Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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:
-
EC Number:
412-640-1
EC Name:
-
CAS Number:
84632-50-8
Molecular formula:
C20 H10 N4 O2
IUPAC Name:
3-[4-(3-cyanophenyl)-3,6-dioxo-2H,3H,5H,6H-pyrrolo[3,4-c]pyrrol-1-yl]benzonitrile

Type of Substance

Composition:
mono-constituent substance
Origin:
organic

Substance Identifiers

Compositions

Boundary Composition(s) open all close all

State Form:
solid: nanoform


Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
412-640-1
EC Name:
-
CAS Number:
84632-50-8
Molecular formula:
C20 H10 N4 O2
IUPAC Name:
3-[4-(3-cyanophenyl)-3,6-dioxo-2H,3H,5H,6H-pyrrolo[3,4-c]pyrrol-1-yl]benzonitrile

Characterisation of nanoforms

Type of information reported:
single nanoform
Name of nanoform:
Boundary composition Pigment orange 71_nanoform

Shape

Shape description
Shape category:
elongated
Shape:
rod
Pure shape:
yes
Typical composition:
>= 80 %
Range:
> 80 - <= 100 %

Particle size distribution and range

Particle size distribution and range
Shape category:
elongated
Percentileopen allclose all
Percentile:
D50
Typical value:
ca. 55 nm
Range:
> 10 - <= 200 nm
Percentile:
D10
Typical value:
ca. 40 nm
Range:
> 10 - <= 200 nm
Percentile:
D90
Typical value:
ca. 90 nm
Range:
> 10 - <= 200 nm
Typical length:
ca. 180 nm
Range of length:
> 90 - <= 300 nm
Typical aspect ratio (:1):
ca. 3 :1
Range of aspect ratio (:1):
>= 1.5 - <= 7
Fraction of constituent particles in the size range 1-100 nm:
> 80 - <= 100 %

Crystallinity

Structures
Structure:
crystalline
Name:
boundary composition Pigmetn orange 71_nanoform
Pure structure:
yes
Typical composition:
> 80 %
Range:
>= 80 - <= 100 %
Description:
Determination of crystal lattice is unclear based on TEM and would need Rietveld refinement based on powder X-ray difffractogramm,
https://en.wikipedia.org/wiki/Rietveld_refinement
which is not available.

Specific surface area

Typical specific surface area:
ca. 80 m²/g
Range of specific surface area:
> 50 - <= 150 m²/g

Surface functionalisation / treatment

Surface treatment applied:
no

Legal Entity Composition(s) open all close all

State Form:
solid: nanoform


Constituent 1
Chemical structure
Reference substance name:
-
EC Number:
412-640-1
EC Name:
-
CAS Number:
84632-50-8
Molecular formula:
C20 H10 N4 O2
IUPAC Name:
3-[4-(3-cyanophenyl)-3,6-dioxo-2H,3H,5H,6H-pyrrolo[3,4-c]pyrrol-1-yl]benzonitrile

Characterisation of nanoforms

Type of information reported:
single nanoform
Name of nanoform:
LE Pigment Orange 71_nanoform

Shape

Shape description
Shape category:
elongated
Shape:
rod
Pure shape:
yes
Typical composition:
>= 95 %
Range:
> 80 - <= 99 %

Particle size distribution and range

Particle size distribution and range
Shape category:
elongated
Percentileopen allclose all
Percentile:
D50
Typical value:
ca. 55 nm
Range:
>= 20 - <= 200 nm
Percentile:
D90
Typical value:
ca. 91 nm
Range:
>= 50 - <= 200 nm
Percentile:
D10
Typical value:
ca. 37 nm
Range:
>= 20 - <= 200 nm
Typical length:
ca. 185 nm
Range of length:
>= 50 - <= 300 nm
Typical aspect ratio (:1):
ca. 3 :1
Range of aspect ratio (:1):
>= 2 - <= 7
Fraction of constituent particles in the size range 1-100 nm:
> 80 - <= 100 %

Crystallinity

Structures
Structure:
crystalline
Name:
LE Pigment orange 71_nanoform
Pure structure:
yes
Description:
Determination of crystal lattice is unclear based on TEM and would need Rietveld refinement based on powder X-ray difffractogramm, which is not available.
https://en.wikipedia.org/wiki/Rietveld_refinement

Assessed as crystalline based on TEM pictures form attached dossier ID 31.
It is well known in the field of Pigments, that powder X-Ray diffraction mesurements of very fine crystals cannot be used to properly define the crystal system and/or Bravais lattice due to signal broadening.
(e.g. Herbst, Hunger, Industrial Organic Pigments VCH, 1993, p.44)

Specific surface area

Typical specific surface area:
ca. 86 m²/g
Range of specific surface area:
> 50 - < 150 m²/g

Surface functionalisation / treatment

Surface treatment applied:
no

Composition(s) generated upon use

Other types of composition(s)