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Benzenesulfonic acid, para-, monoalkylation products with C14-C18 branched olefins (C15 rich) derived from propene oligomerization, calcium salt, overbased including distillates (petroleum), hydrotreated, solvent-refined, solvent-dewaxed, or catalytic dewaxed, light or heavy paraffinic C15-C50
EC number: 701-205-4 | CAS number: -
- 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
![](https://www.echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Skin sensitisation
Administrative data
- Endpoint:
- skin sensitisation: in vivo (non-LLNA)
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- The study was conducted in compliance with OECD test guideline number 406 and Good Laboratory Practice Standards. The study merits a reliability rating of 1 according to the criteria of Klimisch as regards use of the study for the material tested. However, because the data are being use as read-across for a similar material, the reliability rating is reduced to 2, reliable with restrictions.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 993
- Report date:
- 1993
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 406 (Skin Sensitisation)
- Deviations:
- yes
- Principles of method if other than guideline:
- Due to technician error, aliquots were inadvertently not collected for the first induction. This deviation did not compromise any aspect of this study.
- GLP compliance:
- yes (incl. QA statement)
- Type of study:
- Buehler test
- Justification for non-LLNA method:
- Exisiting study
Test material
- Reference substance name:
- 156619-82-8
- Cas Number:
- 156619-82-8
- IUPAC Name:
- 156619-82-8
- Details on test material:
- Low overbased calcium alkylbenzene sulfonate derived from 80% C20-24 + 20% C14-C18 olefin blend.
Constituent 1
In vivo test system
Test animals
- Species:
- guinea pig
- Strain:
- Hartley
- Sex:
- male/female
- Details on test animals and environmental conditions:
- TEST ANIMALS
- Source: Harlan Sprague Dawley, Inc.
- Age at study initiation: 4 to 6.5 weeks
- Weight at study initiation: 327 to 468 grams
- Housing: Animals will be individually housed in wire mesh suspension cages.
- Diet (e.g. ad libitum): Ad libitum of Purina Guinea Pig Chow (or other comparable diet)
- Water (e.g. ad libitum): Ad libitum of tap water
- Acclimation period: At least 4 days
ENVIRONMENTAL CONDITIONS
- Temperature (°C):
- Humidity (%):
- Air changes (per hr):
- Photoperiod (hrs dark / hrs light): 12-hour Iight/12-hour dark cycle
IN-LIFE DATES: From:
Study design: in vivo (non-LLNA)
Inductionopen allclose all
- Route:
- epicutaneous, occlusive
- Vehicle:
- other: mineral oil
- Concentration / amount:
- A 50% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P. was chosen for use at induction. A 5% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P. was chosen for use at primary challenge.
Challengeopen allclose all
- Route:
- epicutaneous, occlusive
- Vehicle:
- other: mineral oil
- Concentration / amount:
- A 50% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P. was chosen for use at induction. A 5% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P. was chosen for use at primary challenge.
- No. of animals per dose:
- Undiluted test substance used as induction: 20 test animals and 5% w/v concentration of the test material used as primary challenge: 20 test animals and 10 naive controls.
- Details on study design:
- RANGE FINDING TESTS: Irritation tests
MAIN STUDY
A. INDUCTION EXPOSURE
- No. of exposures: 3
- Exposure period: 6 hours
- Test groups: 1
- Control group: 0
- Site: On the backs, near shoulders, of the animals
- Frequency of applications: 1
- Duration: weekly
- Concentrations: 50% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P
B. CHALLENGE EXPOSURE
- No. of exposures: 1
- Day(s) of challenge: Approximately two weeks after the last induction exposure
- Exposure period: 6 hours
- Test groups: 1
- Control group: 1 naive control group
- Site: On the backs of the animals, not the same spot as the induction dose
- Concentrations: 5% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P.
- Evaluation (hr after challenge): 24 and 48 hours after removal of test material
OTHER: No rechallenge exposures were applied. - Challenge controls:
- During the challenge phase, 5% w/v concentration of test material in Spectrum Mineral Oil Light, U.S.P. were applied to naive controls.
