> **PROTOTYPE:** a suggestion, not an official CIAAW or IUPAC page. Official values are at [ciaaw.org](https://ciaaw.org). # carbon | Property | Value | | --- | --- | | Symbol | C | | Atomic number | 6 | | IRI | `https://hendrikborgelt.github.io/Draft_for_IUPAC_CIAAW-Isotopic-Abundances-and-Atomic-Weights/elements/Carbon` | | Wikidata | [Q623](https://www.wikidata.org/wiki/Q623) | ## Standard atomic weight | Value | Year | Source | Status | Declaration | | --- | --- | --- | --- | --- | | [12.0096, 12.0116] | 2009 | [10.1351/PAC-REP-10-09-14](https://doi.org/10.1351/PAC-REP-10-09-14) | Current | [`AW-C-standard`](../id/AW-C-standard.md) | | 12.0107(8) | 1995 | [10.1351/pac199668122339](https://doi.org/10.1351/pac199668122339) | Deprecated, see [`AW-C-standard`](../id/AW-C-standard.md) | [`AW-C-standard-1995`](../id/AW-C-standard-1995.md) | | 12.011(1) | 1969 | [10.1351/pac197021010091](https://doi.org/10.1351/pac197021010091) | Deprecated, see [`AW-C-standard-1995`](../id/AW-C-standard-1995.md) | [`AW-C-standard-1969`](../id/AW-C-standard-1969.md) | | 12.011 15(5) | 1961 | [10.1021/ja00881a001](https://doi.org/10.1021/ja00881a001) | Deprecated, see [`AW-C-standard-1969`](../id/AW-C-standard-1969.md) | [`AW-C-standard-1961`](../id/AW-C-standard-1961.md) | | 12.011 | 1953 | [10.1039/JR9540004713](https://doi.org/10.1039/JR9540004713) | Deprecated, see [`AW-C-standard-1961`](../id/AW-C-standard-1961.md) | [`AW-C-standard-1953`](../id/AW-C-standard-1953.md) | | 12.010 | 1938 | [10.1039/JR9380001101](https://doi.org/10.1039/JR9380001101) | Deprecated, see [`AW-C-standard-1953`](../id/AW-C-standard-1953.md) | [`AW-C-standard-1938`](../id/AW-C-standard-1938.md) | | 12.01 | 1937 | [10.1039/JR9370001900](https://doi.org/10.1039/JR9370001900) | Deprecated, see [`AW-C-standard-1938`](../id/AW-C-standard-1938.md) | [`AW-C-standard-1937`](../id/AW-C-standard-1937.md) | | 12 | 1931 | [10.1039/JR9310001617](https://doi.org/10.1039/JR9310001617) | Deprecated, see [`AW-C-standard-1937`](../id/AW-C-standard-1937.md) | [`AW-C-standard-1931`](../id/AW-C-standard-1931.md) | | 12 | 1925 | [10.1039/CT9252700913](https://doi.org/10.1039/CT9252700913) | Deprecated, see [`AW-C-standard-1931`](../id/AW-C-standard-1931.md) | [`AW-C-standard-1925`](../id/AW-C-standard-1925.md) | | 12.005 | 1916 | [10.1021/ja02176a001](https://doi.org/10.1021/ja02176a001) | Deprecated, see [`AW-C-standard-1925`](../id/AW-C-standard-1925.md) | [`AW-C-standard-1916`](../id/AW-C-standard-1916.md) | | 12 | 1902 | [10.1007/BF01370337](https://doi.org/10.1007/BF01370337) | Deprecated, see [`AW-C-standard-1916`](../id/AW-C-standard-1916.md) | [`AW-C-standard-1902`](../id/AW-C-standard-1902.md) | ## Isotopes | A | Representative isotopic composition | Year | Source | Declaration | ChEBI | Wikidata | | --- | --- | --- | --- | --- | --- | --- | | [12](../id/C-12.md) | [0.9884, 0.9904] | — | — | [`Abundance-C12`](../id/Abundance-C12.md) | — | [Q1058364](https://www.wikidata.org/wiki/Q1058364) | | [13](../id/C-13.md) | [0.0096, 0.0116] | — | — | [`Abundance-C13`](../id/Abundance-C13.md) | — | [Q1770822](https://www.wikidata.org/wiki/Q1770822) | ## Bibliography
ANNUAL REPORT OF THE INTERNATIONAL COMMITTEE ON ATOMIC WEIGHTS, 1916. (1915). Journal of the American Chemical Society, 37(11), 2449–2452. https://doi.org/10.1021/ja02176a001 CrossRef Scholia
Aston, F. W., Baxter, G. P., Brauner, B., Debierne, A., Leduc, A., Richards, T. W., Soddy, F., & 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. Journal of the Chemical Society, Transactions, 127, 913. https://doi.org/10.1039/ct9252700913 CrossRef Scholia
Atomic weights of the elements 1969. (1970). Pure and Applied Chemistry, 21(1), 91–108. https://doi.org/10.1351/pac197021010091 CrossRef Scholia
Baxter, G. P., Curie, Mme. M., Hönigschmid, O., Lebeau, P., & Meyer, R. J. (1931). First Report of the Committee on the Atomic Weights of the International Union of Chemistry. J. Chem. Soc., 0(0), 1617–1627. https://doi.org/10.1039/jr9310001617 CrossRef Scholia
Baxter, G. P., Hönigschmid, O., & Lebeau, P. (1938). Eighth Report of the Committee on Atomic Weights of the International Union of Chemistry. J. Chem. Soc., 0(0), 1101–1109. https://doi.org/10.1039/jr9380001101 CrossRef Scholia
Cameron, A. E., & Wichers, Edward. (1962). Report of the International Commission on Atomic Weights*(1961). Journal of the American Chemical Society, 84(22), 4175–4197. https://doi.org/10.1021/ja00881a001 CrossRef Scholia
Coplen, T. B. (1996). Atomic weights of the elements 1995 (Technical Report). Pure and Applied Chemistry, 68(12), 2339–2359. https://doi.org/10.1351/pac199668122339 CrossRef Scholia
Hönigschmid, O., & Lebeau, P. (1937). Seventh Report of the Committee on Atomic Weights of the International Union of Chemistry. J. Chem. Soc., 0(0), 1900–1909. https://doi.org/10.1039/jr9370001900 CrossRef Scholia
