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Sample

Name
  Glassy silicate (1-x)MgO-xSiO2, x=0.35, HDPE and KBr pellets
UID
  SAMPLE_X35_KD_20161104_001

Owner of sample

Database
  - STOPCODA
Experimentalists
  - Karine Demyk

Origin of sample

Date
  2015-04-01
Provider
  Karine Demyk, IRAP

Physical characteristics

Thickness
  2.0 ± 0.4 mm
Comments
  Generic sample consisting of KBr and PE pellets of the sample (13 mm in diameter) used to derived the mass absorption coefficient (MAC, cm2/g) in the spectral domain 5 - 1000 µm.

Sample environment: Temperature

Temperature
  293.0 ± 1.0 K
Temperature max
  293.0 ± 1.0 K

Sample environment: Fluid

Type
  purged air
Fluid temperature
  293.0 ± 1.0 K
Fluid pressure
  1000.0 ± 1.0 mbar

Layers in sample

Number
  1
Layers
  - Glassy silicate (1-x)MgO-xSiO2, x=0.35, HDPE and KBr pellets , 2.0 mm
  LAYER_1_X35_KD_20161104_001
  Layer
  Name
    Glassy silicate (1-x)MgO-xSiO2, x=0.35, HDPE and KBr pellets
  UID
    LAYER_1_X35_KD_20161104_001
  Physical characteristics
  Type of layer
    pellet
  Thickness
    2.0 ± 0.4 mm
  Texture
    compact
  Type of porosity
    without pores
  Porosity
    0.0e+00
  Comments
    PE and KBr pellets of the samples. For the MIR domain (2–40 μm), ∼0.5–1.0 mg of sample were mixed with 300 mg of KBr. For the FIR domain (40 - 1000 µm), because the MAC of the samples decreases at long wavelengths, several pellets with an increasing mass of samples were used. Typically, pellets containing 5, 20, 40, 80 and 170 mg of samples and 300 mg of PE were retained. The pellets have different thickness depending on the amount of material and PE or KBr.
  Formation conditions
  Formation mode
    pressing granular material
  Comments
    To make the pellets, the mixture of the sample and the HDPE was heated to 130°C and then pressed under 10 tons for 5 min to form a 13 mm pellet. The KBr pellets are pressed under 10 tons for 5 min at room temperature.
  Materials in layer
  Number
    3
  Arrangement
    homogeneous mixing
  Materials

    | Name | Arrangement | Mass (g) | Mass fraction | Abundance comments
    | Glassy silicate (1-x)MgO-xSiO2 x=0.35, powder |  |  |  |
    | Polyethylene (PE) powder |  |  |  |
    | Potassium bromide (KBr) powder |  |  |  |

    MATMIN_glassy_x35_KD_20161104
    Matter
    Name
      Glassy silicate (1-x)MgO-xSiO2 x=0.35, powder
    UID
      MATMIN_glassy_x35_KD_20161104
    Family
    Family
      solid
    Owner of matter
    Database
      - STOPCODA
    Matter origin
    Origins
      laboratory
    Matter preparation and component types
    Preparation
      raw
    Method
      Glass synthesized by CO2 laser heating and melting (< 5s) of a sintered mixture of oxides having the desired stoichiometry. The oxide mixture is levitated in a controlled Ar gas flow jet (Kalampounias et al; 2009). The resulting glass spheres (~1mm) were ground by hand in an agate mortar until (sub)micronic sizes are reached.
    Phase type
      solid
    Component type (group)
      mineral (silicate mineral)
    Matter shape and texture
    Texture
      pulverulent
    Type of porosity
      particulate
    Materials in matter
    Number
      1
    Mode of mixing
      single material
    Materials

      | Name | Arrangement | Mass (g) | Mass fraction | Abundance comments
      | Glassy silicate (1-x)MgO-xSiO2 x=0.35, powder |  |  | 1.0 |

      MATERIAL_KD_20161104_001
      Material
      Name
        Glassy silicate (1-x)MgO-xSiO2 x=0.35, powder
      UID
        MATERIAL_KD_20161104_001
      Origin
      Origin
        laboratory
      Grains
      Texture
        compact
      Grain sizes

        Grains | Size min | Size max | Size median | Size width | Size mass fraction | Grain shape
        #1 | 0.01 μm | 5.0 μm |  |  | 1.0 | irregular

      Size method
        MEB picture
      Constituents in material
      Number
        1
      Arrangement
        single phase

      | Name | Compound type | Arrangement | Mass (g) | Mass fraction | Adsorbat name
      | Glassy silicate (1-x)MgO-xSiO2 x=0.35 | non-oxide ceramic | single phase |  | 1.0 ± 0.0 |