- Positive control substance(s):
- yes
- Remarks:
- historical
Study design: in vivo (LLNA)
- Positive control substance(s):
- other: DNCB (historical)
- Statistics:
- Arithmetic mean
Results and discussion
- Positive control results:
- Following induction of DNCB at various concentrations in acetone, a contact sensitization response was observed, thereby demonstrating the susceptibility of the test system to this sensitizing agent.
In vivo (non-LLNA)
Resultsopen allclose all
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- test chemical
- Dose level:
- 5%
- No. with + reactions:
- 14
- Total no. in group:
- 19
- Clinical observations:
- Edema was observed on site of 5 test animals. Originally 20 animals were in the test group. One animal was found dead on the day of 24 hour scoring of the primary challenge. The gross necropsy findings in this animal were those seen in agonal animals.
- Remarks on result:
- other: see Remark
- Remarks:
- Reading: 1st reading. . Hours after challenge: 24.0. Group: test group. Dose level: 5%. No with. + reactions: 14.0. Total no. in groups: 19.0. Clinical observations: Edema was observed on site of 5 test animals. Originally 20 animals were in the test group. One animal was found dead on the day of 24 hour scoring of the primary challenge. The gross necropsy findings in this animal were those seen in agonal animals..
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- test chemical
- Dose level:
- 5%
- No. with + reactions:
- 17
- Total no. in group:
- 19
- Clinical observations:
- Edema was observed on site of 5 test animals. Originally 20 animals were in the test group. One animal was found dead on the day of 24 hour scoring of the primary challenge. The gross necropsy findings in this animal were those seen in agonal animals.
- Remarks on result:
- other: see Remark
- Remarks:
- Reading: 2nd reading. . Hours after challenge: 48.0. Group: test group. Dose level: 5%. No with. + reactions: 17.0. Total no. in groups: 19.0. Clinical observations: Edema was observed on site of 5 test animals. Originally 20 animals were in the test group. One animal was found dead on the day of 24 hour scoring of the primary challenge. The gross necropsy findings in this animal were those seen in agonal animals..
- Reading:
- 1st reading
- Hours after challenge:
- 24
- Group:
- other: naive control group
- Dose level:
- 5%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 1st reading. . Hours after challenge: 24.0. Group: other: naive control group. Dose level: 5%. No with. + reactions: 0.0. Total no. in groups: 10.0.
- Reading:
- 2nd reading
- Hours after challenge:
- 48
- Group:
- other: naive control group
- Dose level:
- 5%
- No. with + reactions:
- 0
- Total no. in group:
- 10
- Remarks on result:
- other: Reading: 2nd reading. . Hours after challenge: 48.0. Group: other: naive control group. Dose level: 5%. No with. + reactions: 0.0. Total no. in groups: 10.0.
Applicant's summary and conclusion
- Interpretation of results:
- sensitising
- Remarks:
- Migrated information
- Conclusions:
- Following primary challenge using the test substance at a level of 5%, the incidence of grade 2 responses or greater in the test group (17 of 19) was compared to that of the naive control group (0 of 10). The incidence and severity of these responses in the test group were substantially greater than those produced by the naive control group indicating that sensitization had been induced.
- Executive summary:
The procedure used was based on that of Buehler. Hartley albino guinea pigs were used in this study. At the study initiation, the body
weights ranged from 327 to 468 grams (including the pilot animals) and the animals' ages ranged from approximately 4 to 6.5 weeks.
The study was initiated using 38 guinea pigs. However, due to the death of one test animal, this study was completed using 37 guinea pigs. This study was conducted in three phases as indicated: primary irritation, induction of sensitization, and primary challenge. A 50% w/v concentration of the test substance in Spectrum Mineral Oil Light, U.S.P. was chosen for use at induction. A 5% w/v concentration of test substance in Spectrum Mineral Oil Light, U.S.P. was chosen for use at primary challenge. Following primary challenge using the test substance at a level of 5%, the incidence of grade 2 responses or greater in the test group (17 of 19) was compared to that of the naive control group (0 of 10). The incidence and severity of these responses in the test group were substantially greater than those produced by the naive control group indicating that sensitization had been induced.
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