Registration Dossier
Registration Dossier
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EC number: 272-883-2 | CAS number: 68919-10-8 A complex combination of hydrocarbons obtained from the fractionation of the liquid from the first tower used in the distillation of crude oil. It consists of saturated aliphatic hydrocarbons having carbon numbers predominantly in the range of C1 through C4.
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Freshwater
- Hazard assessment conclusion:
- no hazard identified
Marine water
- Hazard assessment conclusion:
- no hazard identified
STP
- Hazard assessment conclusion:
- no hazard identified
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:
- hazard related to composition of atmosphere identified
Hazard for terrestrial organisms
Soil
- Hazard assessment conclusion:
- no hazard identified
Hazard for predators
Secondary poisoning
- Hazard assessment conclusion:
- no potential for bioaccumulation
Additional information
Conclusion on classification
The substances in the category are gases and will predominantly partition to the atmosphere, which will limit the aquatic toxicity. Due to the difficulty associated with conducting aquatic toxicity tests, experimental data were available for only one member of this category: Benzene (CAS 71-43-2). The lowest acute and chronic toxicity values for benzene are a 96-hour LC50 for Oncorhynchus mykiss of 5.3 mg/L and a 32-day NOEC for Pimephales promelas of 0.8 mg/L. In the absence of measured data, estimated data for the other constituents of the category were calculated using the QSAR model ECOSAR (Program v1.00 in EPI Suite v4.00). The short term toxicity of the substances was calculated to range from 6.97 mg/L to 623 mg/L for the different aquatic taxonomic groups.The long term toxicity of the substances was calculated to range from 0.834 mg/L to 51.5 mg/L for the different aquatic taxonomic groups. Based on the available data, streams in this category would not meet the criteria for classification under the CLP Regulation.
The classification of each stream can be determined following the equations given in the notes below.
Note:
Under the CLP Regulations
Acute 1 applies where: Acute 1 x M ≥ 25 %
Chronic 1 applies where: Chronic 1 × M ≥ 25 %
Chronic 2 applies where: (M × 10 × Chronic 1) + Chronic 2 ≥ 25 %
Chronic 3 applies where: (M × 100 × Chronic 1) + (10 × Chronic 2) + Chronic 3 ≥ 25 %
Chronic 4 applies where: Chronic 1 + Chronic 2 + Chronic 3 + Chronic 4 ≥ 25 %
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
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