Deuteriumoxid
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- CAS-Nr.
- 7789-20-0
- Bezeichnung:
- Deuteriumoxid
- Englisch Name:
- DEUTERIUM OXIDE
- Synonyma:
- D2O;Deuterated water;WATER-D2;HEAVY WATER;heavywater-d2;water,heavy(d2-o);Heavy water, Water-d2;Ice-d;Ice-d2;Water-d
- CBNumber:
- CB3736883
- Summenformel:
- D2O
- Molgewicht:
- 20.03
- MOL-Datei:
- 7789-20-0.mol
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Deuteriumoxid Eigenschaften
- Schmelzpunkt:
- 3.8 °C(lit.)
- Siedepunkt:
- 101.4 °C
- Dichte
- 1.107 g/mL at 25 °C
- Dampfdruck
- 27.464hPa at 25℃
- Brechungsindex
- n20/D 1.328(lit.)
- Flammpunkt:
- 101.4°C
- storage temp.
- Store below +30°C.
- pka
- pK (25°) 14.955 (molarity scale); 16.653 (mole fraction scale): A. K. Covington et al., J. Phys. Chem. 70, 3820 (1966)
- Aggregatzustand
- Liquid
- Farbe
- Colorless
- Relative polarity
- 0.991
- PH
- 7 (H2O, 20℃)
- Wasserlöslichkeit
- Miscible with water.
- Sensitive
- Moisture Sensitive
- Merck
- 14,2940
- Dielectric constant
- 78.3（25℃）
- Stabilität:
- Stable. Hygroscopic.
- InChIKey
- XLYOFNOQVPJJNP-ZSJDYOACSA-N
- CAS Datenbank
- 7789-20-0(CAS DataBase Reference)
- EPA chemische Informationen
- Water-d2 (7789-20-0)
Deuteriumoxid Chemische Eigenschaften,Einsatz,Produktion Methoden
S-Sätze Betriebsanweisung:
S24/25:Berührung mit den Augen und der Haut vermeiden.
Chemische Eigenschaften
colourless liquid
Verwenden
Deuterium Oxide is used to prepare specifically labelled isotopologs of organic compounds.
Definition
deuterium oxide: Water in which hydrogen atoms, 1H,are replaced by the heavier isotopedeuterium, 2H (symbol D). It is acolourless liquid, which forms hexagonalcrystals on freezing. Its physicalproperties differ from those of ‘normal’water; r.d. 1.105; m.p. 3.8°C; b.p.101.4°C. Deuterium oxide, D
2O, occursto a small extent (about 0.003%by weight) in natural water, fromwhich it can be separated by fractionaldistillation or by electrolysis. Itis useful in the nuclear industry becauseof its ability to reduce the energiesof fast neutrons to thermalenergies and because its absorptioncross-section is lower than that of hydrogenand consequently it does notappreciably reduce the neutron flux.In the laboratory it is used for labellingother molecules for studies ofreaction mechanisms. Water alsocontains the compound HDO.
Allgemeine Beschreibung
Deuterium oxide (D
2O) is a 100% isotopically enriched NMR (Nuclear Magnetic Resonance) solvent. It is widely employed in high resolution NMR studies. Various thermodynamic properties (such as intermolecular vibrational frequencies, energy of the hydrogen bond, free energy, enthalpy and entropy) of liquid deuterium oxide have been evaluated. Ionization constant for D
2O (in the range of 5-50°C), pK values (at 25°C) and enthalpy, entropy, heat capacity change (for the dissociation of D
2O) have been reported.
läuterung methode
Distil it from alkaline KMnO4 [de Giovanni & Zamenhof Biochem J 92 79 1963]. NOTE that D2O invariably contains tritiated water and will therefore be RADIOACTIVE; always check the radioactivity level of D2O in a scintillation counter before using.
Deuteriumoxid Upstream-Materialien And Downstream Produkte
Upstream-Materialien
Downstream Produkte
Deuteriumoxid Anbieter Lieferant Produzent Hersteller Vertrieb Händler.
