safety and health (OHS/OSH):
Main hazards
 reacts with water, strong dehydrating agent, corrosive
GHS labelling:
GHS05: Corrosive
Danger
H314
P280, P301+P330+P331, P303+P361+P353, P305+P351+P338, P310
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 0: Will not burn. E.g. waterInstability 3: Capable of detonation or explosive decomposition but requires a strong initiating source, must be heated under confinement before initiation, reacts explosively with water, or will detonate if severely shocked. E.g. hydrogen peroxideSpecial hazard W: Reacts with water in an unusual or dangerous manner. E.g. sodium, sulfuric acid
3
0
3
W
Safety data sheet (SDS) MSDS
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).

Phosphorus pentoxide is a chemical compound with molecular formula P4O10 (with its common name derived from its empirical formula, P2O5). This white crystalline solid is the anhydride of phosphoric acid. It is a powerful desiccant and dehydrating agent.

Developed by StudentB