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Records of the Commission on Atomic Weights and Isotopic Abundances of IUPAC

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The International Union of Pure and Applied Chemistry (IUPAC) is an association of National Adhering Organizations, which represent the chemists of different member countries. IUPAC was founded in 1919 and its primary purpose is to provide nomenclature and standards for the international field of chemistry. A consistent set of internationally accepted atomic weights was deemed a necessity by the scientific community because of the relevance of these values to science and technology, as well as to trade and commerce. The standard atomic weights of the elements are regularly evaluated, recommended, and published in updated tables by the Commission on Atomic Weights and Isotopic Abundances (CAWIA) of IUPAC. This is a collection of published reports, draft manuscripts, correspondence, and reprints generated by the CAWIA of IUPAC. A portion of the collection has been digitized and is available online.

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Business correspondence

Letter from Alfred O. C. Nier to Edward Wichers
- 1957-Jan-08
Concerns atomic weight scales, and Nier's work at precision determination of masses.
- Addressee Wichers, Edward
- Author Nier, Alfred O. (Alfred Otto), 1911-1994
- Contributor International Union of Pure and Applied Chemistry
- Subject Nier, Alfred O. (Alfred Otto), 1911-1994, Physics, International Union of Pure and Applied Chemistry, Atomic weights
Business correspondence

Letter from Niels Bohr to Jean Gerard
- 1941-Oct-06
Letter sent to the Secretary General of IUPAC in Paris during the Nazi occupation of World War II.
- Addressee Gerard, Jean
- Author Bohr, Niels, 1885-1962
- Contributor International Union of Pure and Applied Chemistry
- Subject Hahn, Otto, 1879-1968, Hevesy, Georg von, 1885-1966, Aston, Francis William, 1877-1945, Bohr, Niels, 1885-1962, International Union of Pure and Applied Chemistry, Nobel Prize winners
Business correspondence

Letter from Irène Joliot-Curie to Monsieur [Raymond] Delaby
- 1947-Mar-07
Letter from Irène Joliot-Curie (1897-1956) to Raymond Delaby (1891-1958), general-secretary of the International Union of Pure and Applied Chemistry (IUPAC) concerning the appointment of Norwegian radiochemist Ellen…
- Author Joliot-Curie, Irène, 1897-1956
- Contributor International Union of Pure and Applied Chemistry
- Addressee Delaby, Raymond
- Subject Joliot-Curie, Irène, 1897-1956, International Union of Pure and Applied Chemistry, Nobel Prize winners, Women Nobel Prize winners, Women chemists, Women in science, Gleditsch, Ellen, 1879-1968
Business correspondence

Letter from Robert S. Mulliken to J. Bousquet
- 1938-Dec-06
Concerns modifications to the International Table of Isotopes for 1939.
- Addressee Bousquet, J.
- Author Mulliken, Robert Sanderson
- Contributor International Union of Pure and Applied Chemistry
- Subject Isotopes, Aston, Francis William, 1877-1945, Mulliken, Robert Sanderson, International Union of Pure and Applied Chemistry, Lutetium, Dempster, Arthur Jeffrey, Nobel Prize winners
Business correspondence

Letter from Frederick Soddy to Jean Gerard
- 1921-Dec-03
Concerns receipt of report from IUPAC.
- Addressee Gerard, Jean
- Author Soddy, Frederick, 1877-1956
- Contributor International Union of Pure and Applied Chemistry
- Subject International Union of Pure and Applied Chemistry, Soddy, Frederick, 1877-1956, Nobel Prize winners
Business correspondence

Letter from Frédéric Joliot-Curie to Jean Gerard
- 1940-Apr-10
- Addressee Gerard, Jean
- Author Joliot-Curie, Frédéric
- Contributor International Union of Pure and Applied Chemistry
- Subject International Union of Pure and Applied Chemistry, Nobel Prize winners, Joliot-Curie, Frédéric
Business correspondence

