Deuterium oxide

99 atom % D

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

Quality Level

isotopic purity

99 atom % D




NMR: suitable
bio 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.


25, 100 g in glass bottle
1 kg in glass bottle


NONH for all modes of transport

WGK Germany


Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificate of Analysis

Certificate of Origin

The Exchange Reaction of Hydrogen and Deuterium Oxide.
Crist RH and Dalin GA
J. Chem. Phys. , 2(8), 548-548 (1934)
NMR spectroscopy of saccharide-doped PAGAT dosimeters.
Skyt PS, et al.
Journal of Physics. Conference Series, 573 (2015)
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)

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