      CONST_KD_20161104_001
      Constituent
      Name
        Glassy silicate (1-x)MgO-xSiO2 x=0.35
      UID
        CONST_KD_20161104_001
      Type
      Family
        covalent network solid
      Class
        tridimentional covalent network solid
      Compound type
        non-oxide ceramic
      Chemical composition
      Formula
        (1-x)MgO-xSiO2 x=0.35. (MgO)1.86.SiO2
      Chemical formula
        (MgO)2(SiO2)x
      Elemental formula
        (Mg)1.86-2 (Si)1-2 (O)3.86-6
      Isotope mixture type
        terrestrial abundance
      Species

      | Formula | Name | Family | Number min-max | Mole fraction | Isotope mole fraction | State | Relevance
      | Mg | Magnesium [◹] | element | 1.86 - 2 | 0.2308612440191388 ± 0.00837320574162679 | 1.0 | pure | main
      | Si | Silicon [◹] | element | 1 - 2 | 0.17942583732057418 ± 0.059808612440191394 | 1.0 | pure | main
      | O | Oxygen [◹] | element | 3.86 - 6 | 0.5897129186602871 ± 0.1279904306220096 | 1.0 | pure | main

      Classification
      Class
        molecular solids with apolar molecules (01)
      Type
        with monoatomic apolar molecules (A) (01.01)
      Phase
      Phase type
        glassy
      Crystallography
      Crystal system
        amorphous
      Crystal class
        N/A
      Crystal class symbol
        N/A
      Crystal spacegroup
        N/A
      Physical properties
      Molar mass
        140.69 - 200.78 g/mol
      Optical properties
      Refringence type
        biaxial
      Refringence sign
        positive or negative
      Birefringence
        0.009 - 0.033
      Refraction index nα
        1.636 - 1.668
      Refraction index nβ
        1.650 - 1.673
      Refraction index nγ
        1.659 - 1.679
    MATSOL_HDPE_KD_20161104
    Matter
    Name
      High density polyethylene (HDPE) powder for FIR spectroscopy
    UID
      MATSOL_HDPE_KD_20161104
    Family
    Family
      solid
    Owner of matter
    Database
      - STOPCODA
    Matter origin
    Origins
      commercial
    Provider
      Thermo Fisher
    Provider reference code
      0016-018
    Matter preparation and component types
    Preparation
      raw
    Method
      synthesis
    Phase type
      solid
    Matter shape and texture
    Texture
      pulverulent
    Type of porosity
      particulate
    Porosity
      0.0e+00
    Grains
    Grain compacity
      1.0
    Materials in matter
    Number
      1
    Mode of mixing
      single material
    Materials

      | Name | Arrangement | Mass (g) | Mass fraction | Abundance comments
      | Polyethylene (PE) powder |  |  | 1.0 |

      MATERIAL_KD_20161104_002
      Material
      Name
        Polyethylene (PE) powder
      UID
        MATERIAL_KD_20161104_002
      Origin
      Origin
        commercial
      Grains
      Grain sizes

        Grains | Size min | Size max | Size median | Size width | Size mass fraction | Grain shape
        #1 |  |  |  |  |  | irregular

      Constituents in material
      Number
        1
      Arrangement
        single phase

      | Name | Compound type | Arrangement | Mass (g) | Mass fraction | Adsorbat name
      | Polyethylene HDPE | homopolymer | single phase |  | 1.0 ± 0.0 |

      CONST_KD_20161104_002
      Constituent
      Name
        Polyethylene HDPE
      UID
        CONST_KD_20161104_002
      Type
      Family
        molecular solid
      Class
        non polar molecular solid
      Compound type
        homopolymer
      Comments
        The polymer has up to 7 500 000 monomers units and different branching degrees. It is classified according to its density and branching: very-low-density polyethylene (VLDPE), low-density polyethylene (LDPE), Linear low-density polyethylene (LLDPE), medium-density polyethylene (MDPE), Cross-linked polyethylene (PEX or XLPE), High-density cross-linked polyethylene (HDXLPE), high-density polyethylene (HDPE), Ultra-low-molecular-weight polyethylene (ULMWPE or PE-WAX), High-molecular-weight polyethylene (HMWPE), and ultra-high-molecular-weight polyethylene (UHMWPE)
      Polymer
      Terminal function
        CH3
      Monomer number
        n, up to 7500000
      Molar mass
        28.053 per mer unit g/mol
      Polymolecularity index
        1
      Chemical composition
      Formula
        CH3-(CH2-CH2)n-CH3
      Chemical formula
        (C2H4)n(CH3)2
      Elemental formula
        C2 H4
      Isotope mixture type
        terrestrial abundance
      Species

      | Formula | Name | Family | Number min-max | Mole fraction | Isotope mole fraction | State | Relevance
      | •[C2H4]• | Ethylene mer [◹] | molecule | 1 - n |  | 1 | constituent mer | main
      | C | Carbon [◹] | element | 2 |  | 1 | constituent element | main
      | H | Hydrogen [◹] | element | 6 |  | 1 | constituent element | main

