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Administrative data

Workers - Hazard via inhalation route

Systemic effects

Long term exposure
Hazard assessment conclusion:
DNEL (Derived No Effect Level)
Value:
4.93 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):
75
Dose descriptor starting point:
NOAEL
Value:
300 mg/kg bw/day
Modified dose descriptor starting point:
NOAEC
Value:
370.3 mg/m³
Explanation for the modification of the dose descriptor starting point:
Dose descriptor: NOAEL (oral) = 300 mg/kg/d. NOAEC corrected = 300 x 1/0.38 x 6.7/10 x 0,5 x 7/5 = 370,3 mg/m3
AF for dose response relationship:
1
Justification:
This factor is applied because the dose-descriptor starting point is a NOAEC.
AF for differences in duration of exposure:
6
Justification:
DNEL is based on a subacute study (28-day, OECD 422).
AF for interspecies differences (allometric scaling):
1
Justification:
AF not used for inhalation.
AF for other interspecies differences:
2.5
Justification:
A factor of 2.5 is applied for remaining difference.
AF for intraspecies differences:
5
Justification:
A factor of 5 is applied for worker DNELs.
AF for the quality of the whole database:
1
Justification:
The key study chosen for DNEL calculation is considered as a reliable study.
AF for remaining uncertainties:
1
Justification:
No additional factor is added for read-across because the worst case scenario is planned (the study was performed on a C4 methacrylate and the registered substance is a C10 methacrylate, less absorbed by definition than C4).
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
Route of original study:
By inhalation
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
no hazard identified
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
DNEL related information

Workers - Hazard via dermal route

Systemic effects

Long term exposure
Hazard assessment conclusion:
DNEL (Derived No Effect Level)
Value:
7 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):
300
Dose descriptor starting point:
NOAEL
Value:
300 mg/kg bw/day
Modified dose descriptor starting point:
NOAEL
Value:
2 100 mg/kg bw/day
Explanation for the modification of the dose descriptor starting point:
NOAEC corrected = NOAEL (oral) x ABS ORAL / ABS DERMAL x EXPO = 300 x 50 / 10 x 7/5 = 2100 mg/kg
AF for dose response relationship:
1
Justification:
This factor is applied because the dose-descriptor starting point is a NOAEL.
AF for differences in duration of exposure:
6
Justification:
DNEL is based on a subacute study (28-day, OECD 422).
AF for interspecies differences (allometric scaling):
4
Justification:
An allometric scaling factor of 4 must be applied because the key study was performed on rats.
AF for other interspecies differences:
2.5
Justification:
A factor of 2.5 is applied for remaining difference.
AF for intraspecies differences:
5
Justification:
A factor of 5 is applied for worker DNELs.
AF for the quality of the whole database:
1
Justification:
The key study chosen for DNEL calculation is considered as a reliable study.
AF for remaining uncertainties:
1
Justification:
No additional factor is added for read-across because the worst case scenario is planned (the study was performed on a C4 methacrylate and the registered substance is a C10 methacrylate, less absorbed by definition than C4).
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
Route of original study:
Dermal
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
medium hazard (no threshold derived)
Most sensitive endpoint:
sensitisation (skin)
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:
DNEL (Derived No Effect Level)
Value:
0.87 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):
150
Dose descriptor starting point:
NOAEL
Value:
300 mg/kg bw/day
Modified dose descriptor starting point:
NOAEC
Value:
130.5 mg/m³
Explanation for the modification of the dose descriptor starting point:
Dose descriptor: NOAEL (oral) = 300 mg/kg/d. NOAEC corrected = 300 x 1/1.15 x 0.5 = 130.5 mg/m3
AF for dose response relationship:
1
Justification:
This factor is applied because the dose-descriptor starting point is a NOAEC.
AF for differences in duration of exposure:
6
Justification:
DNEL is based on a subacute study (28-day, OECD 422).
AF for interspecies differences (allometric scaling):
1
Justification:
AF not used for inhalation.
AF for other interspecies differences:
2.5
Justification:
A factor of 2.5 is applied for remaining difference.
AF for intraspecies differences:
10
Justification:
A factor of 10 is applied for the general population DNELs.
AF for the quality of the whole database:
1
Justification:
The key study chosen for DNEL calculation is considered as a reliable study.
AF for remaining uncertainties:
1
Justification:
No additional factor is added for read-across because the worst case scenario is planned (the study was performed on a C4 methacrylate and the registered substance is a C10 methacrylate, less absorbed by definition than C4).
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
Route of original study:
By inhalation
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
no hazard identified
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
DNEL related information

