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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
Diiron trioxide
EC Number:
215-168-2
EC Name:
Diiron trioxide
CAS Number:
1309-37-1
Molecular formula:
Fe2O3
IUPAC Name:
diiron(3+) trioxidandiide

Type of Substance

Composition:
mono-constituent substance
Origin:
inorganic

Substance Identifiers open all close all

  • Diiron Trioxide
  • 215-168-2
  • 215-168-2
  • 1309-37-1
  • 1332-37-2
  • Pigment Red 101
  • Hematite
  • Iron Oxide
  • E172
  • C.I: 77491
  • C.I. Pigment Red 101, C.I. 77491, Diiron trioxide, Iron(III)oxide, Ferric oxide Red, iron oxide, Iron oxide red, Copperas red
  • AMOMAX-*
  • ActiSorb*
  • Aquafer
  • AutomotiveTM Flash Russet A-660S
  • Bayferrox
  • Bayferrox 130
  • Blondiee® Super Bronze 6200S
  • Blood stone
  • C.I. 77491
  • C.I. Pigment Red 101
  • C.I. Pigment Red 101 C.I. 77491 Bayferrox 130 Diiron trioxide Iron(III)oxide Ferric oxide Red iron oxide Iron oxide red Copperas red
  • C.I. pigment red 101
  • C12-1*
  • CathayCoat Red Iron Oxide
  • CathayCoat Red Iron oxide
  • CathayMag Red Iron oxide
  • CathayPure Red Iron Oxide
  • CathayPure Red Iron oxide
  • Colortherm
  • Copperas red
  • DIIRON TRIOXIDE
  • DMax *
  • Diiron trioxide
  • Dzelzs Trioksīds
  • Eisenoxid AB2
  • Eisenoxid HPG<110
  • Eisenoxid HPG<110D
  • Eisenoxid HPG<60
  • Eisenoxid HPG<60D
  • Eisenoxid HPG<80
  • Eisenoxid HPG<80 VERDICHTET
  • Eisenoxid HPG<80D
  • Eisenoxid MHPG<150
  • Eisenoxid MHPG<150 VERDICHTET
  • Eisenoxid MHPG<150D
  • Eisenoxid MPG<250
  • Eisenoxid MPG<250 VERDICHTET
  • Eisenoxid MPG<250D
  • Eisenoxid UPLG B2
  • Eisenoxid UPLG<350
  • Eisenoxid UPLG<350D
  • Eisenoxid sprühgeröstet B2
  • Eisenoxid zur Herstellung von Zementklinker
  • FERRIC OXIDE (PURITY MORE THAN 99%)
  • FERRIC OXIDE GRADE HPG<80 PPM PURITY 99
  • FERRIC OXIDE GRADE HPG<80D OF PURITY 99%
  • FERRIC OXIDE HPG<60
  • FERRIC OXIDE MPG<250 OF PURITY MIN. 99%
  • Ferric oxide
  • FerroTint Red Iron Oxide
  • FerroTint Red Iron oxide
  • Ferroxon Red
  • G-3 *
  • Haematite
  • Hematite
  • IRON OXIDE-DENSE-VOESTALPINE
  • IRON OXIDE-UNDENSE-VOESTALPINE
  • Iron (III) oxide
  • Iron Oxide
  • Iron Oxide HPG - A(1)
  • Iron Oxide HPG<110
  • Iron Oxide HPG<110D
  • Iron Oxide HPG<60
  • Iron Oxide HPG<60D
  • Iron Oxide HPG<80
  • Iron Oxide HPG<80D
  • Iron Oxide JXC
  • Iron Oxide MHPG<150
  • Iron Oxide MHPG<150D
  • Iron Oxide MPG<250
  • Iron Oxide MPG<250D
  • Iron Oxide Red
  • Iron Oxide UPLG<350
  • Iron Oxide UPLG<350D
  • Iron Oxide, MHPG-DX (densified)
  • Iron Oxide, MHPG-X
  • Iron oxide
  • Iron oxide (Fe2O3)
  • Iron oxide red
  • Iron trioxide
  • Iron(III)oxide
  • Iron, specular
  • Järnoxid
  • Lavanya Laal / Red lron Oxide
  • Lurgi iron oxides
  • Merox Ferric Oxide
  • N-150
  • OSSIDO DI FERRO
  • OX 9030
  • Pigment Red
  • Piirox® A110
  • Piirox® A130
  • Piirox® K130M
  • Red Iron Oxide 190
  • Red Iron Oxide 190WH
  • Red iron oxide
  • Red iron oxide 130 ; Red iron oxide 130A; Red iron oxide 190
  • Red iron oxide pigment Crimea FerroX
  • ReflexTM Splendor Russet R-660K
  • Ruthner iron oxides
  • SR-570
  • STYROMAX® *
  • See section 3.4 for trade name on the mixtures containing the substance
  • ShiftMax 120
  • ShiftMax*
  • Spectrum Red Iron Oxide
  • Spectrum Red Iron oxide
  • Synthetic iron oxides
  • TAROX IRON OXIDE R-110-7
  • TAROX IRON OXIDE R-110P
  • TAROX IRON OXIDE R-516-L
  • TAROX IRON OXIDE R-516P
  • TAROX IRON OXIDE R-800HP
  • TAROX IRON OXIDE RB-50
  • The substance only placed on the market as a part of the chemical matrix of an inorganic catalyst (i.e. regarded as a preparation according to Guidance on substance identification). Therefore trade name for the substance does not exist.
  • WAS Eisenoxid
  • diiron trioxide
  • drinkwaterslib
  • ijzerslib
  • iron oxide red
  • ossido di ferro rosso
  • ossido di ferro rosso sintetico
  • oxid železa
  • oxid železitý
  • oxyde de fer rouge
  • red iron oxide
  • synthetic red iron oxide
  • 12134-66-6
    (Synonym CAS)
    601-772-7
    (Synonym EC)
    C.I. 77491
    (C.I.)
    C.I. Pigment Red 101
    (No other type specified), (C.I.)
    Iron (III) oxide, gamma-Fe2O3
    (IUPAC name)
    Iron(III)oxide
    (No other type specified)
    ferric oxide, hematite, ferric iron, red iron oxide, rouge, maghemite, colcothar, iron sesquioxide, rust, ochre
    (No other type specified)

