N-(2,3-dihydro-2-oxo-1H-benzimidazol-5-yl)-3-hydroxy-4-[[2,5-dimethoxy-4-[(methylamino)sulphonyl]phenyl]azo]naphthalene-2-carboxamide

PBT assessment

PBT assessment: overall result

Reference

Name:

C.I. Pigment Violet 32

Type of composition:

legal entity composition of the substance

State / form:

solid: nanoform

Related composition:

C.I. Pigment Violet 32

Reference substance:

C.I. Pigment Violet 32

Type of information reported:

single nanoform

Name of nanoform:

C.I. Pigment Violet 32 - joint submission

Shape category:

spheroidal

Remarks:

multimodal shapes containing about 97% spheroidal particles and about 3% elongated particles

Shape:

cubic

Pure shape:

no

Typical composition:

ca. 88 %

Range:

ca. 67 - ca. 92 %

Shape category:

spheroidal

Remarks:

multimodal shapes containing about 97% spheroidal particles and about 3% elongated particles

Shape:

spherical

Pure shape:

no

Typical composition:

ca. 9 %

Range:

ca. 5 - ca. 30 %

Shape category:

elongated

Remarks:

multimodal shapes containing about 97% spheroidal particles and about 3% elongated particles

Shape:

rod

Pure shape:

no

Typical composition:

ca. 3 %

Range:

> 0 - < 20 %

Shape category:

spheroidal

Remarks:

multimodal shapes containing about 97% spheroidal particles and about 3% elongated particles

Percentile:

D10

Typical value:

ca. 0.029 μm

Range:

ca. 0.015 - ca. 0.045 μm

Percentile:

D50

Typical value:

ca. 0.044 μm

Range:

ca. 0.03 - ca. 0.06 μm

Percentile:

D90

Typical value:

ca. 0.067 μm

Range:

ca. 0.05 - ca. 0.08 μm

Additional information:

The determined particle size distribution relates to both shape categories. Due to the very low number of elongated particles, no separate evaluation for rods had been conducted. The smallest dimension of all particles had been considered.

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

>= 80 - ca. 100 %

Shape category:

elongated

Remarks:

multimodal shapes containing about 97% spheroidal particles and about 3% elongated particles

Percentile:

D10

Typical value:

ca. 0.029 μm

Range:

ca. 0.015 - ca. 0.045 μm

Percentile:

D50

Typical value:

ca. 0.044 μm

Range:

ca. 0.03 - ca. 0.06 μm

Percentile:

D90

Typical value:

ca. 0.067 μm

Range:

ca. 0.05 - ca. 0.08 μm

Typical length:

ca. 0.164 μm

Range of length:

ca. 0.075 - ca. 0.255 μm

Typical aspect ratio (:1):

ca. 3.5 :1

Range of aspect ratio (:1):

>= 3 - <= 4.3

Additional information:

The determined particle size distribution relates to both shape categories. Due to the very low number of elongated particles, no separate evaluation for rods had been conducted. The smallest dimension of all particles had been considered.

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

>= 80 - ca. 100 %

Structure:

crystalline

Name:

C.I. Pigment Violet 32

Pure structure:

yes

Crystal system:

other: unknown

Typical specific surface area:

ca. 57 m²/g

Range of specific surface area:

>= 40 - <= 73 m²/g

Skeletal density:

ca. 1.454 g/cm³

Surface treatment applied:

no

PBT status:

the substance is not PBT / vPvB

Justification:

Based on evaluation of the data described below it is concluded here that Pigment Violet 32

·   is not inherently biodegradable and is considered to fulfil the P criterion

·   is not fulfilling the B (or vB) criterion

·   and is not fulfilling the T criterion

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

Overall conclusion:

Based on the assessment described in the subsections below PV32 is not considered to be PBT /vPvB.

Likely routes of exposure:

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