Registration Dossier

Administrative data

Workers - Hazard via inhalation route

Systemic effects

Long term exposure
Hazard assessment conclusion:
DNEL (Derived No Effect Level)
Value:
58.8 mg/m³
Most sensitive endpoint:
repeated dose toxicity
Route of original study:
Oral
DNEL related information
DNEL derivation method:
ECHA REACH Guidance
Overall assessment factor (AF):
30
Modified dose descriptor starting point:
NOAEC
Value:
1 763.2 mg/m³
Explanation for the modification of the dose descriptor starting point:
The original study is reliable without restrictions. The route to route extrapolation was performed by applying the equation as cited in Guidance on information requirements and chemical safety assessment, Chapter R.8 (by ECHA) with all recommended assessment factors.
AF for dose response relationship:
1
Justification:
NOAEL is the starting point for DNEL derivation. According to Guidance on information Chapter R.8, p. 30, the assessment factor is 1.
AF for differences in duration of exposure:
6
Justification:
according to Guidance on information Chapter R.8, Table 8-5, p. 29
AF for interspecies differences (allometric scaling):
1
Justification:
interspecies difference is included in the calculation by correcting the respiratory volumes of rat and man (for details refer to "justification and comments")
AF for other interspecies differences:
1
Justification:
interspecies difference is included in the calculation by correcting the respiratory volumes of rat and man (for details refer to "justification and comments")
AF for intraspecies differences:
5
Justification:
according to Guidance on information Chapter R.8, Table 8-6, p. 32
AF for the quality of the whole database:
1
Justification:
Original study is reliable without restriction
AF for remaining uncertainties:
1
Justification:
no further uncertainties assumed
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
no hazard identified
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:
500 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):
40
Modified dose descriptor starting point:
NOAEL
Value:
20 000 mg/kg bw/day
Explanation for the modification of the dose descriptor starting point:
no data for dermal pathway available, absorption rate of 100 % for oral absorption and 0,05 % for dermal absorption assumed
AF for dose response relationship:
1
Justification:
ECHA Guidance
AF for differences in duration of exposure:
2
Justification:
ECHA Guidance
AF for interspecies differences (allometric scaling):
4
Justification:
ECHA Guidance
AF for other interspecies differences:
1
Justification:
no LOAEL identified, "real" NOAEL expected to be much higher, NOAEL very conservative
AF for intraspecies differences:
5
Justification:
ECHA Guidance
AF for the quality of the whole database:
1
Justification:
ECHA Guidance
AF for remaining uncertainties:
1
Justification:
ECHA Guidance
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
no hazard identified
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

The starting point for the risk assessment is a combined repeated oral dose toxicity study with reproduction/developmental toxicity screening test according to guideline OECD 422. No adverse effects were observed in this study up to 1000 mg/kg bw/day, the highest dose tested. Therefore the NOAEL of this study was >/= 1000 mg/kg bw/day.

General Population - Hazard via inhalation route

Systemic effects

Long term exposure
Hazard assessment conclusion:
DNEL (Derived No Effect Level)
Value:
14.5 mg/m³
Most sensitive endpoint:
repeated dose toxicity
Route of original study:
Oral
DNEL related information
DNEL derivation method:
ECHA REACH Guidance
Overall assessment factor (AF):
60
Modified dose descriptor starting point:
NOAEC
Value:
869.7 mg/m³
Explanation for the modification of the dose descriptor starting point:
The original study is reliable without restrictions. The route to route extrapolation was performed by applying the equation as cited in Guidance on information requirements and chemical safety assessment, Chapter R.8 (by ECHA) with all recommended assessment factors.
AF for dose response relationship:
1
Justification:
NOAEL is the starting point for DNEL derivation. According to Guidance on information Chapter R.8, p. 30, the assessment factor is 1.
AF for differences in duration of exposure:
6
Justification:
according to Guidance on information Chapter R.8, Table 8-5, p. 29
AF for interspecies differences (allometric scaling):
1
Justification:
interspecies difference is included in the calculation by correcting the respiratory volumes of rat and man (for details refer to "justification and comments")
AF for other interspecies differences:
1
Justification:
interspecies difference is included in the calculation by correcting the respiratory volumes of rat and man (for details refer to "justification and comments")
AF for intraspecies differences:
10
Justification:
according to Guidance on information Chapter R.8, Table 8-6, p. 32
AF for the quality of the whole database:
1
Justification:
Original study is reliable without restriction
AF for remaining uncertainties:
1
Justification:
no further uncertainties assumed
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
no hazard identified
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:
DNEL (Derived No Effect Level)
Value:
250 mg/kg bw/day
Most sensitive endpoint:
repeated dose toxicity
Route of original study:
Dermal
DNEL related information
DNEL derivation method:
ECHA REACH Guidance
Overall assessment factor (AF):
80
Modified dose descriptor starting point:
NOAEL
Value:
20 000 mg/kg bw/day
Explanation for the modification of the dose descriptor starting point:
no data for dermal pathway available, absorption rate of 100 % for oral absorption and 0,05 % for dermal absorption assumed
AF for dose response relationship:
1
Justification:
ECHA Guidance
AF for differences in duration of exposure:
2
Justification:
ECHA Guidance
AF for interspecies differences (allometric scaling):
4
Justification:
ECHA Guidance
AF for other interspecies differences:
1
Justification:
no LOAEL identified, "real" NOAEL expected to be much higher, NOAEL very conservative
AF for intraspecies differences:
10
Justification:
ECHA Guidance
AF for the quality of the whole database:
1
Justification:
ECHA Guidance
AF for remaining uncertainties:
1
Justification:
ECHA Guidance
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
no hazard identified
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:
12.5 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):
80
Modified dose descriptor starting point:
NOAEL
Value:
1 000 mg/kg bw/day
Explanation for the modification of the dose descriptor starting point:
oral study
AF for dose response relationship:
1
Justification:
ECHA Guidance
AF for differences in duration of exposure:
2
Justification:
ECHA Guidance
AF for interspecies differences (allometric scaling):
4
Justification:
ECHA Guidance
AF for other interspecies differences:
1
Justification:
no LOAEL identified, "real" NOAEL expected to be much higher, NOAEL very conservative
AF for intraspecies differences:
10
Justification:
ECHA Guidance
AF for the quality of the whole database:
1
Justification:
ECHA Guidance
AF for remaining uncertainties:
1
Justification:
ECHA Guidance
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

The starting point for the risk assessment is a combined repeated oral dose toxicity study with reproduction/developmental toxicity screening test according to guideline OECD 422. No adverse effects were observed in this study up to 1000 mg/kg bw/day, the highest dose tested. Therefore the NOAEL of this study was >/= 1000 mg/kg bw/day.