Sodium 3-nitrobenzenesulphonate

Ecotoxicological Summary

Hazard for aquatic organisms

Freshwater

Hazard assessment conclusion:

PNEC aqua (freshwater)

PNEC value:

1 mg/L

Assessment factor:

100

Extrapolation method:

assessment factor

Marine water

Hazard assessment conclusion:

PNEC aqua (marine water)

PNEC value:

0.1 mg/L

Assessment factor:

1 000

Extrapolation method:

assessment factor

STP

Hazard assessment conclusion:

PNEC STP

PNEC value:

1 000 mg/L

Assessment factor:

10

Extrapolation method:

assessment factor

Sediment (freshwater)

Hazard assessment conclusion:

PNEC sediment (freshwater)

PNEC value:

6.17 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Sediment (marine water)

Hazard assessment conclusion:

PNEC sediment (marine water)

PNEC value:

0.617 mg/kg sediment dw

Extrapolation method:

equilibrium partitioning method

Hazard for air

Air

Hazard assessment conclusion:

no hazard identified

Hazard for terrestrial organisms

Soil

Hazard assessment conclusion:

PNEC soil

PNEC value:

0.647 mg/kg soil dw

Extrapolation method:

equilibrium partitioning method

Hazard for predators

Secondary poisoning

Hazard assessment conclusion:

no potential for bioaccumulation

Additional information

Classification is not triggered based on available data, according to REGULATION (EC) No 1272/2008 OF THE EUROPEAN PARLIAMENT AND OF THE COUNCIL on classification, labelling and packaging of substances and mixtures, amending and repealing Directives 67/548/EEC and 1999/45/EC, and amending Regulation (EC) No 1907/2006.

Conclusion on classification

Classification of sodium 3-nitrobenzenesulphonate for effects in the environment

Several major guideline – estimation values (Klimisch 2) are available for sodium 3-nitrobenzenesulphonate,indicates no toxic effect in fish and any other tropic levels.Thus,the value which have been considered for further calculation(fish) is LC50 = 500 mg/L.

 

In determining the classification appropriate to sodium 3-nitrobenzenesulphonate, it is necessary to consider all available evidence concerning its persistence, potential to accumulate and predicted or observed environmental fate and behavior that may present a long-term and/or delayed danger to the structure and/or functioning of aquatic ecosystems. These points are considered below.

 

Persistence

Reliable studies are available to demonstrate that sodium 3-nitrobenzenesulphonate is non persistent in nature and so is considered to have rapid biodegradation in the environment. In other words sodium 3-nitrobenzenesulphonate degradation may therefore be expected to be fast. Thus it can be inferred that sodium 3-nitrobenzenesulphonate is non persistent in character. 

 

Sodium 3-nitrobenzenesulphonate is non persistent and so do not satisfy the criteria for classification as persistent (P). 

 

Potential to accumulate

Predicted and measured log Kow values for sodium 3-nitrobenzenesulphonate is less than 4 (Log Kow = -1.292).The potential for sodium 3-nitrobenzenesulphonate to bioaccumulate in the tissues of organisms that inhabit aquatic or terrestrial matrices is negligible as the BCF factor for the substance is less than 1000.  

The calculated BCF of sodium 3-nitrobenzenesulphonate is 3.2 dimensionless and below the threshold of 2000. 

 

Sodium 3-nitrobenzenesulphonate does not satisfy the criterion for classification as bioaccumulative (B).

The toxicity values of fish, invertebrates and algae are LC50 = 500 mg/L, LC50 = 8670mg/L and NOEC = 61.22781mg/L, respectively. The end point result values indicate that the substance will not have any toxic effect as the values are beyond the classifying range. So, the substance will not qualify for classification as per the CLP regulation.  

 

So, sodium 3-nitrobenzenesulphonate does not satisfy the environmental effects criterion for classification as toxic (T).

 

Thus it can be inferred that sodium 3-nitrobenzenesulphonate isneither P & B (including vPvB) substance, nor will qualify as T. Thus, the chemical is not a PBT (vPVB)