International atomic weights, 1953. (1954). Journal of the Chemical Society (Resumed), 4713. https://doi.org/10.1039/jr9540004713 CrossRef Scholia
Richards, Baxter, Hinrichsen, Köthner, P., & Pellini, S. (1902). Zur Festsetzung der Atomgewichte. Fresenius’ Zeitschrift für analytische Chemie, 41(2), 139–140. https://doi.org/10.1007/bf01370337 CrossRef Scholia
Wieser, M. E., & Coplen, T. B. (2010). Atomic weights of the elements 2009 (IUPAC Technical Report). Pure and Applied Chemistry, 83(2), 359–396. https://doi.org/10.1351/pac-rep-10-09-14 CrossRef Scholia
## Turtle This resource as a file: [Carbon.ttl](Carbon.ttl) ```turtle # Prototype: a suggestion, not an official CIAAW or IUPAC record. Official values are at https://ciaaw.org @prefix adms: . @prefix chemrof: . @prefix ciaaw: . @prefix ciaaw_draft: . @prefix dcterms: . @prefix element: . @prefix owl: . @prefix qudt: . @prefix rdfs: . @prefix unit: . @prefix xsd: . ciaaw_draft:AW-C-standard-1902 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1916 ; dcterms:issued "1902"^^xsd:gYear ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.00 ] . ciaaw_draft:AW-C-standard a ciaaw:StandardAtomicWeightDeclaration ; dcterms:issued "2009"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1995 ; dcterms:source ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:lowerBound 12.0096 ; qudt:upperBound 12.0116 ; ciaaw:significantFiguresLower 6 ; ciaaw:significantFiguresUpper 6 ] . ciaaw_draft:AW-C-standard-1916 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1925 ; dcterms:issued "1916"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1902 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.005 ] . ciaaw_draft:AW-C-standard-1925 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1931 ; dcterms:issued "1925"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1916 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.000 ] . ciaaw_draft:AW-C-standard-1931 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1937 ; dcterms:issued "1931"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1925 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.00 ] . ciaaw_draft:AW-C-standard-1937 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1938 ; dcterms:issued "1937"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1931 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.01 ] . ciaaw_draft:AW-C-standard-1938 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1953 ; dcterms:issued "1938"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1937 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.010 ] . ciaaw_draft:AW-C-standard-1953 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1961 ; dcterms:issued "1953"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1938 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.011 ] . ciaaw_draft:AW-C-standard-1961 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1969 ; dcterms:issued "1961"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1953 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.01115 ; qudt:standardUncertainty 0.00005 ; ciaaw:significantFigures 7 ; ciaaw:significantFiguresUncertainty 1 ] . ciaaw_draft:AW-C-standard-1969 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard-1995 ; dcterms:issued "1969"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1961 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.011 ; qudt:standardUncertainty 0.001 ; ciaaw:significantFigures 5 ; ciaaw:significantFiguresUncertainty 1 ] . ciaaw_draft:AW-C-standard-1995 a ciaaw:StandardAtomicWeightDeclaration ; dcterms:isReplacedBy ciaaw_draft:AW-C-standard ; dcterms:issued "1995"^^xsd:gYear ; dcterms:replaces ciaaw_draft:AW-C-standard-1969 ; dcterms:source ; owl:deprecated true ; adms:status ; ciaaw:ofElement element:Carbon ; ciaaw:value [ a qudt:QuantityValue ; qudt:hasUnit unit:UNITLESS ; qudt:numericValue 12.0107 ; qudt:standardUncertainty 0.0008 ; ciaaw:significantFigures 6 ; ciaaw:significantFiguresUncertainty 1 ] . element:Carbon a chemrof:ChemicalElement ; rdfs:label "carbon"@en ; ciaaw:currentStandardAtomicWeight ciaaw_draft:AW-C-standard ; ciaaw:hasDeclaration ciaaw_draft:AW-C-standard, ciaaw_draft:AW-C-standard-1902, ciaaw_draft:AW-C-standard-1916, ciaaw_draft:AW-C-standard-1925, ciaaw_draft:AW-C-standard-1931, ciaaw_draft:AW-C-standard-1937, ciaaw_draft:AW-C-standard-1938, ciaaw_draft:AW-C-standard-1953, ciaaw_draft:AW-C-standard-1961, ciaaw_draft:AW-C-standard-1969, ciaaw_draft:AW-C-standard-1995 ; ciaaw:hasIsotope ciaaw_draft:C-12, ciaaw_draft:C-13 ; ciaaw:standardAtomicWeightLower 12.0096 ; ciaaw:standardAtomicWeightUpper 12.0116 ; chemrof:atomic_number 6 ; chemrof:symbol "C" . ``` [All atomic weights](../atomic-weights.md) · [All isotopic abundances](../isotopic-abundances.md)