    Compositions

    Boundary Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    set of nanoforms
    Name of set of nanoforms:
    Nano - alpha Fe2O3

    Shape

    Shape descriptionopen allclose all
    Shape category:
    elongated
    Shape:
    other: polymorph (spheres/cubes/globular/rods)
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %
    Shape category:
    spheroidal
    Shape:
    other: polymorph (spheres/cubes/globular/rods)
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 40 nm
    Percentile:
    D50
    Range:
    >= 10 - <= 60 nm
    Percentile:
    D90
    Range:
    >= 15 - <= 80 nm
    Range of length:
    >= 14 - <= 240 nm
    Range of aspect ratio (:1):
    >= 3 - <= 6
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    > 5 - < 90 nm
    Percentile:
    D50
    Range:
    > 15 - < 100 nm
    Percentile:
    D90
    Range:
    > 20 - < 300 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-Fe2O3 (Hematite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    > 4 - < 130 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    Does the set contain both treated and non-surface treated nanoforms?:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Cerac_diiron trioxide_nano_gamma Fe2O3

    Shape

    Shape descriptionopen allclose all
    Shape category:
    platelet
    Shape:
    other: hexagonal
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %
    Shape category:
    spheroidal
    Shape:
    other: equant shape
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    platelet
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    > 1 - <= 5 nm
    Percentile:
    D50
    Range:
    > 1 - <= 15 nm
    Percentile:
    D90
    Range:
    > 1 - < 35 nm
    Range of length:
    >= 21 - <= 100 nm
    Range of lateral dimension 1:
    > 21 - < 100 nm
    Range of lateral dimension 2:
    > 1 - < 5 nm
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Additional information:
    Particles can not be separated for detailed characterisation of each shape
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    > 1 - <= 5 nm
    Percentile:
    D50
    Range:
    > 1 - <= 15 nm
    Percentile:
    D90
    Range:
    > 1 - <= 35 nm
    Range of length:
    >= 10 - <= 20 nm
    Range of lateral dimension 1:
    >= 10 - <= 20 nm
    Range of lateral dimension 2:
    >= 10 - <= 20 nm
    Range of aspect ratio (:1):
    >= 0.9 - <= 1.1
    Additional information:
    Particles can not be separated for detailed characterisation of each shape
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structuresopen allclose all
    Structure:
    crystalline
    Name:
    Hematite, alpha-Fe2O3
    Pure structure:
    no
    Range:
    >= 0 - < 3.8 %
    Structure:
    crystalline
    Name:
    Maghemite, gamma-Fe2O3
    Pure structure:
    no
    Range:
    > 96.2 - <= 100 %

    Specific surface area

    Range of specific surface area:
    ca. 30 - ca. 60 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Diiron trioxide -Nano - alpha Fe2O3 _ AR<5

    Shape

    Shape descriptionopen allclose all
    Shape category:
    elongated
    Shape:
    other: polymorph (spheres/cubes/globular/rods)
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %
    Shape category:
    spheroidal
    Shape:
    other: polymorph (spheres/cubes/globular/rods)
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 50 nm
    Percentile:
    D50
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Range:
    >= 15 - <= 110 nm
    Range of length:
    >= 10 - <= 150 nm
    Range of aspect ratio (:1):
    >= 1 - <= 5
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    > 5 - < 90 nm
    Percentile:
    D50
    Range:
    > 10 - < 100 nm
    Percentile:
    D90
    Range:
    > 20 - < 200 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-Fe2O3 (Hematite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    > 5 - < 300 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Legal Entity Composition(s) open all close all

