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lanthanum    音标拼音: [l'ænθənəm]
n. 镧



lanthanum
n 1: a white soft metallic element that tarnishes readily;
occurs in rare earth minerals and is usually classified as
a rare earth [synonym: {lanthanum}, {La}, {atomic number 57}]

Lanthanum \Lan"tha*num\ (l[a^]n"th[.a]*n[u^]m), n. [NL., fr. Gr.
lanqa`nein to lie hid, to be concealed.] (Chem.)
A rare element of the rare earth group of the metals, of
atomic number 57, allied to aluminum. It occurs in certain
rare minerals, as cerite, gadolinite, orthite, etc., and was
so named from the difficulty of separating it from cerium,
didymium, and other rare earth elements with which it is
usually associated. Atomic weight 138.9. Symbol La. [Formerly
written also {lanthanium}.]
[1913 Webster]


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  • MBMG Fact Sheet 46: Critical Mineral: Lanthanum
    Lanthanum (La) is a chemical element included on the U S Geological Survey’s Final 2025 List of Critical Miner-als La is a lanthanide, and is the lightest of the light rare earth elements (REE)
  • Microsoft Word - 57_Lanthanum_SDS. docx - Ames Lab
    Conditions for Safe Storage, Including Any Incompatibilities: Lanthanum metal should be stored in tightly-closed containers under argon or mineral oil Keep away from sparks, heat and flame
  • Overview of Experience with Phoslock and Phosphorus . . .
    Southern California lakes with cyanobacteria blooms can have pH in the range that can be problematic Can leak back off Alum in anoxic situations We needed new tech, found Phoslock in 2010 and began use Phoslock company is in process of closing, EutroSORB is replacement Lanthanum technology
  • Group Name: Lanthanum and its simple compounds General . . . - ECHA
    he ERVs quoted above and reported in many registration dossiers Registrants of Lanthanum chloride anhydrous (EC 233-237-5) are invited to consider the information available, and updat
  • PRODUCT MONOGRAPH NAT-LANTHANUM
    The effect of food on the bioavailability of NAT-LANTHANUM has not been evaluated, but the timing of food intake relative to lanthanum administration (during and 30 minutes after food intake) has a negligible effect on the systemic level of lanthanum
  • A critical review of lanthanum and lanthanum-based materials . . .
    In particular, lanthanum (La) and La-based materials have garnered attention in recent years due to their versatile properties and wide range of potential applications
  • LANTHANUM SAFETY DATA SHEET - angstromsciences
    Precautionary Statements: P210: Keep away from heat sparks open flames hot surfaces - No smoking P280: Wear protective gloves protective clothing eye protection face protection P231 + P2 : Handle under inert as Protect from moisture P370 + P378: In case of fire: Use special powder for meta fires; Do not use water P402 +





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