Registration Dossier
Registration Dossier
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EC number: 265-187-5 | CAS number: 64742-83-2 A complex combination of hydrocarbons obtained by the distillation of the products from a steam cracking process. It consists predominantly of unsaturated hydrocarbons having carbon numbers predominantly in the range of C4 through C11 and boiling in the range of approximately minus 20°C to 190°C (-4°F to 374°F). This stream is likely to contain 10 vol. % or more benzene.
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Marine water
- Hazard assessment conclusion:
- no data available: testing technically not feasible
STP
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (freshwater)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Sediment (marine water)
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for air
Air
- Hazard assessment conclusion:
- no hazard identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no data available: testing technically not feasible
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
Experimental data is available for the acute aquatic toxicity to fish, invertebrates and algae of 1 member of this category (CAS Numbers: 68921-67-5 and 68513-69-9). Similar sensitivity was found in all three trophic levels: fish (O. mykiss) 96 hr LL50= 1.1 mg/L; invertebrates (D. magna) 48hr EL50= 1.2 mg/L; algae (P. subcapitata) 72 hr ErL50= 2.3 mg/L.
PETROTOX QSAR data was also considered for CLP for the Lead Registrant samples when no experimental data for a stream was available. The predicted LL50values for all three trophic levels ranged from 3.07 to 23.3 mg/L, whereas the predicted EL10values for all three trophic levels ranged from 0.403 to 4.44 mg/L.
Based on the available experimental acute toxicity data of 1 member of this category and predicted acute toxicity data of the representative constituents of these streams, according to Table 4.1.0 (a) of CLP Regulations, the streams in this category would not warrant the classification as Acute Aquatic 1 (H400).
Based on the predicted chronic toxicity data of the representative constituents of these streams, according to Table 4.1.0 (b)(i) of CLP Regulations the streams in this category would warrant the classification of Chronic Category 2 (H411).
Based on acute and chronic aquatic classifications of the constituents of these streams and Classification Criteria for Mixtures, as laid down in CLP Regulations, the streams in this category should have a minimum classifications of Chronic Category 2 (H411). Other streams in the category would warrant an Acute Aquatic 1 (H400) and Chronic Aquatic 1 (H410).
Conclusion
Based on acute and chronic aquatic classifications of the constituents of the streams and Classification Criteria for Mixtures as laid down in CLP Regulations, the streams in this category should have the classifications of Chronic Category 2 (H411) or Acute Aquatic 1 (H400) and Chronic Aquatic 1 (H410).
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