Editing Dalton (unit) (section)

=== Unit name ===
In 1993, the IUPAC proposed the shorter name "dalton" (with symbol "Da") for the unified atomic mass unit.<ref name=mills1993/><ref name=goldbDa/> As with other unit names such as watt and newton, "dalton" is not capitalized in English, but its symbol, "Da", is capitalized. The name was endorsed by the [[International Union of Pure and Applied Physics]] (IUPAP) in 2005.<ref name=iupap2005/>

In 2003 the name was recommended to the BIPM by the [[Consultative Committee for Units]], part of the [[CIPM]], as it "is shorter and works better with [SI] prefixes".<ref name=bipm-ccu15/> In 2006, the BIPM included the dalton in its 8th edition of the [[SI]] brochure of formal definitions as a [[non-SI units accepted for use with the SI|non-SI unit accepted for use with the SI]].<ref name=bipm8th/> The name was also listed as an alternative to "unified atomic mass unit" by the [[International Organization for Standardization]] in 2009.<ref name=ISO1/><ref name=ISO10/> It is now recommended by several scientific publishers,<ref name=oxsty/> and some of them consider "atomic mass unit" and "amu" deprecated.<ref name=rapsty/> In 2019, the BIPM retained the dalton in its 9th edition of the [[SI]] brochure, while dropping the unified atomic mass unit from its table of non-SI units accepted for use with the SI, but secondarily notes that the dalton&nbsp;(Da) and the unified atomic mass unit&nbsp;(u) are alternative names (and symbols) for the same unit.<ref name=bipm9th/>