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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Identification

Chemical structure
Display Name:
Selenium
EC Number:
231-957-4
EC Name:
Selenium
CAS Number:
7782-49-2
Molecular formula:
Se
IUPAC Name:
selenium

Type of Substance

Composition:
mono-constituent substance
Origin:
element

Substance Identifiers open all close all

  • Feuchtselen
  • Selenium crude
  • Compositions

    Boundary Composition(s) open all close all

    State Form:
    other: massive


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    other: massive


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder
    Degree of purity:
    >= 95 - <= 99 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    Impurity 1
    Reference substance name:
    Arsenic
    EC Number:
    231-148-6
    EC Name:
    Arsenic
    CAS Number:
    7440-38-2
    Molecular formula:
    As
    IUPAC Name:
    arsenic
    State Form:
    solid: particulate/powder
    Degree of purity:
    >= 95 - <= 99 % (w/w)


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    Impurity 1
    Reference substance name:
    Arsenic
    EC Number:
    231-148-6
    EC Name:
    Arsenic
    CAS Number:
    7440-38-2
    Molecular formula:
    As
    IUPAC Name:
    arsenic
    Impurity 2
    Chemical structure
    Reference substance name:
    Tellurium
    EC Number:
    236-813-4
    EC Name:
    Tellurium
    CAS Number:
    13494-80-9
    Molecular formula:
    Te
    IUPAC Name:
    tellurium
    Impurity 3
    Chemical structure
    Reference substance name:
    Copper
    EC Number:
    231-159-6
    EC Name:
    Copper
    CAS Number:
    7440-50-8
    Molecular formula:
    Cu
    IUPAC Name:
    Copper
    Impurity 4
    Chemical structure
    Reference substance name:
    Lead
    EC Number:
    231-100-4
    EC Name:
    Lead
    CAS Number:
    7439-92-1
    Molecular formula:
    Pb
    IUPAC Name:
    lead
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium

    Legal Entity Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    other: massive


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    other: massive


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    other: massive


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Selenium
    EC Number:
    231-957-4
    EC Name:
    Selenium
    CAS Number:
    7782-49-2
    Molecular formula:
    Se
    IUPAC Name:
    selenium
    State Form:
    solid: particulate/powder