> **PROTOTYPE:** a suggestion, not an official CIAAW or IUPAC page. Official values are at [ciaaw.org](https://ciaaw.org).

# sodium

| Property | Value |
| --- | --- |
| Symbol | Na |
| Atomic number | 11 |
| IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Sodium` |
| Wikidata | [Q658](https://www.wikidata.org/wiki/Q658) |

## Standard atomic weight

| Value | Year | Source | Status | Declaration |
| --- | --- | --- | --- | --- |
| 22.989 769 28(2) | 2005 | [10.1351/pac200678112051](https://doi.org/10.1351/pac200678112051) | Current | [`AW-Na-standard`](../id/AW-Na-standard.md) |
| 22.989 770(2) | 1995 | [10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) | Deprecated, see [`AW-Na-standard`](../id/AW-Na-standard.md) | [`AW-Na-standard-1995`](../id/AW-Na-standard-1995.md) |
| 22.989 768(6) | 1985 | [10.1351/pac198658121677](https://doi.org/10.1351/pac198658121677) | Deprecated, see [`AW-Na-standard-1995`](../id/AW-Na-standard-1995.md) | [`AW-Na-standard-1985`](../id/AW-Na-standard-1985.md) |
| 22.989 77(1) | 1971 | [10.1351/pac197230030637](https://doi.org/10.1351/pac197230030637) | Deprecated, see [`AW-Na-standard-1985`](../id/AW-Na-standard-1985.md) | [`AW-Na-standard-1971`](../id/AW-Na-standard-1971.md) |
| 22.9898(1) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-Na-standard-1971`](../id/AW-Na-standard-1971.md) | [`AW-Na-standard-1969`](../id/AW-Na-standard-1969.md) |
| 22.9898 | 1961 | [10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) | Deprecated, see [`AW-Na-standard-1969`](../id/AW-Na-standard-1969.md) | [`AW-Na-standard-1961`](../id/AW-Na-standard-1961.md) |
| 22.991 | 1953 | [10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) | Deprecated, see [`AW-Na-standard-1961`](../id/AW-Na-standard-1961.md) | [`AW-Na-standard-1953`](../id/AW-Na-standard-1953.md) |
| 22.997 | 1925 | [10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) | Deprecated, see [`AW-Na-standard-1953`](../id/AW-Na-standard-1953.md) | [`AW-Na-standard-1925`](../id/AW-Na-standard-1925.md) |
| 23 | 1909 | [10.1021/ja01931a001](https://doi.org/10.1021/ja01931a001) | Deprecated, see [`AW-Na-standard-1925`](../id/AW-Na-standard-1925.md) | [`AW-Na-standard-1909`](../id/AW-Na-standard-1909.md) |
| 23.05 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-Na-standard-1909`](../id/AW-Na-standard-1909.md) | [`AW-Na-standard-1902`](../id/AW-Na-standard-1902.md) |


## Isotopes

| A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata |
| --- | --- | --- | --- | --- | --- | --- |
| [23](../id/Na-23.md) | 1 | — | — | [`Abundance-Na23`](../id/Abundance-Na23.md) | — | [Q2265714](https://www.wikidata.org/wiki/Q2265714) |

