Deuterium oxide, commonly known as heavy water, is a form of water in which the hydrogen atoms are replaced by deuterium, a stable isotope of hydrogen. It is primarily significant for its use as a neutron moderator in nuclear reactors due to the very low neutron-capture cross-section of deuterium, which allows efficient slowing of neutrons.
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The international HS code for DEUTERIUM OXIDE (CAS 7789-20-0) is 2845.10.
2845.10
2845 10 00
Classification per the EU customs inventory ECICS (2026-07 snapshot, HS 2022). National tariff lines and product form can affect the final classification.
deuterated water
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