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Registration Dossier
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EC number: 205-569-0 | CAS number: 142-88-1
Toxicological Summary
Administrative data
Workers - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 2.043 mg/m³
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- By inhalation
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 37.5
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 76.626 mg/m³
- AF for other interspecies differences:
- 2.5
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
Workers - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 1.792 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- By inhalation
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 37.5
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 67.216 mg/kg bw/day
- AF for other interspecies differences:
- 2.5
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Workers - Hazard for the eyes
Local effects
- Hazard assessment conclusion:
- hazard unknown (no further information necessary)
Additional information - workers
Acute toxicity
The acute oral median lethal dose (LD50) of piperazine adipate in Rodent - rat was found to be 3782 mg/kg of body weight. Acute oral toxicity of piperazine adipate to Rodent-rat by oral route indicates that piperazine adipate does not exhibits acute toxicity by the oral route. Similarly, inhalation toxicity (LC50 value) of piperazine adipate vapours was examined for 8 hrs. and the value suggests that piperazine adipate is non toxic to mouse by the inhalation route. Also considering the use of piperazine adipate, the most likely route of exposure is oral with the dermal route of exposure being highly unlikely.Therefore,piperazine adipate is unlikely to cause acute dermal toxicity
Irritation / corrosion
Predicted results of the substance for skin and eye irritation show that the substance is not irritating to skin of rabbit and human and to the eyes of rabbit
Sensitisation
According to the quantitative structure activity relationship model prediction, piperazine adipate was predicted as not being sensitizing to rabbit skin.
General Population - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.508 mg/m³
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- By inhalation
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 75
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 38.122 mg/m³
- AF for other interspecies differences:
- 2.5
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
General Population - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.442 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- By inhalation
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 75
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 33.15 mg/kg bw/day
- AF for other interspecies differences:
- 2.5
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
General Population - Hazard via oral route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 3.585 mg/kg bw/day
- Most sensitive endpoint:
- repeated dose toxicity
- Route of original study:
- By inhalation
DNEL related information
- DNEL derivation method:
- ECHA REACH Guidance
- Overall assessment factor (AF):
- 75
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 134.432 mg/kg bw/day
- AF for other interspecies differences:
- 2.5
Acute/short term exposure
- Hazard assessment conclusion:
- no-threshold effect and/or no dose-response information available
DNEL related information
General Population - Hazard for the eyes
Local effects
- Hazard assessment conclusion:
- hazard unknown (no further information necessary)
Additional information - General Population
DNEL derivation
Piperazine adipateis not acutely toxic by the oral, dermal and inhalation route, does not show irritation effect to skin and eye, is not genotoxic and is not a developmental or reproductive toxin.
In the absence of local effects following short-term or long-term exposure, no dose-response data are available and a quantitative dose descriptor is not derived. DNEL values for local exposure are therefore not calculated.
In the absence of acute systemic toxicity, no dose-response data are available and a quantitative dose descriptor is not derived. DNEL values for acute systemic effects are therefore not calculated.
A standard approach to deriving DNEL values would be to use the repeated dose toxicity dataset and apply assessment factors as described in ECHA guidance documents. The critical endpoint is considered to be the LOEL of 152.489 mg/kg bw/d in inhalation category.
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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