Grundinformationen
- Standard-SMILES
O=POP=O- InChIKey
XDJWZONZDVNKDU-UHFFFAOYSA-N- Summenformel
- P2.O3
- Durchschnittliche Molmasse
- 109,946 g/mol
- Monoisotopische Masse
- 109,93226712
Überblick
Phosphorus trioxide appears as white crystalline solid or a liquid (melting point 24 °C). Density 2.14 g / cm3. Toxic and corrosive. May severely irritate skin and eyes. Used to make other chemicals.
Namen und Bezeichner
- Bevorzugter Name
- Phosphorus trioxide
- IUPAC
- Diphosphoxane-1,3-dione
- Englischer Name
- Phosphorus trioxide
- Summenformel
- H4O5P2
- Molmasse
- 145.976282
Namen und Synonyme
Phosphorus trioxideDiphosphorus trioxide1314-24-5UNII-0LTR52K7HK0LTR52K7HKUN2578Phosphorus sesquioxidePHOSPHORUS TRIOXIDE [MI]DTXSID00895014UN-2578RefChem:173925DTXCID701324573
Weitere Namen anzeigen
phosphorous anhydridePhosphorus trioxide ISO 9001：2015 REACH
PHOSPHORUS OXIDE (P2O3)Diphosphortrioxidphosphorous trioxideDiphosphoxane-1,3-dioneSCHEMBL901609Phosphorus trioxide [UN2578] [Corrosive]
Datenbank-Bezeichner
- CAS
1314-24-5- PubChem CID
- 14810
- DTXSID
DTXSID00895014- UNII
- 0LTR52K7HK
Eigenschaften
Berechnete Struktureigenschaften
- XLogP
- -1
- Polarare Oberfläche (TPSA)
- 43,4 Ų
- H-Brücken-Donoren
- 0
- H-Brücken-Akzeptoren
- 3
- Frei drehbare Bindungen
- 0
- Schwere Atome
- 5
- Formalladung
- 0
- Komplexität
- 34,2
Experimentelle und physikochemische Eigenschaften
Chemical ClassesCorrosives
Density2.135 @ 21°C
Boiling Point173.1 °C @760 [mm Hg]
Melting Point23.8 °C
Physical DescriptionPhosphorus trioxide appears as white crystalline solid or a liquid (melting point 24 °C). Density 2.14 g / cm3. Toxic and corrosive. May severely irritate skin and eyes. Used to make other chemicals.
Physikochemische Eigenschaften
- Schmelzpunkt
- 23.8 ° · 23.8°
- Siedepunkt
- 173.1 ° · bp 173.1° in nitrogen atm
- Dichte
- 421 · d421 2.135
- Löslichkeit
- 2 O · reacts with H2O
- Aggregatzustand
- colorless monoclinic crystals or liquid
- Farbe
- colorless monoclinic crystals, crystalline or liquid
- Wasserlöslichkeit
- 3 PO3 · slowly forms H3PO3 in cold H2O; reacts violently in hot H2O forming red P, PH3, and H3PO4 [MER06]
- EPA chemische Informationen
- Phosphorus trioxide (1314-24-5)
Sicherheit und Regulatorisches
Gefahrenhinweise
Regulatory InformationThe New Jersey Worker and Community Right to Know Act requires public and private employers to provide information about hazardous substances at their workplaces. (N.J.S.A. 34:5A-1 et. seq.)
DOT LabelCorrosive
Fire Hazards
Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
· Non-combustible, substance itself does not burn but may decompose upon heating to produce corrosive and/or toxic fumes.
Health Hazards
Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
· TOXIC and/or CORROSIVE; inhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death.
DOT ID and Guide2578 157
Reactive GroupAcids, Strong Non-oxidizing
Reactivity AlertsWater-Reactive
Reactivity Profile
PHOSPHORUS TRIOXIDE reacts exothermically with bases. Melted phosphorus trioxide readily ignites in air. Instantly ignites with a flame of almost blinding brilliance when thrown into oxygen at 50-60 °C [J. Am. Chem. Soc. 125:347. 1924]. Incompatible with ammonia, disulfur dichloride, halogens, oxygen, phosphorus pentachloride, sulfur, sulfuric acid, water [Bretherick, 5th ed., 1995, p. 1778].
DOT Hazard Classification
Phosphorus trioxide
UN2578
Class 8 Corrosive material (49 eCFR § 173.136)
PG III: the degree of danger presented by the material is minor
Air and Water ReactionsFumes in air. Reacts slowly with cold water to give phosphorous acid. Reacts vigorously with hot water to generate red phosphorus, phosphine (highly toxic and flammable) and phosphoric acid [Merck 11th ed. 1989].
Hazard Classes and CategoriesCorrosives
Sicherheit und Schutzausrüstung
Fire FightingExcerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
Accidental Release Measures
· CALL 911. Then call emergency response telephone number on shipping paper. If shipping paper not available or no answer, refer to appropriate telephone number listed on the inside back cover.
· ELIMINATE all ignition sources (no smoking, flares, sparks or flames) from immediate area.
First Aid
Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
General First Aid:
Exposure Control and Personal Protection· Wear positive pressure self-contained breathing apparatus (SCBA).
Nonfire Spill ResponseExcerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
Isolation and Evacuation
Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
Immediate precautionary measure
Protective Action Criteria (PAC)
1.2 [mg/m3]
13 [mg/m3]
79 [mg/m3]
Personal Protective Equipment (PPE)Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:
Emergency Response Planning Guidelines· Note: Some foams will react with the material and release corrosive/toxic gases.
Sicherheitsdaten
- ridadr
- UN 2578
- hazard_class
- 8
- packing_group
- III
Chemie und Industrie
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