General Population - Hazard via dermal route

Systemic effects

Long term exposure
Hazard assessment conclusion:
DNEL (Derived No Effect Level)
Value:
2.5 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):
600
Dose descriptor starting point:
NOAEL
Value:
300 mg/kg bw/day
Modified dose descriptor starting point:
NOAEL
Value:
1 500 mg/kg bw/day
Explanation for the modification of the dose descriptor starting point:
NOAEL corrected = NOAEL oral x ABS oral / ABS dermal = 300 x 50 / 10 = 1500 mg/kg
AF for dose response relationship:
1
Justification:
This factor is applied because the dose-descriptor starting point is a NOAEL.
AF for differences in duration of exposure:
6
Justification:
DNEL is based on a subacute study (28-day, OECD 422).
AF for interspecies differences (allometric scaling):
4
Justification:
An allometric scaling factor of 4 must be applied because the key study was performed on rats.
AF for other interspecies differences:
2.5
Justification:
A factor of 2.5 is applied for remaining difference.
AF for intraspecies differences:
10
Justification:
A factor of 10 is applied for the general population DNELs.
AF for the quality of the whole database:
1
Justification:
The key study chosen for DNEL calculation is considered as a reliable study.
AF for remaining uncertainties:
1
Justification:
No additional factor is added for read-across because the worst case scenario is planned (the study was performed on a C4 methacrylate and the registered substance is a C10 methacrylate, less absorbed by definition than C4).
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
Route of original study:
Dermal
DNEL related information

Local effects

Long term exposure
Hazard assessment conclusion:
medium hazard (no threshold derived)
Most sensitive endpoint:
sensitisation (skin)
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
skin irritation/corrosion

General Population - Hazard via oral route

Systemic effects

Long term exposure
Hazard assessment conclusion:
DNEL (Derived No Effect Level)
Value:
0.5 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):
600
Dose descriptor starting point:
NOAEL
Value:
300 mg/kg bw/day
Modified dose descriptor starting point:
NOAEL
Value:
300 mg/kg bw/day
AF for dose response relationship:
1
Justification:
This factor is applied because the dose-descriptor starting point is a NOAEL.
AF for differences in duration of exposure:
6
Justification:
DNEL is based on a subacute study (28-day, OECD 422).
AF for interspecies differences (allometric scaling):
4
Justification:
An allometric scaling factor of 4 must be applied because the key study was performed on rats.
AF for other interspecies differences:
2.5
Justification:
A factor of 2.5 is applied for remaining difference.
AF for intraspecies differences:
10
Justification:
A factor of 10 is applied for the general population DNELs.
AF for the quality of the whole database:
1
Justification:
The key study chosen for DNEL calculation is considered as a reliable study.
AF for remaining uncertainties:
1
Justification:
No additional factor is added for read-across because the worst case scenario is planned (the study was performed on a C4 methacrylate and the registered substance is a C10 methacrylate, less absorbed by definition than C4).
Acute/short term exposure
Hazard assessment conclusion:
no hazard identified
Most sensitive endpoint:
acute toxicity
Route of original study:
Oral
DNEL related information

General Population - Hazard for the eyes

Local effects

Hazard assessment conclusion:
no hazard identified

Additional information - General Population