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PBT assessment

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PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB

Preliminary remark

An assessment of PBT and vPvB properties of several Diarylide Pigments (structural analogues of Pigment Yellow 83) was performed by the TC NES Subgroup on Identification of PBT and vPvB substances. ECB Summary Fact Sheets (SFS) on these evaluations are available at

The following substances were evaluated:

EC no. 225-822-9; CAS no. 5102-83-0; 2,2'[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]- bis[N-(2,4-dimethylphenyl)-3-oxobutyramide]; CI Pigment Yellow 13

EC no. 226-789-3; CAS no. 5468-75-7; 2,2'[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]- bis[N-(2-methylphenyl)-3-oxobutyramide]; CI Pigment Yellow 14

EC no. 226-939-8; CAS no. 5567-15-7; 2,2'[(3,3'-dichloro[1,1'-biphenyl]-4,4'-diyl)bis(azo)]- bis[N-(4-chloro-2,5-dimethoxyphenyl)-3-oxobutyramide; CI Pigment Yellow 83

For all three pigments the TC NES Subgroup concluded that “the substance is not considered to be a PBT or a vPvB substance. It does not meet the B (or vB) criterion, or the T criterion. It is considered likely to meet the P (and vP) criterion in order to fulfil its technical specification (it is a pigment).”

Overall Conclusion

In agreement with the conclusion of the TC NES Subgroup on Identification of PBT and vPvB substances on three pigments it is concluded here that the Diarylide Yellow Pigments

- are not ready 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 not PBT or vPvB substances.

Likely routes of exposure:

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