Registration Dossier
Registration Dossier
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EC number: 270-732-5 | CAS number: 68477-42-9 A complex combination of hydrocarbons obtained from extractive distillation of saturated and unsaturated aliphatic hydrocarbons usually ranging in carbon numbers from C3 through C5, predominantly C4. It consists of saturated and unsaturated hydrocarbons having carbon numbers predominantly in the range of C3 through C5, predominantly butenes and isobutylene.
Ecotoxicological Summary
Administrative data
Hazard for aquatic organisms
Hazard for air
Hazard for terrestrial organisms
Hazard for predators
Additional information
Members of this category are gases and are extremely unlikely to reside in the aquatic or terrestrial compartment. Deriving an aquatic or soil PNEC for a gas is unreasonable and technically of little use for risk assessment as the substance will not be present in the aquatic or terrestrial environment.
Conclusion on classification
The members of the category, 68955-28-2, 87741-01-3 and 92045-23-3 are listed in Annex I but are not classified for environmental hazards. Additionally the major constituent component- 1, 3 butadiene is also listed but not classified for environmental hazards. The category C4 high 1,3,- butadiene (>0.1%) would not be classified for environmental hazards.
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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