    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Diiron trioxide - LE_Nano_alpha-Fe2O3_AR<5

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    other: polymorph (spheres/cubes/globular)
    Pure shape:
    no
    Typical composition:
    ca. 99 %
    Range:
    > 95 - <= 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Remarks:
    The shapes in the shape category "spheroidal" are considered as polymorph shapes (spheres/cubes/globular).
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 45 nm
    Range:
    >= 41 - <= 60 nm
    Percentile:
    D50
    Typical value:
    ca. 94 nm
    Range:
    >= 82 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 200 nm
    Range:
    >= 160 - <= 250 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 58 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-Fe2O3 (Hematite)
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 15 m²/g
    Range of specific surface area:
    >= 10 - <= 20 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Cerac_diiron trioxide_nano_gamma Fe2O3

    Shape

    Shape descriptionopen allclose all
    Shape category:
    platelet
    Shape:
    other: hexagonal
    Pure shape:
    no
    Typical composition:
    ca. 35 %
    Range:
    >= 30 - <= 60 %
    Shape category:
    spheroidal
    Shape:
    other: equant shape
    Pure shape:
    no
    Typical composition:
    ca. 65 %
    Range:
    >= 40 - <= 70 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    platelet
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    5 nm
    Range:
    > 1 - <= 5 nm
    Percentile:
    D50
    Typical value:
    15 nm
    Range:
    > 1 - <= 15 nm
    Percentile:
    D90
    Typical value:
    34 nm
    Range:
    > 1 - < 35 nm
    Range of length:
    >= 21 - <= 100 nm
    Range of lateral dimension 1:
    > 21 - < 100 nm
    Range of lateral dimension 2:
    > 1 - < 5 nm
    Typical aspect ratio (:1):
    4 :1
    Range of aspect ratio (:1):
    >= 4 - <= 10
    Additional information:
    Particles can not be separated for detailed characterisation of each shape
    Fraction of constituent particles in the size range 1-100 nm:
    ca. 100 - <= 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 5 nm
    Range:
    > 1 - <= 5 nm
    Percentile:
    D50
    Typical value:
    ca. 15 nm
    Range:
    > 1 - <= 15 nm
    Percentile:
    D90
    Typical value:
    ca. 34 nm
    Range:
    > 1 - <= 35 nm
    Typical length:
    10 nm
    Range of length:
    >= 10 - <= 20 nm
    Typical lateral dimension 1:
    10 nm
    Range of lateral dimension 1:
    >= 10 - <= 20 nm
    Typical lateral dimension 2:
    10 nm
    Range of lateral dimension 2:
    >= 10 - <= 20 nm
    Typical aspect ratio (:1):
    1 :1
    Range of aspect ratio (:1):
    >= 0.9 - <= 1.1
    Additional information:
    Particles can not be separated for detailed characterisation of each shape
    Fraction of constituent particles in the size range 1-100 nm:
    ca. 100 - <= 100 %

    Crystallinity

    Structuresopen allclose all
    Structure:
    crystalline
    Name:
    Hematite, alpha-Fe2O3
    Pure structure:
    no
    Typical composition:
    ca. 1.9 %
    Range:
    >= 0 - < 3.8 %
    Structure:
    crystalline
    Name:
    Maghemite, gamma-Fe2O3
    Pure structure:
    no
    Typical composition:
    98.1 %
    Range:
    > 96.2 - <= 100 %

    Specific surface area

    Typical specific surface area:
    ca. 33.1 m²/g
    Range of specific surface area:
    ca. 30 - ca. 60 m²/g
    Typical volume specific surface area:
    6.95 m²/cm³

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Hematite (Fe2O3)
    EC Number:
    215-275-4
    EC Name:
    Hematite (Fe2O3)
    CAS Number:
    1317-60-8
    Molecular formula:
    Fe2O3
    IUPAC Name:
    iron(3+);oxygen(2-)
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: bulk


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    This nanoform is covered by a registration:
    no
    Name of nanoform:
    Nano_alpha-Fe2O3

    Shape

    Shape description
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    yes

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 43 nm
    Range:
    >= 31 - <= 55 nm
    Percentile:
    D50
    Typical value:
    ca. 102 nm
    Range:
    >= 73 - <= 131 nm
    Percentile:
    D90
    Typical value:
    ca. 232 nm
    Range:
    >= 173 - <= 291 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 34.7 - <= 59.2 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Hematite α-Fe2O3
    Pure structure:
    yes
    Crystal system:
    trigonal

