Registration Dossier
Registration Dossier
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EC number: 226-854-6 | CAS number: 5510-99-6
Endpoint summary
Administrative data
Description of key information
Acute toxicity oral: LD50 in Sprague-Dawley rat >200-<2000 mg/kg body weight. Xn, R22. (OECD 203)
Key value for chemical safety assessment
Acute toxicity: via oral route
Endpoint conclusion
- Dose descriptor:
- LD50
- Value:
- 200 mg/kg bw
Additional information
Acute toxicity oral:
Phenol 2,6 -bis(1 -methylpropyl) was evaluated for its acute oral toxicity in the Sprague-Dawley strain rat. The acute oral median lethal dose (LD50) of the test material was found to be greater than 200 mg/kg bodyweight but less than 2000 mg/kg bodyweight. The symbol "Xn" and risk phrase R 22 "harmful if swallowed" are required according to EEC labelling regulations.
Test method:
The method used for the test followed that described in the OECD Guidelines for Testing of Chemicals (1987) No. 401 "Acute Oral Toxicity" referenced as Method B1 in Commission Directive 84/449/EEC (which constitutes Annex V of Council Directive 67/548/EEC). The results may be used as a basis for classification and labelling under annex VI of Council Directive 67/548/EEC (as adapted to technical progress by Commission Directive 91/325/EEC).
Following a range-finding study, a group of ten fasted animals (five males and five females) was given a single oral dose of test material, as a solution/suspension in arachis oil B.P. at a dose level of 200 mg/kg bodyweight. The animals were observed for fourteen days after the day of dosing and were then killed for gross pathological examination.There were no deaths. Common signs of systemic toxicity noted were hunched posture and/or lethargy with additional signs of ataxia. Animals appeared normal one or two days after dosing. All animals showed expected gain in body weight during the study. No abnormalities were noted at necropsy.
Justification for classification or non-classification
Acute toxicity oral:
LD50 value indicates that the symbol "Xn" and risk phrase R 22 "harmful if swallowed" are required according to EEC labelling regulations.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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