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Deuterium oxide

99.9 atom % D, glass distilled

Heavy water, Water-d2
Empirical Formula (Hill Notation):
CAS Number:
Molecular Weight:
EC Number:
MDL number:
PubChem Substance ID:

Quality Level

isotopic purity

99.9 atom % D




NMR: suitable


101.4 °C (lit.)


3.8 °C (lit.)

SMILES string




InChI key


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General description

Deuterium oxide (D2O) also known as heavy water is deuterated water. It is safe and inexpensive source of deuterium (D) for the D/H exchange reactions. The equilibrium constant for the exchange of deuterium between hydrogen (H) and D2O molecules has been determined. Reports suggest that gelatin gels prepared in D2O show higher rigidity than gels prepared in water. The influence of temperature on the heat capacity of deuterium in crystalline and liquid state was studied calorimetrically and its melting point, enthalpy and entropy of fusion were determined. Its utility as a potential therapeutic agent in treating human pancreatic cancer has been studied.


Deuterium oxide may be used in the following processes:
  • As an NMR solvent.
  • Preparation of β-deuterated alcohols.
  • For the adsorption of neutrons in atomic reactors.
  • Deuterium transfer agent in combination with hexamethyldisilane in the preparation of 1,2-dideuterioalkenes from alkynes.


100 g in glass bottle

Storage Class Code

10 - Combustible liquids



Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

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Certificate of Origin

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Starla D Glover et al.
Methods in enzymology, 614, 87-106 (2019-01-07)
Isotopic labeling of recombinantly expressed proteins is generally required for investigation by modern nuclear magnetic resonance (NMR) methods. Purification strategies of the labeled proteins often include the use of a polyhistidine affinity tag (His-tag) and immobilized metal ion affinity chromatography
Ruthenium-Catalyzed Regioselective Deuteration of Alcohols at the β-Carbon Position with Deuterium Oxide.
Tse SKS, et al.
Chemistry (Weinheim An Der Bergstrasse, Germany), 17(49), 13918-13925 (2011)
Gelatin gels in deuterium oxide.
Oakenfull D and Scott A.
Food Hydrocolloids, 17(2), 207-210 (2003)
Thermodynamic properties of deuterium oxide in the temperature range from 6 to 350K.
Smirnova NN, et al.
The Journal of Chemical Thermodynamics, 38(7), 879-883 (2006)
The Exchange Reaction of Hydrogen and Deuterium Oxide.
Crist RH and Dalin GA
J. Chem. Phys. , 2(8), 548-548 (1934)

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