      Composition comments
        The formula is n repeting units + 2 -CH3 terminal functions
      Chemical functions and bonds
      Chemical functions

        | Function | Number | Relevance
        | R-CH2-R | 2 | main

      Chemical bonds

        | Bond | Number | Relevance
        | ≥ C-C ≤ | n |
        | ≥ C-H | 6 |
        | ≥ C-C ≤ | 1 | main
        | ≥ C-H | 4 | main

      Classification
      Class
        molecular solids with apolar molecules (01)
      Type
        with polyatomic organic apolar molecules (CnHm...) (01.06)
      Phase
      Phase name
        HDPE
      Phase type
        various
      Crystallography
      Polytype
        High-density polyethylene (HDPE) (HDPE has a low degree of branching and is defined by a density of greater or equal to 0.941 g/cm3.)
      Crystal sizes
      Texture
        other
      Physical properties
      Molar mass
        28.053 g/mol
      Density
        0.94 - 0.96 g/cm3
      Optical properties
      Refringence type
        unknown
      Diaphaneity
        transparent to translucent
      Luster
        vitreous
    MATSOL_KBr_KD_20170710
    Matter
    Name
      Potassium Bromide (KBr) powder for MIR spectroscopy
    UID
      MATSOL_KBr_KD_20170710
    Family
    Family
      solid
    Owner of matter
    Database
      - STOPCODA
    Matter origin
    Origins
      commercial
    Provider
      Aldrich
    Matter preparation and component types
    Preparation
      raw
    Method
      synthesis
    Phase type
      solid
    Matter shape and texture
    Texture
      pulverulent
    Type of porosity
      particulate
    Porosity
      0.0e+00
    Grains
    Grain compacity
      1.0
    Materials in matter
    Number
      1
    Mode of mixing
      single material
    Materials

      | Name | Arrangement | Mass (g) | Mass fraction | Abundance comments
      | Potassium bromide (KBr) powder |  |  | 1.0 |

      MATERIAL_KD_20170710_000
      Material
      Name
        Potassium bromide (KBr) powder
      UID
        MATERIAL_KD_20170710_000
      Origin
      Origin
        commercial
      Grains
      Grain sizes

        Grains | Size min | Size max | Size median | Size width | Size mass fraction | Grain shape
        #1 |  |  |  |  |  | irregular

      Constituents in material
      Number
        1
      Arrangement
        single phase

      | Name | Compound type | Arrangement | Mass (g) | Mass fraction | Adsorbat name
      | Potassium bromide KBr | bromide | single phase |  | 1.0 ± 0.0 |

      CONST_KD_20170710_000
      Constituent
      Name
        Potassium bromide KBr
      UID
        CONST_KD_20170710_000
      Type
      Family
        ionic solid
      Class
        normal salt
      Compound type
        bromide
      Comments
        Not recognized as mineral species. Natural Potassium bromide is regarded as very very unlikely
      Chemical composition
      Formula
        K⁺ · Br⁻
      Chemical formula
        KBr
      Elemental formula
        K Br
      Isotope mixture type
        terrestrial abundance
      Species

      | Formula | Name | Family | Number min-max | Mole fraction | Isotope mole fraction | State | Relevance
      | K⁺ | Potassium(1+) cation [◹] | element | 1 | 0.5 | 1 | constituent cation | main
      | Br⁻ | Bromide anion [◹] | element | 1 | 0.5 | 1 | constituent anion | main

      Composition comments
        Deliquescent, very soluble in water: 678 g/l (25 °C)
      Chemical functions and bonds
      Chemical bonds

        | Bond | Number
        | K⁺ · Br⁻ | 1

      Classification
      Class
        normal salts (07)
      Type
        simple normal salts (07.01)
      Phase
      Phase type
        crystalline
      Crystallography
      Crystal system
        isometric (cubic)
      Crystal class
        hexoctahedral
      Crystal class symbol
        m-3m (Oh)
      Crystal spacegroup
        Fm-3m
      Crystal sizes
      Texture
        other
      Physical properties
      Molar mass
        119.002 g/mol
      Density
        2.74 g/cm3
      Optical properties
      Refringence type
        isotropic
      Refraction index nα
        1.560
      Color
        colorless, white
      Diaphaneity
        transparent to translucent
      Luster
        vitreous