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Sauerstoffdifluorid
OF2 · difluoroether · Fluorin oxide · Difluoro oxide · Fluorine oxide · Oxygen fluoride · Oxygen difluoride · fluorine monoxide
Identifikatoren & physikalische Daten
| CAS No. | 7783-41-7 |
|---|---|
| Summenformel | F2O |
| Durchschnittliche Molmasse | 53,996 g/mol |
| Monoisotopische Masse | 53,99172106 g/mol |
| SMILES | FOF |
| InChIKey | UJMWVICAENGCRF-UHFFFAOYSA-N |
| PubChem CID | 24547 |
| ChEBI | CHEBI:30494 |
| EC No. | 231-996-7 |
| DTXSID | DTXSID20894009 |
| Lokaler Name | Sauerstoffdifluorid |
Chemische & physikalische Eigenschaften
| XLogP | 1,2 |
|---|---|
| Polarare Oberfläche (TPSA) | 9,2 |
| H-Brücken-Donoren | 0 |
| H-Brücken-Akzeptoren | 3 |
| Frei drehbare Bindungen | 0 |
| Schwere Atome | 3 |
| Formalladung | 0 |
| Komplexität | 2,8 |
| Stoffklassen | Toxic Gases & Vapors -> OxidizersCorrosives |
| Geruch | PECULIAR SMELLFoul odorPeculiar, foul odor. |
| Dichte | 1.90 at -224 °C (LIQ)1.90 @ -224°C1.88(relative gas density)-224°) 1.90 |
| Color/Form | COLORLESS GASYELLOWISH-BROWN WHEN LIQUIDColorless gas [Note: Shipped as a nonliquefied compressed gas]. |
| Löslichkeit | 0.02 % (NIOSH, 2024)6.8 ML GAS/100 ML WATER @ 0 °CINSOL IN HOT WATERSLIGHTLY SOL IN ALKALI & ACIDSLIGHTLY SOL IN WATERSlightly sol in alcoholSolubility in water, ml/100ml at 0 °C: 6.8 (reacts slowly)slightly soluble in H2O6.8mL gas/100mL H2O (0°C) [MER06] |
| Corrosivity | DOES NOT ATTACK GLASS IN COLDCORRODES MERCURY |
| Siedepunkt | -230 °F at 760 mmHg (NIOSH, 2024)-144.75 °C-145 °C-144.8 °C @760 [mm Hg]bp -145.3° |
| Decomposition | WHEN HEATED TO DECOMPOSITION, IT EMITS HIGHLY TOXIC FUMES OF ... /HYDROGEN FLUORIDE/. |
| Schmelzpunkt | -371 °F (NIOSH, 2024)-223.8 °C-224 °C-223.8° |
| Dampfdichte | 1.88 (NIOSH, 2024) - Heavier than airwill sink (Relative to Air)Relative vapor density (air = 1): 1.9 |
| Geruchsschwelle | Odor Threshold Low: 0.09 [ppm]An odor threshold of 0.1 ppm has been reported.Low odor threshold= 0.2 mg/cu mHigh odor threshold= 1.0 mg/cu m |
| Dampfdruck | greater than 1 atm (NIOSH, 2024)760 MM HG @ -144.6 °C>1 atm760 [mm Hg] @-144.6 °C |
| Aggregatzustand | colorless gas |
| Farbe | Colorless gas or yellowish-brown liquid |
| Spezifische Wärmekapazität | Cp(gas): 0.8 J/(g·K), at 25℃ |
| Henry-Konstante | 2.9×10-5 mol/(m3Pa) at 25℃, ref: 735 |
| EPA chemische Informationen | Oxygen difluoride (7783-41-7) |
Sicherheit & Vorschriften
| GHS-Einstufung | DangerH270 (100%): May cause or intensify fireoxidizer [Danger Oxidizing gases]P220, P244, P260, P264, P271, P280, P284, P301+P330+P331, P302+P361+P354, P304+P340, P305+P354+P338, P316, P320, P321, P363, P370+P376, P403, P403+P233, P405, and P501 (click each P-code to see the statement)Aggregated GHS information provided per 22 reports by companies from 1 notifications to the ECHA C&L Inventory. Each notification may be associated with multiple companies. |
|---|---|
| Hazards Identification | Toxic/poison by inhalation (TIH/PIH) |
| 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 | Poison Gas Oxidizer Corrosive |
| Brandgefahren | Excerpt from ERG Guide 124 [Gases - Toxic and/or Corrosive - Oxidizing]:· Substance does not burn but will support combustion.Not combustible but enhances combustion of other substances. Many reactions may cause fire or explosion. Heating will cause rise in pressure with risk of bursting. Risk of fire and explosion. Mixture with water or water vapour explodes violently on spark ignition. |
| Gesundheitsgefahren | Excerpt from ERG Guide 124 [Gases - Toxic and/or Corrosive - Oxidizing]:· TOXIC and/or CORROSIVEmay be fatal if inhaled or absorbed through skin. |
| Gefahrenübersicht | Animals exposed to concentrations above 0.5 ppm experience pulmonary edema and hemorrhage. Laboratory workers developed severe headaches after exposures to parts-per-billion levels. [ACGIH] Causes lachrymation[ICSC] Contact with gas or liquefied gas may cause burns or frostbite[CAMEO] Fluoride levels should be monitored in chronically exposed workers. [HSDB] A corrosive substance that can cause pulmonary edema[ICSC] See FLUORIDES. |
| DOT-Nummer und Handbuch | 2190 124 |
| Reaktive Gruppe |
Anwendungen & Verwendung
Verwenden
Commercial applications of oxygen difluoride are limited. It is used in organic synthesis to prepare fluoropropylenes and acylfluorides. It is used as an oxidizing and fluorinating agent in many preparative reactions and as a monomer in diolefin copolymerization.
Herstellung & Synthese
synthetische
Oxygen difluoride may be prepared by passing fluorine gas slowly through a dilute solution of caustic soda. Usually a 2% solution of NaOH is suitable for the preparation: 2F2 + 2 Na OH → 2NaF + OF2 + H2O At a higher alkali concentration, oxygen is formed: 2F2 + 4NaOH → 4NaF + 2H2O + O2 Oxygen difluoride can be produced by electrolysis of an aqueous solution of HF or, alternatively, electroylzing molten potassium hydrogen difluoride, KHF2, in the presence of water.