Registration Dossier
Registration Dossier
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EC number: 903-139-3 | CAS number: -
Endpoint summary
Administrative data
Description of key information
Additional information
Aquatic toxicity
Short-term toxicity to fish
A publication is available describing the toxicity of the test substance on Danio rerio after 96 hours of exposure. The study was performed according to OECD Draft 1980 and ISO TC 147/SCS/WG3 final proposal and revealed a LC50 of 530 mg/L. In addition study data of other category members are available all revealing LC50 values well above 100 mg/L.
Long-term toxicity to fish
In Annex IX of Regulation (EC) No 1907/2006, it is laid down that long-term toxicity testing shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on aquatic organisms. According to Annex I of this regulation, the chemical safety assessment triggers further action when the substance or the preparation meets the criteria for classification as dangerous according to Directive 67/548/EEC or Directive 1999/45/EC or is assessed to be a PBT or vPvB. The hazard assessment of pentanol, branched and linear reveals neither a need to classify the substance as dangerous for the environment, nor is it a PBT or vPvB substance, nor are there any further indications that the substance may be hazardous to the environment. Therefore, and for reasons of animal welfare, a long-term toxicity study in fish is not provided.
Short-term toxicity to aquatic invertebrates
The acute toxicity of the test substance pentanol, branchend and linear was determined in a static 48 hours GLP study with Daphnia magna according to OECD 202 (BASF 2011). The EC50 value of this substance was determined to be nominal greater than 120 mg/L. In conclusion, the 48h-EC50 value of the test substance and of the read across category members was determined to be greater than 100 mg/L. The EC50 value determined with the read-across substance 3-methylbutan-1-ol was chosen as “key value” and used for PNEC derivation, reflecting a worst-case scenario.
Long-term toxicity to aquatic invertebrates
In Annex IX of Regulation (EC) No 1907/2006, it is laid down that long-term toxicity testing shall be proposed by the registrant if the chemical safety assessment indicates the need to investigate further the effects on aquatic organisms.
According to Annex I of this regulation, the chemical safety assessment triggers further action when the substance or the preparation meets the criteria for classification as dangerous according to Directive 67/548/EEC or Directive 1999/45/EC or is assessed to be a PBT or vPvB.
The hazard assessment of pentanol, branched and linear reveals neither a need to classify the substance as dangerous for the environment, nor is it a PBT or vPvB substance, nor are there any further indications that the substance may be hazardous to the environment. Therefore a long-term toxicity study in aquatic invertebrates is not provided.
Toxicity to algae and cyanobacteria
The toxicity of the test substance to the freshwater alga Pseudokirchneriella subcapitata was determined according to OECD 201. After 72 hours the NOEC, the EC10 and the EC50 were determined to be greater than 320 mg/L. In addition study results are available for the other category members, revealing EC50 and EC10 values well above 100 mg/L.
Toxicity to aquatic plants other than algae
Data on toxictiy to aquatic plant other than algae are not required for REACh registration.
Toxicity to microorganisms
A study according to OECD 209 (BASF 2010) was performed to determine the toxic effects of the test substance on the oxygen consumption rate of aerobic micro-organisms (activated sludge) after 180 min. The EC50 was determined to be greater than 1000 mg/L and the EC10 was determined to be 370 mg/L.
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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