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Classification & Labelling & PBT assessment

PBT assessment

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Administrative data

PBT assessment: overall result

PBT status:
the substance is not PBT / vPvB

Classification of 7-[[2-[(aminocarbonyl)amino]-4-[[4-chloro-6-[[4-[vinylsulphonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid, sodium salt for effects in the environment:


7-[[2-[(aminocarbonyl)amino]-4-[[4-chloro-6-[[4-[vinylsulphonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid, sodium salt (CAS no. 94158-80-2) has a wide variety of uses such as: intermediate for chemical synthesis and as a laboratory agent. The aim of the PBT assessment was to evaluate whether this chemical fulfils the PBT criterion within Annex XIII. The PBT assessment were based on toxicological information in conjunction with standardized environmental fate- and bioaccumulation models. Here follows a description of the PBT assessment.



Persistence assessment

The tested substance fulfils the P criterion within Annex XIII based on the assessment that here follows:


Biotic degradation

The ultimate biodegradation estimate in the Biowin model (EPI suite version 4.1) shows that 7-[[2-[(aminocarbonyl)amino]-4-[[4-chloro-6-[[4-[vinylsulphonyl]phenyl]amino]-1,3,5-triazin-2-yl]amino]phenyl]azo]naphthalene-1,3,6-trisulphonic acid, sodium salt is not readily biodegradable (Biowin 2= 0.0000, BIOWIN 3= 0.7463, BIOWIN 6= 0.0000).


Environmental fate

According to the fugacity model levels III, the most likely environmental fate for this test chemical is soil and sediment (i.e.estimated to 52.3 and 47.2% respectively). The Koc-value was estimated to 25780000 at 25ºC (KOCWIN program) indicating negligible mobility and very high adsorption potential.

The tested chemical is therefore not expected to leach from soil and sediment. The half-life in soil and sediment (360 days and 1620.83 days, respectively estimated by EPI suite) indicates that the exposure risk to soil-dwelling organism should therefore be high.

If released in to the environment, only 0.56 % of the chemical will partition into water according to the Mackay fugacity model level III in EPI suite version 4.1 (2016). However, the estimated half-life (180 days in water estimated by EPI suite) also indicates that substance is likely to be persistent.


Bioaccumulation assessment

The tested substance does not fulfil the B criterion within Annex XIII based on the assessment that here follows:


The BCF value is estimated to be 3.162 L/kg (calculated by EPI suite version 4.1, 2016) and the estimated Log Kow values are. -3.51 and 0.48 at 25ºC (EPI suite version 4.1 and Danish EPA QSAR, 2016). If this chemical is released into the aquatic environment, there should be a low risk for the chemical to bioaccumulate in fish and food chains.


Toxicity assessment

The tested substance does not fulfil the T criterion within Annex XIII based on the assessment that here follows:



The tested chemical is regarded to be not classified for carcinogenicity, mutagenicity and reprotoxicity, Further, there is no evidence of chronic toxicity, as identified by the classifications STOT (repeated exposure), category 1(oral, dermal, inhalation of gases/vapours, inhalation of dust/mist/fume) or category 2 (oral, dermal, inhalation of gases/vapours, inhalation of dust/mist/fume).


Aquatic organisms

All available short-term eco-toxicity estimation for fish, invertebrates and algae for the substance indicates the LC50/EC50 value are above 100 mg/L indicating that the substance is classified as non-hazardous as per the CLP criteria.These values suggest classification for aquatic toxicity will not be applicable for all of the tropic levels.The chemical was therefore not considered as hazardous to aquatic environments as per the criteria set out in Annex XIII.




Based on critical, independent and collective evaluation of information summarized herein, the tested compound fulfils only the P criterion within Annex XIII. The tested chemical does not fulfil the B and T criterion and has therefore not been classified as a PBT compound within Annex XIII.