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  • PID: si:nonsiallowedunit:dalton
  • Definition: A mass equal to 1.66053906660(50) x 10-27 kg
  • Source: SI Brochure 9th Edition, page 145
  • Scaling Factor: 1.6605390666E-27 kg
  • Status: Valid
  • Valid: 2019-05-20 -
  • Note: The dalton (Da) and the unified atomic mass unit (u) are alternative names (and symbols) for the same unit, equal to 1/12 of the mass of a free carbon 12 atom, at rest and in its ground state. This value of the dalton is the value recommended in the CODATA 2018 adjustment.
  • Related Definitions
    • hasAllowedNonSIUnitSymbol -> Da