## Bibliography

<div class="csl-bib-body">
<div class="csl-entry">Aston, F. W., Baxter, G. P., Brauner, B., Debierne, A., Leduc, A., Richards, T. W., Soddy, F., &#38; Urbain, G. (1925). Second Report of the International Committee of the International Union of Pure and Applied Chemistry on the chemical elements. International atomic weights, 1925. <i>Journal of the Chemical Society, Transactions</i>, <i>127</i>, 913. https://doi.org/10.1039/ct9252700913 <a href="https://doi.org/10.1039/CT9252700913">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/CT9252700913">Scholia</a></div>
<div class="csl-entry">Atomic weights of the elements 1969. (1970). <i>Pure and Applied Chemistry</i>, <i>21</i>(1), 91–108. https://doi.org/10.1351/pac197021010091 <a href="https://doi.org/10.1351/pac197021010091">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac197021010091">Scholia</a></div>
<div class="csl-entry">Atomic Weights of the Elements 1971. (1972). <i>Pure and Applied Chemistry</i>, <i>30</i>(3–4), 637–650. https://doi.org/10.1351/pac197230030637 <a href="https://doi.org/10.1351/pac197230030637">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac197230030637">Scholia</a></div>
<div class="csl-entry">Atomic weights of the elements 1985. (1986). <i>Pure and Applied Chemistry</i>, <i>58</i>(12), 1677–1692. https://doi.org/10.1351/pac198658121677 <a href="https://doi.org/10.1351/pac198658121677">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac198658121677">Scholia</a></div>
<div class="csl-entry">Cameron, A. E., &#38; Wichers, Edward. (1962). <b>Report of the International Commission on Atomic Weights<sup>*</sup>(1961)</b>. <i>Journal of the American Chemical Society</i>, <i>84</i>(22), 4175–4197. https://doi.org/10.1021/ja00881a001 <a href="https://doi.org/10.1021/ja00881a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja00881a001">Scholia</a></div>
<div class="csl-entry">Clarke, F. W., Ostwald, W., Thorpe, T. E., &#38; Urbain, G. (1909). REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS. 1909. <i>Journal of the American Chemical Society</i>, <i>31</i>(1), 1–6. https://doi.org/10.1021/ja01931a001 <a href="https://doi.org/10.1021/ja01931a001">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1021/ja01931a001">Scholia</a></div>
<div class="csl-entry">Coplen, T. B. (1996). Atomic weights of the elements 1995 (Technical Report). <i>Pure and Applied Chemistry</i>, <i>68</i>(12), 2339–2359. https://doi.org/10.1351/pac199668122339 <a href="https://doi.org/10.1351/pac199668122339">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac199668122339">Scholia</a></div>
<div class="csl-entry">International atomic weights, 1953. (1954). <i>Journal of the Chemical Society (Resumed)</i>, 4713. https://doi.org/10.1039/jr9540004713 <a href="https://doi.org/10.1039/JR9540004713">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1039/JR9540004713">Scholia</a></div>
<div class="csl-entry">Richards, Baxter, Hinrichsen, Köthner, P., &#38; Pellini, S. (1902). Zur Festsetzung der Atomgewichte. <i>Fresenius’ Zeitschrift für analytische Chemie</i>, <i>41</i>(2), 139–140. https://doi.org/10.1007/bf01370337 <a href="https://doi.org/10.1007/BF01370337">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1007/BF01370337">Scholia</a></div>
<div class="csl-entry">Wieser, M. E. (2006). Atomic weights of the elements 2005 (IUPAC Technical Report). <i>Pure and Applied Chemistry</i>, <i>78</i>(11), 2051–2066. https://doi.org/10.1351/pac200678112051 <a href="https://doi.org/10.1351/pac200678112051">CrossRef</a> <a href="https://qlever.scholia.wiki/doi/10.1351/pac200678112051">Scholia</a></div>
</div>