    Specific surface area

    Typical specific surface area:
    ca. 4 m²/g
    Range of specific surface area:
    >= 3 - <= 6 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    This nanoform is covered by a registration:
    yes
    Name of nanoform:
    Pigment Red 101_Nanoform_Spheroidal

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Shape:
    cubic
    Pure shape:
    no
    Typical composition:
    ca. 99 %
    Range:
    ca. 60 - < 100 %
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    no
    Typical composition:
    ca. 1 %
    Range:
    ca. 0 - <= 40 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 50 nm
    Range:
    >= 10 - <= 80 nm
    Percentile:
    D50
    Typical value:
    ca. 71 nm
    Range:
    >= 20 - <= 100 nm
    Percentile:
    D90
    Typical value:
    ca. 94 nm
    Range:
    >= 50 - <= 120 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 80 - <= 100 %
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 44 nm
    Range:
    >= 1 - <= 70 nm
    Percentile:
    D50
    Typical value:
    ca. 44 nm
    Range:
    >= 1 - <= 70 nm
    Percentile:
    D90
    Typical value:
    ca. 44 nm
    Range:
    >= 1 - <= 70 nm
    Typical length:
    ca. 152 nm
    Range of length:
    >= 70 - <= 200 nm
    Typical aspect ratio (:1):
    ca. 3.4 :1
    Range of aspect ratio (:1):
    >= 3 - <= 4
    Fraction of constituent particles in the size range 1-100 nm:
    >= 70 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Pigment Red 101
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 10.5 m²/g
    Range of specific surface area:
    > 1 - <= 120 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Pigment Red 101_Nanoform_Elongated

    Shape

    Shape description
    Shape category:
    elongated
    Shape:
    rod
    Pure shape:
    yes
    Typical composition:
    ca. 100 %

    Particle size distribution and range

    Particle size distribution and range
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Typical value:
    ca. 9.5 nm
    Range:
    >= 1 - <= 40 nm
    Percentile:
    D50
    Typical value:
    ca. 15.1 nm
    Range:
    >= 5 - <= 60 nm
    Percentile:
    D90
    Typical value:
    ca. 20.9 nm
    Range:
    >= 10 - <= 80 nm
    Typical length:
    ca. 64.4 nm
    Range of length:
    >= 5 - <= 160 nm
    Typical aspect ratio (:1):
    ca. 4.2 :1
    Range of aspect ratio (:1):
    >= 3 - <= 5
    Fraction of constituent particles in the size range 1-100 nm:
    >= 95 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    Pigment Red 101
    Pure structure:
    yes

    Specific surface area

    Typical specific surface area:
    ca. 94.8 m²/g
    Range of specific surface area:
    >= 30 - <= 120 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: nanoform


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide

    Characterisation of nanoforms

    Type of information reported:
    single nanoform
    Name of nanoform:
    Alpha-Fe2O3

    Shape

    Shape descriptionopen allclose all
    Shape category:
    spheroidal
    Shape:
    spherical
    Pure shape:
    yes
    Range:
    >= 0 - <= 100 %
    Shape category:
    elongated
    Shape:
    other: polymorph
    Pure shape:
    no
    Range:
    >= 0 - <= 100 %

    Particle size distribution and range

    Particle size distribution and rangeopen allclose all
    Shape category:
    elongated
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    >= 5 - <= 50 nm
    Percentile:
    D50
    Range:
    >= 10 - <= 100 nm
    Percentile:
    D90
    Range:
    >= 15 - <= 110 nm
    Range of length:
    >= 10 - <= 150 nm
    Range of aspect ratio (:1):
    >= 1 - <= 5
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %
    Shape category:
    spheroidal
    Percentileopen allclose all
    Percentile:
    D10
    Range:
    > 5 - < 90 nm
    Percentile:
    D50
    Range:
    > 10 - < 100 nm
    Percentile:
    D90
    Range:
    > 20 - < 200 nm
    Fraction of constituent particles in the size range 1-100 nm:
    >= 50 - <= 100 %

    Crystallinity

    Structures
    Structure:
    crystalline
    Name:
    alpha-Fe2O3 (Hematite)
    Pure structure:
    yes

    Specific surface area

    Range of specific surface area:
    > 5 - < 380 m²/g

    Surface functionalisation / treatment

    Surface treatment applied:
    no
    State Form:
    solid: particulate/powder


    Constituent 1
    Chemical structure
    Reference substance name:
    Diiron trioxide
    EC Number:
    215-168-2
    EC Name:
    Diiron trioxide
    CAS Number:
    1309-37-1
    Molecular formula:
    Fe2O3
    IUPAC Name:
    diiron(3+) trioxidandiide