Letter from Richard Kuhn to Jean Gerard
- 1939-Jun-05
Concerns the appointment of M. F. Joliot-Curie to IUPAC's Committee on Atomic Weights and Isotopic Abundances.
- Addressee Gerard, Jean
- Author Kuhn, Richard, 1900-1967
- Contributor International Union of Pure and Applied Chemistry
- Subject International Union of Pure and Applied Chemistry, Nobel Prize winners, Joliot-Curie, Frédéric, Kuhn, Richard, 1900-1967
Business correspondence

Letter from Glenn T. Seaborg to the IUPAC
- 1939-Oct-13
Concerns request for a copy of the Fourth Report of the Committee on Atoms of the International Union of Chemistry.
Business correspondence

Nomination form signed by Hans von Euler
- 1937-Apr-26
Concerns von Euler's approval of Marcus L. Oliphant and Robert S. Mulliken to the Commission Internationales des Atomes.
- Contributor International Union of Pure and Applied Chemistry
- Creator Of Work Euler, Hans von, 1873-1964
- Subject Oliphant, Mark, 1901-2000, Euler, Hans von, 1873-1964, Mulliken, Robert Sanderson, International Union of Pure and Applied Chemistry
Business correspondence

Letter from Francis Aston to the Secretary of IUPAC
- 1937-Mar-27
Concerns committee work on atomic weights and measurements as well as isotopic weights.
Business correspondence

Letter from Otto Hahn to Jean Gerard
- 1936-Apr-04
- Addressee Gerard, Jean
- Author Hahn, Otto, 1879-1968
- Contributor International Union of Pure and Applied Chemistry
- Subject Hahn, Otto, 1879-1968, Aston, Francis William, 1877-1945, International Union of Pure and Applied Chemistry, Nobel Prize winners
Business correspondence

Letter from Marie Curie to the President of the International Union of Pure and Applied Chemistry (IUPAC)
- 1930-Oct-31
Letter from Marie Curie (1867-1934) to Einar Biilman, President of the International Union of Pure and Applied Chemistry (IUPAC) concerning an invitation to serve on IUPAC's Commission on Atomic Weights. Curie expresses…
- Author Curie, Marie, 1867-1934
- Contributor International Union of Pure and Applied Chemistry
- Subject Curie, Marie, 1867-1934, International Union of Pure and Applied Chemistry, Nobel Prize winners, Women Nobel Prize winners, Women chemists, Women in science
Business correspondence

Letter from Theodore William Richards to Charles Moureu
- 1921-May-14
Concerns receipt of International Report on Atomic Weights, and regrets for being unable to attend June meeting in Bruxelles.
- Addressee Moureu, Charles, 1863-1929
- Author Richards, Theodore W. (Theodore William), 1868-1928
- Contributor International Union of Pure and Applied Chemistry
- Subject Conant, James Bryant, 1893-1978, Richards, Theodore W. (Theodore William), 1868-1928, Atomic weights, Moureu, Charles, 1863-1929

Digital Collections

Records of the Commission on Atomic Weights and Isotopic Abundances of IUPAC

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Letter from Alfred O. C. Nier to Edward Wichers

Letter from Niels Bohr to Jean Gerard

Letter from Irène Joliot-Curie to Monsieur [Raymond] Delaby

Letter from Robert S. Mulliken to J. Bousquet

Letter from Frederick Soddy to Jean Gerard

Letter from Frédéric Joliot-Curie to Jean Gerard

Letter from Richard Kuhn to Jean Gerard

Letter from Glenn T. Seaborg to the IUPAC

Nomination form signed by Hans von Euler

Letter from Francis Aston to the Secretary of IUPAC

Letter from Otto Hahn to Jean Gerard

Letter from Marie Curie to the President of the International Union of Pure and Applied Chemistry (IUPAC)

Letter from Theodore William Richards to Charles Moureu

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