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  2. Rare-earth element - Wikipedia

    en.wikipedia.org/wiki/Rare-earth_element

    In 1842 the number of known rare-earth elements had reached six: yttrium, cerium, lanthanum, didymium, erbium, and terbium. Nils Johan Berlin and Marc Delafontaine tried also to separate the crude yttria and found the same substances that Mosander obtained, but Berlin named (1860) the substance giving pink salts erbium , and Delafontaine named ...

  3. United States critical materials list - Wikipedia

    en.wikipedia.org/wiki/United_States_critical...

    The "Final 2023 Critical Materials List" was determined by the United States Department of Energy (DOE), [5] with the Undersecretary for Science and Innovation involvement. . This list incorporates materials deemed critical for energy applications and minerals from the 2022 final list designated by the Department of the Interior through the United States Geological Survey (USG

  4. Critical raw materials - Wikipedia

    en.wikipedia.org/wiki/Critical_raw_materials

    Critical materials : underlying causes and sustainable mitigation strategies. World Scientific Publishing Co. Pte. Ltd. ISBN 9789813271043. Dr. Arda Işıldar & Dr. Eric D. van Hullebusch, ed. (2024). Critical Materials and Sustainability Transition. CRC Press/Balkema. ISBN 978-1-003-21892-0.

  5. Critical Raw Materials Act - Wikipedia

    en.wikipedia.org/wiki/Critical_Raw_Materials_Act

    Figure gives a summary of critical raw materials lists reported by the European Commission in 2011, 2014 and 2017. All critical raw materials are graphically summarised on the periodic table of elements published in review paper "The Critical Raw Materials in Cutting Tools for Machining Applications: A Review". [24] The list was updated in ...

  6. Neodymium - Wikipedia

    en.wikipedia.org/wiki/Neodymium

    Neodymium is a chemical element; it has symbol Nd and atomic number 60. It is the fourth member of the lanthanide series and is considered to be one of the rare-earth metals . It is a hard , slightly malleable , silvery metal that quickly tarnishes in air and moisture.

  7. Chromium - Wikipedia

    en.wikipedia.org/wiki/Chromium

    A large number of chromium(III) compounds are known, such as chromium(III) nitrate, chromium(III) acetate, and chromium(III) oxide. [33] Chromium(III) can be obtained by dissolving elemental chromium in acids like hydrochloric acid or sulfuric acid , but it can also be formed through the reduction of chromium(VI) by cytochrome c7 . [ 34 ]

  8. List of CAS numbers by chemical compound - Wikipedia

    en.wikipedia.org/wiki/List_of_CAS_numbers_by...

    CAS number C 10 H 16 N 2 O 8: Ethylenediaminetetraacetic acid (EDTA) 6381–92–6 C 12 H 22 O 11: sucrose: 57–50–1 C 18 H 29 O 3 S: sodium dodecyl benzenesulfonate: 2155–30–0 C 20 H 25 N 30: Lysergic acid diethylamide (LSD) 50–37–3 C 123 H 193 N 35 O 37: Common serum albumin (macromolecule) 9048–49–1 Ca(AlH 4) 2: calcium ...

  9. List of chemical elements - Wikipedia

    en.wikipedia.org/wiki/List_of_chemical_elements

    A chemical element, often simply called an element, is a type of atom which has a specific number of protons in its atomic nucleus (i.e., a specific atomic number, or Z). [ 1 ] The definitive visualisation of all 118 elements is the periodic table of the elements , whose history along the principles of the periodic law was one of the founding ...