## Turtle

This resource as a file: [Sodium.ttl](Sodium.ttl)

```turtle
# Prototype: a suggestion, not an official CIAAW or IUPAC record. Official values are at https://ciaaw.org

@prefix adms: <http://www.w3.org/ns/adms#> .
@prefix chemrof: <https://w3id.org/chemrof/> .
@prefix ciaaw: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/ciaaw-draft#> .
@prefix ciaaw_draft: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/id/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix element: <https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix unit: <http://qudt.org/vocab/unit/> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

ciaaw_draft:AW-Na-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1909 ;
    dcterms:issued "1902"^^xsd:gYear ;
    dcterms:source <https://doi.org/10.1007/BF01370337> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 23.05 ] .

ciaaw_draft:AW-Na-standard a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:issued "2005"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1995 ;
    dcterms:source <https://doi.org/10.1351/pac200678112051> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.98976928 ;
            qudt:standardUncertainty 0.00000002 ;
            ciaaw:significantFigures 10 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Na-standard-1909 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1925 ;
    dcterms:issued "1909"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1902 ;
    dcterms:source <https://doi.org/10.1021/ja01931a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 23.00 ] .

ciaaw_draft:AW-Na-standard-1925 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1953 ;
    dcterms:issued "1925"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1909 ;
    dcterms:source <https://doi.org/10.1039/CT9252700913> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.997 ] .

ciaaw_draft:AW-Na-standard-1953 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1961 ;
    dcterms:issued "1953"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1925 ;
    dcterms:source <https://doi.org/10.1039/JR9540004713> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.991 ] .

ciaaw_draft:AW-Na-standard-1961 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1969 ;
    dcterms:issued "1961"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1953 ;
    dcterms:source <https://doi.org/10.1021/ja00881a001> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.9898 ] .

ciaaw_draft:AW-Na-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1971 ;
    dcterms:issued "1969"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1961 ;
    dcterms:source <https://doi.org/10.1351/pac197021010091> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.9898 ;
            qudt:standardUncertainty 0.0001 ;
            ciaaw:significantFigures 6 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Na-standard-1971 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1985 ;
    dcterms:issued "1971"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1969 ;
    dcterms:source <https://doi.org/10.1351/pac197230030637> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.98977 ;
            qudt:standardUncertainty 0.00001 ;
            ciaaw:significantFigures 7 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Na-standard-1985 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard-1995 ;
    dcterms:issued "1985"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1971 ;
    dcterms:source <https://doi.org/10.1351/pac198658121677> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.989768 ;
            qudt:standardUncertainty 0.000006 ;
            ciaaw:significantFigures 8 ;
            ciaaw:significantFiguresUncertainty 1 ] .

ciaaw_draft:AW-Na-standard-1995 a ciaaw:StandardAtomicWeightDeclaration ;
    dcterms:isReplacedBy ciaaw_draft:AW-Na-standard ;
    dcterms:issued "1995"^^xsd:gYear ;
    dcterms:replaces ciaaw_draft:AW-Na-standard-1985 ;
    dcterms:source <https://doi.org/10.1351/pac199668122339> ;
    owl:deprecated true ;
    adms:status <http://purl.org/adms/status/Deprecated> ;
    ciaaw:ofElement element:Sodium ;
    ciaaw:value [ a qudt:QuantityValue ;
            qudt:hasUnit unit:UNITLESS ;
            qudt:numericValue 22.989770 ;
            qudt:standardUncertainty 0.000002 ;
            ciaaw:significantFigures 8 ;
            ciaaw:significantFiguresUncertainty 1 ] .

element:Sodium a chemrof:ChemicalElement ;
    rdfs:label "sodium"@en ;
    ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-Na-standard ;
    ciaaw:hasDeclaration ciaaw_draft:AW-Na-standard,
        ciaaw_draft:AW-Na-standard-1902,
        ciaaw_draft:AW-Na-standard-1909,
        ciaaw_draft:AW-Na-standard-1925,
        ciaaw_draft:AW-Na-standard-1953,
        ciaaw_draft:AW-Na-standard-1961,
        ciaaw_draft:AW-Na-standard-1969,
        ciaaw_draft:AW-Na-standard-1971,
        ciaaw_draft:AW-Na-standard-1985,
        ciaaw_draft:AW-Na-standard-1995 ;
    ciaaw:hasIsotope ciaaw_draft:Na-23 ;
    ciaaw:standardAtomicWeightUncertainty 0.00000002 ;
    ciaaw:standardAtomicWeightValue 22.98976928 ;
    chemrof:atomic_number 11 ;
    chemrof:symbol "Na" .
```

[All atomic weights](../atomic-weights.md) · [All isotopic abundances](../isotopic-abundances.md)