Registration Dossier
Registration Dossier
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EC number: 254-879-2 | CAS number: 40306-75-0
Toxicological Summary
Administrative data
Workers - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 13.157 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:
- other: LOEL
- Value:
- 789.403 mg/m³
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:
- 7.462 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):
- 60
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 447.721 mg/kg bw/day
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
Toxicokinetics:
According to Danish QSAR study dermal absorption value of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid is estimated to be 0.00001 mg/cm2/event (VERY LOW). Thus in case the substance,3-acetamido-5-amino-4-hydroxybenzenesulphonic acid, is absorbed (though in small quantity) it will not be accumulated in the body. This is supported by the fact that the substance have not only low BCF value but also have a moderate level of Kow which will support the reasoning that though the substance will enter the body but will get distributed through the lipid in the body.
Acute toxicity
Acute dermal toxicity of 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid has not been observed for any of the exposure route of oral, dermal and inhalation and so the substance will not be considered for classification as per the C&L regulation.
Irritation / corrosion
The substance will not be considered for classification in any of the irritation activity as the end point data indicates that 3-acetamido-5-amino-4-hydroxy benzene sulphonic acid is non irritating in nature.
Sensitisation
As per the QSAR prediction, the test material, 3-acetamido-5-amino-4-hydroxybenzenesulphonic acid, was estimated to be non sensitizing to skin of human and so will not be considered for classification as per the C&L regulation.
General Population - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 3.244 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):
- 120
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 389.323 mg/m³
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:
- 3.731 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):
- 120
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 447.721 mg/kg bw/day
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:
- 7.499 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):
- 120
- Modified dose descriptor starting point:
- other: LOEL
- Value:
- 449.96 mg/kg bw/day
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
3-acetamido-5-amino-4-hydroxybenzenesulphonic acid does not have any acute toxicity to any of the route of exposure that is inhalation, dermal and oral route. Moreover do not show irritation effect to skin and eye, is neither genotoxic and is nor 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 of895.4425mg/kg/ bw in oral 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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