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HCID 14810Erstellt: 27. Oktober 2026

Phosphorus trioxide

Phosphorus trioxide · phosphorous anhydride · Diphosphorus trioxide · Phosphorus trioxide ISO 9001：2015 REACH

https://huagongshe.com/de/chemical/14810

Molekülstruktur von Phosphorus trioxide

Identifikatoren & physikalische Daten

CAS No.	1314-24-5
Summenformel	P2.O3
Durchschnittliche Molmasse	109,946 g/mol
Monoisotopische Masse	109,93226712 g/mol
SMILES	O=POP=O
InChIKey	XDJWZONZDVNKDU-UHFFFAOYSA-N
PubChem CID	14810
DTXSID	DTXSID00895014

Chemische & physikalische Eigenschaften

XLogP	-1
Polarare Oberfläche (TPSA)	43,4
H-Brücken-Donoren	0
H-Brücken-Akzeptoren	3
Frei drehbare Bindungen	0
Schwere Atome	5
Formalladung	0
Komplexität	34,2
Stoffklassen	Corrosives
Dichte	2.135 @ 21°Cd421 2.135
Siedepunkt	173.1 °C @760 [mm Hg]bp 173.1° in nitrogen atm
Schmelzpunkt	23.8 °C23.8°
Physical Description	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.
Löslichkeit	reacts with H2Oslowly forms H3PO3 in cold H2Oreacts violently in hot H2O forming red P, PH3, and H3PO4 [MER06]
Aggregatzustand	colorless monoclinic crystals or liquid
Farbe	colorless monoclinic crystals, crystalline or liquid
EPA chemische Informationen	Phosphorus trioxide (1314-24-5)

Sicherheit & Vorschriften

Regulatorische Informationen	The 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-Kennzeichnung	Corrosive
Brandgefahren	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.
Gesundheitsgefahren	Excerpt from ERG Guide 157 [Substances - Toxic and/or Corrosive (Non-Combustible / Water-Sensitive)]:· TOXIC and/or CORROSIVEinhalation, ingestion or contact (skin, eyes) with vapors, dusts or substance may cause severe injury, burns or death.
DOT-Nummer und Handbuch	2578 157
Reaktive Gruppe	Acids, Strong Non-oxidizing
Reactivity Alerts	Water-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 trioxideUN2578Class 8 Corrosive material (49 eCFR § 173.136)PG III: the degree of danger presented by the material is minor
Air and Water Reactions	Fumes 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 Categories	Corrosives
Brandbekämpfung

Freisetungsmaßnahmen	· 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.