Heavy Water
| Formula / Notation | D₂O |
|---|---|
| CAS Number | 7789-20-0 |
| Also Known As | Deuterium oxide, deuterated water, D₂O, oxide deuterium |
What is Heavy Water?
Heavy water is water in which both hydrogen atoms are replaced by deuterium (²H or D), the stable isotope of hydrogen with one proton and one neutron. Its chemical formula is D₂O. Heavy water is about 10% denser than ordinary water and has slightly higher melting and boiling points. It is used as a neutron moderator in some nuclear reactors and as a tracer in chemical and biological research.
Formula & Notation
Other Names / Synonyms: Deuterium oxide, deuterated water, D₂O, oxide deuterium
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
Heavy water is water in which both hydrogen atoms are replaced by deuterium (²H or D), the stable isotope of hydrogen with one proton and one neutron. Its chemical formula is D₂O. Heavy water is about 10% denser than ordinary water and has slightly higher melting and boiling points. It is used as a neutron moderator in some nuclear reactors and as a tracer in chemical and biological research.
CANDU nuclear reactor moderator and coolant. Neutron moderation in research reactors. NMR spectroscopy solvent (deuterated solvents). Isotope labeling in chemical and biological research. Metabolic rate studies. Neutron scattering experiments. Production of deuterium and tritium.
Not radioactive — chemically similar to water. If consumed in large amounts (>20% of body water), can disrupt cellular processes and potentially be lethal — disrupts enzymatic reactions. Occupational exposure to high concentrations may cause dizziness. Standard radiation safety procedures apply in r…
The formula or notation for Heavy Water is: D₂O