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Diss Factsheets
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EC number: 201-933-8 | CAS number: 89-72-5
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
Toxicological Summary
- Administrative data
- Workers - Hazard via inhalation route
- Workers - Hazard via dermal route
- Workers - Hazard for the eyes
- Additional information - workers
- General Population - Hazard via inhalation route
- General Population - Hazard via dermal route
- General Population - Hazard via oral route
- General Population - Hazard for the eyes
- Additional information - General Population
Administrative data
Workers - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.941 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:
- 12 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEC
- Value:
- 70.6 mg/m³
- Explanation for the modification of the dose descriptor starting point:
Correction: 12 / (0.380 * 0.3*(10 / 6.7)) = 10.579 mg/kg bw (0.380 m3/kg bw is the respiratory conversion factor in rats for 8 h; Factor 0.3 is a compensation for lower expected respiratory absorption as documented under the basic toxicokinetics assessment; factor 10/6.7 is a compensation for increased respiratory rate for workers).
- AF for dose response relationship:
- 1
- Justification:
- ECHA/ default
- AF for differences in duration of exposure:
- 6
- Justification:
- ECHA default
- AF for interspecies differences (allometric scaling):
- 1
- Justification:
- Not applicable to inhalation exposure
- AF for other interspecies differences:
- 2.5
- Justification:
- ECHA default
- AF for intraspecies differences:
- 5
- Justification:
- ECHA default
- AF for the quality of the whole database:
- 1
- Justification:
- No indication that a factor for quality is needed.
- AF for remaining uncertainties:
- 1
- Justification:
- No indication that a factor is needed.
Acute/short term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
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:
- hazard unknown but no further hazard information necessary as no exposure expected
DNEL related information
Workers - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.04 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:
- 12 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEL
- Value:
- 12 mg/kg bw/day
- Explanation for the modification of the dose descriptor starting point:
Correction: 12 / (1) = 12 mg/kg bw (No compensation for route: based on the basic toxicokinetics assessment, dermal absorption is considered to be equal to oral absorption = 100 %)
- AF for dose response relationship:
- 1
- Justification:
- ECHA default
- AF for differences in duration of exposure:
- 6
- Justification:
- ECHA default
- AF for interspecies differences (allometric scaling):
- 4
- Justification:
- ECHA default
- AF for other interspecies differences:
- 2.5
- Justification:
- ECHA default
- AF for intraspecies differences:
- 5
- Justification:
- ECHA default
- AF for the quality of the whole database:
- 1
- Justification:
- No indication that a factor for quality is needed.
- AF for remaining uncertainties:
- 1
- Justification:
- No indication that a factor is needed.
Acute/short term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- medium hazard (no threshold derived)
- Most sensitive endpoint:
- skin irritation/corrosion
Acute/short term exposure
- Hazard assessment conclusion:
- medium hazard (no threshold derived)
Workers - Hazard for the eyes
Local effects
- Hazard assessment conclusion:
- medium hazard (no threshold derived)
Additional information - workers
An OECD 422 combined repeat dose and reproductive/developmental toxicity screening test was performed in rats for o-sec-butylphenol (Japan Existing Chemical Data Base). With regard to repeat dose toxicity, no animals died in any groups. Salivation after dosing, decrease in activity and incomplete eyelid opening were observed in males and females of the 300 mg/kg group. In addition, an ataxic gait was observed in females of the same group. An increase in relative liver weight was observed in males and females, and hypertrophy of the centrilobular hepatocytes in males of the 300 mg/kg group. Concentration of total cholesterol was also increased in males given 300 mg/kg. No adverse effects were detected on food consumption and body weight change in males and females of the 300 mg/kg group. In the 60 mg/kg group, decrease in locomotor activity was observed in a few males early in the administration period. The NOELs for repeat dose toxicity are considered to be 12 mg/kg/day in males and 60 mg/kg/day in females. Regarding reproductive and developmental toxicity, no adverse effects were observed on copulation, fertility, maintenance of pregnancy, delivery, and lactation. In addition, o-sec-butylphenol did not affect the viability of neonates, sex ratio, body weight changes, and morphological appearance of pups. NOELs for reproductive and developmental toxicity are considered to be 300 mg/kg/day in males, females and pups.
General Population - Hazard via inhalation route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.232 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:
- 12 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEC
- Value:
- 34.8 mg/m³
- Explanation for the modification of the dose descriptor starting point:
Correction: 12 / (1.150 * 0.3) = 5.217 mg/kg bw (1.150 m3/kg bw is the respiratory conversion factor in rats for 24 h; Factor 0.3 is a compensation for lower expected respiratory absorption as documented under the basic toxicokinetics assessment)
- AF for dose response relationship:
- 1
- Justification:
- ECHA default
- AF for differences in duration of exposure:
- 6
- Justification:
- ECHA default
- AF for interspecies differences (allometric scaling):
- 1
- Justification:
- Not applicable for inhalation
- AF for other interspecies differences:
- 2.5
- Justification:
- ECHA default
- AF for intraspecies differences:
- 10
- Justification:
- ECHA default
- AF for the quality of the whole database:
- 1
- Justification:
- No indication that a factor for quality is needed.
