Registration Dossier
Registration Dossier
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EC number: 242-582-0 | CAS number: 18794-84-8
Toxicological Summary
Administrative data
Workers - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
- Route of original study:
- By inhalation
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
DNEL related information
Workers - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 10 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- Oral
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 100
- Dose descriptor starting point:
- NOAEL
- Value:
- 1 000 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEL
- Value:
- 1 000 mg/kg bw/day
- Explanation for the modification of the dose descriptor starting point:
Converted oral NOAEL rat (in mg/Kg bw/day) into dermal NOAEL rat (in mg/Kg bw/day) by correcting for differences in absorption between routes as well as for differences in dermal absorption between rats and humans.
Corrected dermal NOAEL
= oral NOAEL x (ABSoral-rat/ ABSdermal-rat) x (ABSdermal-rat/ABSdermal-human)
= 1000 mg/Kg bw/day x (ABSoral-rat/ ABSdermal-human)
= 1000 mg/Kg bw/day x (1/1)
Corrected dermal NOAEL = 1000 mg/Kg bw/day
Note: Dermal absorption assumed not be higher than oral absorption, therefore no default factor (i.e. factor 1) introduced when performing oral-to-dermal extrapolation (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for dose response relationship:
- 1
- Justification:
- Default assessment factor when the starting point for the DNEL calculation is a NOAEL (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for differences in duration of exposure:
- 2
- Justification:
- Default assessment factor of 2 applied when extrapolating duration of exposure from sub-chronic to chronic (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8:Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for interspecies differences (allometric scaling):
- 4
- Justification:
- Allometric scaling factor for rats compared to humans (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for other interspecies differences:
- 2.5
- Justification:
- Additional factor of 2.5 for other interspecies differences; systemic effects (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for intraspecies differences:
- 5
- Justification:
- For workers, as standard procedure for threshold effects, a default assessment factor of 5 was applied (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for the quality of the whole database:
- 1
- Justification:
- Default assessment factor applied for good/standard quality of the database, taking into account completeness, consistency and the standard information requirements (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for remaining uncertainties:
- 1
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
- Route of original study:
- Dermal
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
Workers - Hazard for the eyes
Local effects
- Hazard assessment conclusion:
- no hazard identified
Additional information - workers
General Population - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
DNEL related information
General Population - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
General Population - Hazard via oral route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 5 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- Oral
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 200
- Dose descriptor starting point:
- NOAEL
- Value:
- 1 000 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEL
- Value:
- 1 000 mg/kg bw/day
- Explanation for the modification of the dose descriptor starting point:
No modification necessary (assuming 100% absorption for both routes in both species)
Corrected Oral NOAEL= 1000 mg/Kg bw/day
Note: 100% absorption for both routes in both species assumed (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for dose response relationship:
- 1
- Justification:
- Default assessment factor when the starting point for the DNEL calculation is a NOAEL (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for differences in duration of exposure:
- 2
- Justification:
- Default assessment factor of 2 applied when extrapolating duration of exposure from sub-chronic to chronic (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for interspecies differences (allometric scaling):
- 4
- Justification:
- Allometric scaling factor for rats compared to humans (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for other interspecies differences:
- 2.5
- Justification:
- Additional factor of 2.5 for other interspecies differences; systemic effects (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for intraspecies differences:
- 10
- Justification:
- For general population, as standard procedure for threshold effects, a default assessment factor of 10 was applied (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for the quality of the whole database:
- 1
- Justification:
- Default assessment factor applied for good/standard quality of the database, taking into account completeness, consistency and the standard information requirements (ECHA Guidance on information requirements and chemical safety assessment Chapter R.8: Characterisation of dose [concentration]-response for human health, Version 2.1, November 2012).
- AF for remaining uncertainties:
- 1
Acute/short term exposure
- Hazard assessment conclusion:
- no hazard identified
DNEL related information
General Population - Hazard for the eyes
Local effects
- Hazard assessment conclusion:
- no hazard identified
Additional information - General Population
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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