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barium(0)

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Origin: China

Cas No: 7440-39-3

Specification: 99%min

Min order Quantity: 1 /kg

Supply Ability: 50 mt/month

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  • Products Specification
  • Product Description
  • Property

    CAS No.: 7440-39-3 Formula: BaH2 Molecular Weight: 139.34300

    Description

    Barium is a chemical element with symbolBa and atomic number56. It is the fifth element in Group 2, a soft silvery metallic alkaline earth metal. Because of its high chemical reactivity barium is never found in nature as a free element. Its hydroxide was known in pre-modern history as baryta; this substance does not occur as a mineral, but can be prepared by heating barium carbonate.
    The most common naturally occurring minerals of barium are barite (barium sulfate, BaSO4) and witherite (barium carbonate, BaCO3), both being insoluble in water. Barium's name originates from the alchemical derivative "baryta", which itself comes from Greek βαρύς (barys), meaning "heavy." Baric is the adjective form of barium. Barium was identified as a new element in 1774, but not reduced to a metal until 1808 with the advent of electrolysis.
    Barium has only a few industrial applications. The metal has been historically used as a getter for vacuum tubes. It is a component of YBCO (high-temperature superconductors) and electroceramics, and is added to steel and cast iron to reduce the size of carbon grains within the microstructure of the metal. Barium compounds are added to fireworks to impart a green color. Barium sulfate is used as an insoluble heavy additive to oil well drilling fluid, as well as in a purer form, as X-ray radiocontrast agents for imaging the human gastrointestinal tract. Soluble barium compounds are poisonous due to release of the soluble barium ion, and therefore have been used as rodenticides.

    Basic Info

    Chemical Name barium(0)
    Synonyms

    Barium;
    barium powder;
    baryum;
    barium strontium-containing oxide;
    bario;
    UNII-24GP945V5T;

    CAS No. 7440-39-3
    Molecular Formula BaH2
    Molecular Weight 139.34300
    PSA 0.00000
    LogP 0.22500

    Properties

    Appearance & Physical State rod
    Density 3.76
    Boiling Point 1640ºC
    Melting Point 725ºC
    Stability Stability Reacts vigorously or violently with acids, water, tetrachloromethane, small halogenated hydrocarbons. Should be stored under an inert material such as petroleum ether to exclude air. Flammable.
    Storage Condition water-free area

    Safety Info

    RTECS CQ8370000
    Hazard Class 8
    Safety Statements S23; S26; S36; S36/37/39; S45; S43; S36/37; S16
    WGK Germany 3
    Packing Group III
    RIDADR UN 3264 8
    Risk Statements R25
    Hazard Codes C; Xi; F
    Signal Word Danger
    Symbol GHS02
    Hazard Declaration H261
    Caution Statement P231 + P232; P335 + P334; P370 + P378; P402 + P404

    Synthesis Route

    Barium peroxidebarium(0)
    barium,fluoromethanebarium(0)
    titanium atombarium(0)

    Toxicity

    Exposure Route Type of Test Species Observed Dose/Duration Toxic Effects
    Oral TDLo - Lowest published toxic dose Rodent - rat 26622 mg/kg/69W-C 1.Vascular-BP elevation not characterized in autonomic section
    2.Biochemical-Enzyme inhibition, induction, or change in blood or tissue levels-cytochrome oxidases (including oxidative phosphorylation)
    3.Biochemical-Metabolism (Intermediary)-xanthine, purine or nucleotides including urate

    Precursor

    titanium atom
    barium,fluoromethane
    Barium peroxide
    aluminium atom

    Downstream Product

    barium monohydroxide
    barium hydride hydroxide
    barium dihydroxide
    fentin chloride

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