Global( 209)Lieferanten
7789-20-0(Deuteriumoxid)Verwandte Suche:
- schweresWasser
- DEUTERIUM OXIDE, "100" (MIN. 99.96 ATOM% D) GLASS DISTILLED
- DEUTERIUM OXIDE ULTRA-D (MIN 99.999 ATOM% D)
- DEUTERIUM OXIDE, 99.9 ATOM % D, LOW TRIT IUM CONTENT (CA. 150 DPM/ML T3O)
- DEUTERIUM OXIDE, 90 ATOM % D
- DEUTERIUM OXIDE, "100" (MIN. 99.96 ATOM% D)(1PK=10 X 0.75ML)
- DEUTERIUM OXIDE, ULTRA-D (MIN. 99.999 ATOM % D)(1PK=10 X 0.75ML)
- DEUTERIUM OXIDE (GLASS DISTILLED) 99.9%
- DEUTERIUM OXIDE, "100" (MIN. 99.96 ATOM% D)(1PK=10 X 0.5ML)
- DEUTERIUM OXIDE, 99.9 ATOM % D
- DEUTERIUM OXIDE, 99.9 ATOM % D (WITH STA NDARD)
- DEUTERIUM OXIDE, 99.9 ATOM % D (CONTAINS
- DEUTERIUM OXIDE, 100.00 ATOM % D (1PK=10 X 0.25ML)
- DEUTERIUM OXIDE, "100" (MIN. 99.96 ATOM&
- DEUTERIUM OXIDE DEUTERATION DEGREE MIN. 99,98 ATOM % D
- DEUTERIUM OXIDE, 99.9 ATOM % D (CONTAINS 0.05% W/W DSS)
- DEUTERIUM OXIDE, 99.9 ATOM % D (1PK=5 X 0.5ML)
- DEUTERIUM OXIDE, "100" (MIN. 99.96 ATOM% D)(1PK=10 X 1ML)
- DEUTERIUM OXIDE, "100" (MIN. 99.990 ATOM% D)(1PK=10 X 0.5ML)
- DEUTERIUM OXIDE, 99.9 ATOM % D (1PK = 10
- DEUTERIUM OXIDE, 99 ATOM % D
- DEUTERIUM OXIDE, "100" (MIN. 99.990 ATOM% D)
- DEUTERIUM OXIDE, STANDARD, 99.98 +/-0.01 ATOM % D
- DEUTERIUM OXIDE, 99.9 ATOM % D (CONTAINS 0.05 WT. % TSP-D4)
- DEUTERIUM OXIDE, 99.9 ATOM % D (1PK=10 X 1ML)
- DEUTERIUM OXIDE, 99.9 ATOM % D (1PK=10 X 0.75ML)
- DEUTERIUM OXIDE, EXTRA (MIN. 99.996 ATOM % D)
- Deuterium oxide, isotopic purity 99.9+%
- Deuteriumoxide,99.95+%(Isotopic)
- WATER DEUTERIUM H2O
- Deuterium oxide, 100.0 atom % D, for NMR
- Deuterium oxide, 99.8 atom % D, for NMR
- Deuterium oxide, low in paramagnetic impurities, 100.0 atom % D, for NMR
- Deuterium oxide, packaged in 0.75 ml ampules, 100.0 atom % D, for NMR
- Deuterium oxide, packaged in 0.75 ml ampules, 99.9 atom % D, for NMR
- Deuterium oxide,for NMR,100.0 atom % D
- Deuterium oxide [99.9atom%D, for NMR]
- Deuterium oxide, deuteration degree min. 99,8%, NMR spectroscopy grade, Spectrosol
- Deuterium oxide, deuteration degree min. 99,95%, NMR spectroscopy grade, Spectrosol
- DEUTERIUM OXIDE EXTRA 99.994 ATOM ％ D
- DeuteriuM Oxide
- DeuteriuM oxide ,0% [99.9atoM%D, for NMR]
- DeuteriuM oxide, for NMR, 99.8 atoM % D, AcroSeal
- DeuteriuM oxide, for NMR, packaged in 0.75 Ml aMpoules, 100.0 atoM % D
- DeuteriuM oxide, for NMR, packaged in 0.75 Ml aMpoules, 99.9 atoM % D
- DeuteriuM oxide, for NMR, packaged in 0.75Ml aMpoules, 99.8 atoM% D
- DeuteriuM oxide, 99.8 atoM % D, for NMR 100ML
- DeuteriuM oxide, 99.8 atoM % D, for NMR 10ML
- DeuteriuM oxide, packaged in 0.75 Ml aMpoules, 100.0 atoM % D, for NMR 7.5ML
- DeuteriuM oxide, packaged in 0.75 Ml aMpoules, 99.9 atoM % D, for NMR 7.5ML
- Water-d2
- Deuterium oxide, 100.0 atom % D
- Deuterium Oxide "100%"
- Deuterium Oxide (low conductivity)
- Deuterium oxide, 99.9+% (Isotopic)
- Deuterium oxide, packaged in 0.75 ml ampoules, 99.9 atom % D, for NMR
- Deuterium oxide, 100 atom % D, AcroSeal, for NMR
- Deuterium oxide, packaged in 0.75ml ampoules, 99.8 atom% D, for NMR
