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Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

Reference
Name:
2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
Type of composition:
boundary composition of the substance
State / form:
solid: nanoform
Reference substance:
2-[(4-methyl-2-nitrophenyl)azo]-3-oxo-N-phenylbutyramide
Type of information reported:
single nanoform
Name of nanoform:
C.I. Pigment Yellow 1-joint submission
Shape category:
elongated
Shape:
rod
Pure shape:
no
Range:
> 5 - < 60 %
Shape category:
spheroidal
Shape:
spherical
Pure shape:
no
Range:
> 0 - < 20 %
Shape category:
spheroidal
Shape:
cubic
Pure shape:
no
Range:
> 50 - < 70 %
Shape category:
elongated
Percentile:
D90
Range:
> 0.07 - < 0.155 μm
Percentile:
D50
Range:
> 0.03 - < 0.1 μm
Percentile:
D10
Range:
> 0.01 - < 0.09 μm
Range of length:
> 0.075 - < 0.585 μm
Range of aspect ratio (:1):
>= 2.8 - <= 5
Additional information:
The determined particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.

ASSEMBLY STRUCTURE: homogeneous and solid particles.

RIGIDITY: not required/appropriate.
Fraction of constituent particles in the size range 1-100 nm:
> 50 - < 100 %
Shape category:
spheroidal
Percentile:
D90
Range:
> 0.07 - < 0.155 μm
Percentile:
D50
Range:
> 0.03 - < 0.1 μm
Percentile:
D10
Range:
> 0.01 - < 0.09 μm
Additional information:
The determined particle size distribution relates to both shape categories. The smallest dimension of all particles had been considered.

ASSEMBLY STRUCTURE: homogeneous and solid particles.

RIGIDITY: not required/appropriate.
Fraction of constituent particles in the size range 1-100 nm:
> 50 - < 100 %
Structure:
crystalline
Name:
C.I. Pigment Yellow 1
Pure structure:
yes
Range of specific surface area:
>= 5 - <= 125 m²/g
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 submission substance


·   is not readily and 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 a PBT nor a vPvB substance.


 


Overall conclusion:


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

Likely routes of exposure:

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