- AF for remaining uncertainties:
- 1
- Justification:
- No indication that a factor is needed.
Acute/short term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
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:
- hazard unknown but no further hazard information necessary as no exposure expected
DNEL related information
General Population - Hazard via dermal route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.02 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:
- 12 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEL
- Value:
- 12 mg/kg bw/day
- Explanation for the modification of the dose descriptor starting point:
Correction: 12 / (1) = 12 mg/kg bw (No compensation for route: based on the basic toxicokinetics assessment, dermal absorption is considered to be equal to oral absorption = 100 %)
- AF for dose response relationship:
- 1
- Justification:
- ECHA default
- AF for differences in duration of exposure:
- 6
- Justification:
- ECHA default
- AF for interspecies differences (allometric scaling):
- 4
- Justification:
- ECHA default
- AF for other interspecies differences:
- 2.5
- Justification:
- ECHA default
- AF for intraspecies differences:
- 10
- Justification:
- ECHA default
- AF for the quality of the whole database:
- 1
- Justification:
- No indication that a factor for quality is needed.
- AF for remaining uncertainties:
- 1
- Justification:
- No indication that a factor is needed.
Acute/short term exposure
- Hazard assessment conclusion:
- hazard unknown but no further hazard information necessary as no exposure expected
DNEL related information
Local effects
Long term exposure
- Hazard assessment conclusion:
- medium hazard (no threshold derived)
Acute/short term exposure
- Hazard assessment conclusion:
- medium hazard (no threshold derived)
General Population - Hazard via oral route
Systemic effects
Long term exposure
- Hazard assessment conclusion:
- DNEL (Derived No Effect Level)
- Value:
- 0.02 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:
- 12 mg/kg bw/day
- Modified dose descriptor starting point:
- NOAEL
- Value:
- 12 mg/kg bw/day
- Explanation for the modification of the dose descriptor starting point:
Correction: 12 / (1) = 12 mg/kg bw (No comp. for route)
- AF for dose response relationship:
- 1
- Justification:
- ECHA default
- AF for differences in duration of exposure:
- 6
- Justification:
- ECHA default
- AF for interspecies differences (allometric scaling):
- 4
- Justification:
- ECHA default
- AF for other interspecies differences:
- 2.5
- Justification:
- ECHA default
- AF for intraspecies differences:
- 10
- Justification:
- ECHA default
- AF for the quality of the whole database:
- 1
- Justification:
- No indication that a factor for quality is needed.
- AF for remaining uncertainties:
- 1
- Justification:
- No indication that a factor is needed.
Acute/short term exposure
- Hazard assessment conclusion:
- low hazard (no threshold derived)
DNEL related information
- Explanation for the modification of the dose descriptor starting point:
Acute toxicity oral: LD50 in Sprague-Dawley strain rat > 200 - < 2000 mg/kg bodyweight (H301).
General Population - Hazard for the eyes
Local effects
- Hazard assessment conclusion:
- medium hazard (no threshold derived)
Additional information - General Population
An OECD 422 combined repeat dose and reproductive/developmental toxicity screening test was performed in rats for o-sec-butylphenol (Japan Existing Chemical Data Base). With regard to repeat dose toxicity, no animals died in any groups. Salivation after dosing, decrease in activity and incomplete eyelid opening were observed in males and females of the 300 mg/kg group. In addition, an ataxic gait was observed in females of the same group. An increase in relative liver weight was observed in males and females, and hypertrophy of the centrilobular hepatocytes in males of the 300 mg/kg group. Concentration of total cholesterol was also increased in males given 300 mg/kg. No adverse effects were detected on food consumption and body weight change in males and females of the 300 mg/kg group. In the 60 mg/kg group, decrease in locomotor activity was observed in a few males early in the administration period. The NOELs for repeat dose toxicity are considered to be 12 mg/kg/day in males and 60 mg/kg/day in females. Regarding reproductive and developmental toxicity, no adverse effects were observed on copulation, fertility, maintenance of pregnancy, delivery, and lactation. In addition, o-sec-butylphenol did not affect the viability of neonates, sex ratio, body weight changes, and morphological appearance of pups. NOELs for reproductive and developmental toxicity are considered to be 300 mg/kg/day in males, females and pups.
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.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.