5,12-dihydroquino[2,3-b]acridine-7,14-dione

PBT assessment

PBT assessment: overall result

Reference

Reference 1

Name:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

Type of composition:

boundary composition of the substance

State / form:

solid: nanoform

Reference substance:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

Type of information reported:

single nanoform

Name of nanoform:

C.I. Pigment Violet 19 - joint submission

Shape category:

spheroidal

Shape:

cubic

Pure shape:

no

Range:

> 40 - < 100 %

Shape category:

spheroidal

Shape:

spherical

Pure shape:

no

Range:

> 0 - < 60 %

Shape category:

platelet

Shape:

plate

Pure shape:

yes

Range:

>= 0 - <= 100 %

Shape category:

spheroidal

Percentile:

D10

Range:

>= 0.01 - <= 0.04 μm

Percentile:

D50

Range:

>= 0.015 - <= 0.06 μm

Percentile:

D90

Range:

>= 0.02 - <= 0.08 μm

Fraction of constituent particles in the size range 1-100 nm:

>= 90 - <= 100 %

Shape category:

platelet

Percentile:

D10

Range:

>= 0.01 - <= 0.04 μm

Percentile:

D50

Range:

>= 0.03 - <= 0.1 μm

Percentile:

D90

Range:

>= 0.07 - <= 0.1 μm

Range of lateral dimension 1:

>= 0.01 - <= 0.1 μm

Range of lateral dimension 2:

>= 0.01 - <= 0.2 μm

Range of aspect ratio (:1):

>= 1 - <= 3

Fraction of constituent particles in the size range 1-100 nm:

>= 90 - <= 100 %

Structure:

crystalline

Name:

C.I. Pigment Violet 19

Pure structure:

yes

Range of specific surface area:

>= 5 - <= 150 m²/g

Surface treatment applied:

no

Reference 2

Name:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

Type of composition:

legal entity composition of the substance

State / form:

solid: nanoform

Related composition:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

Reference substance:

5,12-dihydroquino[2,3-b]acridine-7,14-dione

Type of information reported:

single nanoform

Name of nanoform:

C.I. Pigment Violet 19 - joint submission

Shape category:

spheroidal

Shape:

cubic

Pure shape:

no

Range:

> 40 - < 100 %

Shape category:

spheroidal

Shape:

spherical

Pure shape:

no

Range:

> 0 - < 50 %

Shape category:

spheroidal

Percentile:

D10

Range:

>= 0.01 - <= 0.035 μm

Percentile:

D50

Range:

>= 0.015 - <= 0.05 μm

Percentile:

D90

Range:

>= 0.02 - <= 0.075 μm

Fraction of constituent particles in the size range 1-100 nm:

>= 90 - <= 100 %

Structure:

crystalline

Name:

C.I. Pigment Violet 19

Pure structure:

yes

Range of specific surface area:

>= 70 - <= 130 m²/g

Skeletal density:

1.498 g/cm³

Surface treatment applied:

no

PBT status:

the substance is not PBT / vPvB

Justification:

Based on evaluation of the data described in the end point study record in IUCLID section 2.3 it is concluded here that the members of the Quinacridone Pigment Category

·   are not readily biodegradable and are considered to fulfil the P criterion

·   are not fulfilling the B (or vB) criterion

·   and are not fulfilling the T criterion

 

and therefore are evaluated to be neither PBT nor vPvB substances.

 

Overall conclusion:

Based on the assessment described in the subsections below the submission substances of the Category of Quinacridone Pigments are not considered to be PBT /vPvB.

Likely routes of exposure:

The submission substances are not PBT or vPvB. Therefore no emission characterisation is required.