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EC number: 246-680-4 | CAS number: 25155-30-0
Skin irritation / corrosion
Administrative data
- Endpoint:
- skin irritation: in vivo
- Type of information:
- other: published data
- Adequacy of study:
- key study
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- study well documented, meets generally accepted scientific principles, acceptable for assessment
- Justification for type of information:
- Dodecylbenzene sulfonic acids (CAS# 27176-87-0 , EC Number; 248-289-4) ) is a very close analogue of Sodium dodecylbenzenesulfonate (CAS No. 25155-30-0, EC Number; 246-680-4) ) and the dissociated acid it readily dissociates in water and release the dodecylbenzene sulfonic anion in solution.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 980
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Draize Test 1965
- Principles of method if other than guideline:
- The test material was applied as submitted to the intact skin and covered with a "1 x 1" gauze patch held in place with saran wrap. At the end of 4 hours, the coverings were removed and the area examined for skin irritation and corrosion. Examinations were repeated at 24 and 48 hours and scored according to Draize 1965.
- GLP compliance:
- yes
Test material
- Reference substance name:
- Dodecylbenzenesulphonic acid
- EC Number:
- 248-289-4
- EC Name:
- Dodecylbenzenesulphonic acid
- Cas Number:
- 27176-87-0
- Molecular formula:
- C18H30O3S
- IUPAC Name:
- Dodecylbenzenesulfonic acid
- Test material form:
- liquid
- Details on test material:
- - Name of test material (as cited in study report):Benzene sulfonic acid dodecyl- (27176-87-0).
Dodecylbenzene sulfonic acids (CAS# 27176-87-0 , EC Number; 248-289-4) ) is a very close analogue of Sodium dodecylbenzenesulfonate (CAS No. 25155-30-0, EC Number; 246-680-4) ) and the dissociated acid it readily dissociates in water and release the dodecylbenzene sulfonic anion in solution.
Constituent 1
Test animals
- Species:
- rabbit
- Strain:
- New Zealand White
- Details on test animals or test system and environmental conditions:
- Male and female white New Zealand rabbits weight between 4 and 5.6 kg each. Animals were marked with a 5 digit number and held in steel cages. They were acclimated for 14 days prior to testing. Standard rabbit diet and water was provided ad libitum. Room temperature was held at 20 degrees C +/- 1 degree C, humidity at 60 +/- 5%, with a 12/12 hour light/dark cycle.
Test system
- Type of coverage:
- semiocclusive
- Preparation of test site:
- shaved
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not specified
- Amount / concentration applied:
- 0.5 mL
- Duration of treatment / exposure:
- 4 hours
- Observation period:
- Observations were made after 4, 24, and 48 hours,
- Number of animals:
- 6 (3 male, 3 female)
- Details on study design:
- The test material was applied as submitted to the intact skin and covered with a "1 x 1" gauze patch held in place with saran wrap. At the end of 4 hours, the coverings were removed and the area examined for skin irritation and corrosion. Examinations were repeated at 24 and 48 hours and scored according to Draize 1965.
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- primary dermal irritation index (PDII)
- Basis:
- mean
- Time point:
- other: 4 hours
- Score:
- 3.4
- Reversibility:
- not reversible
- Remarks on result:
- other: highly irritating
- Irritation parameter:
- primary dermal irritation index (PDII)
- Basis:
- mean
- Time point:
- other: 24 hours
- Score:
- 6.3
- Reversibility:
- not reversible
- Irritation parameter:
- primary dermal irritation index (PDII)
- Basis:
- mean
- Time point:
- other: 48 hours
- Score:
- 7
- Reversibility:
- not reversible
Applicant's summary and conclusion
- Interpretation of results:
- Category 1C (corrosive) based on GHS criteria
- Conclusions:
- Result: corrosive
EC Classification: irritating at 0.5 mL - Executive summary:
The test material was applied as submitted to the intact skin and covered with a "1 x 1" gauze patch held in place with saran wrap. At the end of 4 hours, the coverings were removed and the area examined for skin irritation and corrosion. Examinations were repeated at 24 and 48 hours and scored according to Draize 1965 The primary dermal irritation scores were 3.4, 6.3, and 7.0 at 4, 24, and 48 hours, respectively.
The test substance is considered corrosive to skin according to OECD GHS guidelines.
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