PROTOTYPE: a suggestion, not an official CIAAW or IUPAC page. Official values are at ciaaw.org.
IUPAC Project 2019-020-2-024Linked-data suggestion · unofficial prototype

Revision Example

The new value on this page is invented. It only demonstrates what the data looks like after a revision. It is not a CIAAW value, not even a proposed one.

When CIAAW revises a value, nothing is edited or deleted. The converter compares the new table with the previous output and then:

  1. creates a new declaration with the new value,
  2. moves the element's current pointer to it,
  3. flags the old declaration as deprecated and links the two, and
  4. keeps every declaration in the element's history.

hydrogen

flowchart LR
    Hydrogen["element:Hydrogen"]
    AW_H_standard_2027["ciaaw_draft:AW-H-standard-2027<br/>[1.007 85, 1.008 12]<br/>current"]
    Hydrogen -- "ciaaw:hasDeclaration" --> AW_H_standard_2027
    Hydrogen == "ciaaw:currentStandardAtomicWeight" ==> AW_H_standard_2027
    AW_H_standard_2009["ciaaw_draft:AW-H-standard-2009<br/>[1.007 84, 1.008 11]<br/>deprecated"]
    Hydrogen -- "ciaaw:hasDeclaration" --> AW_H_standard_2009
    AW_H_standard_2009 -- "dcterms:isReplacedBy" --> AW_H_standard_2027
Value Year Source Status Declaration
[1.007 85, 1.008 12] 2027 — Current AW-H-standard-2027
[1.007 84, 1.008 11] 2009 — Deprecated, see AW-H-standard-2027 AW-H-standard-2009

The complete file is under Downloads.