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EC number: 239-350-6 | CAS number: 15308-01-7
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Eye irritation
Administrative data
- Endpoint:
- eye irritation: in vivo
- Type of information:
- experimental study
- Adequacy of study:
- other information
- Study period:
- November 19 to 27, 1985
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: see 'Remark'
- Remarks:
- Well documented and reported study, conducted according to internationally accepted technical guideline in recognized industrial research organization. A quality assurance inspection report with reference to GLP, but not a GLP compliance statement, was included in the study report.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 1 986
- Report date:
- 1986
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- other: Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics" 1959, FOOD AND DRUG ADMINISTRATION, Association of Food and Drug Officials, U.S.A., Austin, Texas, 107 pp.
- Deviations:
- not specified
- Principles of method if other than guideline:
- Eye irritation was tested in 3 male and 3 female rabbits by topical administration of 10 mg unchanged test material onto the cornea of the left eye. In 3 of these rabbits both eyes were rinsed with physiological saline, approximately one minute after dosing. Eyes were examined for ocular lesions: prior to dosing and 1 and 6 hours as well as 1, 2, 3, 6 and 8 days after dosing.
- GLP compliance:
- no
- Remarks:
- but Quality Assurance statement with reference to IKS GLP guidance document was included in the report
Test material
- Reference substance name:
- 2-chloro-N-(2,6-dichlorophenyl)-N-phenylacetamide
- EC Number:
- 239-350-6
- EC Name:
- 2-chloro-N-(2,6-dichlorophenyl)-N-phenylacetamide
- Cas Number:
- 15308-01-7
- Molecular formula:
- C14H10Cl3NO
- IUPAC Name:
- 2-chloro-N-(2,6-dichlorophenyl)-N-phenylacetamide
- Details on test material:
- - Name of test material (as cited in study report): PBS 3248.3 (Voltachlorid)
- Description: beige crystalline powder
- Expiration date of the lot/batch: December 1986
- Storage conditions: room temperature
Analyzed by Pharmaceuticals Production: Test Article Data Sheet of September 30, 1985
Constituent 1
Test animals / tissue source
- Species:
- rabbit
- Strain:
- other: rabbit, Chbb:HM (SPF)
- Details on test animals or tissues and environmental conditions:
- - Animal supplier: Thomae, FRG
- Age: 5 - 7 months.
- Number and Sex: 3 males and 3 females
- Weight on day of treatment (before application): Minimum 1.86 kg, maximum 2.30 kg.
- Housing: Individual housing in metal cages.
- Diet (ad libitum): Commercially available pelleted standard diet (NAFAG No. 814, batch 83/85, analysed by the
manufacturer, NAFAG, Gossau, Switzerland).
- Water (ad libitum): Tap water. (Periodically analysed for compliance with Swiss drinking water specifications) - Acclimation period: Approximately 4 weeks under laboratory conditions.
ENVIRONMENTAL CONDITIONS
Air conditioned room:
- Temperature (°C): 18 ± 2°C
- Relative Humidity (%): 60 ± 10%
- Photoperiod: 14 hrs light/day
Test system
- Vehicle:
- unchanged (no vehicle)
- Controls:
- not required
- Amount / concentration applied:
- Single topical administration of 10 mg of unchanged test material onto the cornea of the left eye of 3 male and 3 female rabbits.
- Duration of treatment / exposure:
- In 3 of the 6 treated rabbits approximately 1 minute, as in these 3 animals both eyes were rinsed with physiological saline, approximately 1 minute after dosing. Eyes of the other three treated rabbits were not rinsed. Consequently, their treatment/exposure period was equivalent to the entire observation period following administration, which was 8 days, or lasted until removal of the test material by physiological mechanisms, whichever happened sooner.
- Observation period (in vivo):
- 8 days
- Number of animals or in vitro replicates:
- 6 rabbits (3 males and 3 females)
- Details on study design:
- Control animals were not required, as only one eye/animal was treated the other eye serving as a control. In three of the six treated animals both eyes were rinsed with physiological saline, approximately one minute after dosing.
Eyes were evaluated for ocular lesions [corneal opacity (degree of severity and area of cornea involved), iridic effects and effects on the conjunctiva (degree of redness, degree of chemosis and degree of discharge)] prior to dosing and 1 and 6 hours as well as 1, 2, 3, 6 and 8 days afterwards in all animals. Grading and numerical evaluation of ocular lesions are outlined in Tables 1 and 2.
Results and discussion
In vivo
Resultsopen allclose all
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- other: Corneal opacity was not evident
- Remarks on result:
- other: eyes not rinsed after dosing
- Irritation parameter:
- iris score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 2
- Reversibility:
- other: Iridal changes were not evident
- Remarks on result:
- other: eyes not rinsed after dosing
- Irritation parameter:
- conjunctivae score
- Remarks:
- (redness)
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0.11
- Max. score:
- 3
- Reversibility:
- fully reversible within: 2 days
- Remarks on result:
- other: eyes not rinsed after dosing
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- other: Chemosis was not evident
- Remarks on result:
- other: eyes not rinsed after dosing
- Irritation parameter:
- other: discharge score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 3
- Reversibility:
- fully reversible within: 1 day
- Remarks on result:
- other: eyes not rinsed after dosing
- Irritation parameter:
- cornea opacity score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- other: Corneal opacity was not evident
- Remarks on result:
- other: eyes rinsed ca. 1 minute after dosing
- Irritation parameter:
- iris score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 2
- Reversibility:
- other: Iridal changes were not evident
- Remarks on result:
- other: eyes rinsed ca. 1 minute after dosing
- Irritation parameter:
- conjunctivae score
- Remarks:
- (redness)
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0.11
- Max. score:
- 3
- Reversibility:
- fully reversible within: 2 days
- Remarks on result:
- other: eyes rinsed ca. 1 minute after dosing
- Irritation parameter:
- chemosis score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 4
- Reversibility:
- other: Chemosis was not evident
- Remarks on result:
- other: eyes rinsed ca. 1 minute after dosing
- Irritation parameter:
- other: discharge score
- Basis:
- mean
- Remarks:
- over 3 animals and 3 time points
- Time point:
- other: 1, 2, 3 day(s)
- Score:
- 0
- Max. score:
- 3
- Reversibility:
- other: Discharge was not evident
- Remarks on result:
- other: eyes rinsed ca. 1 minute after dosing
- Irritant / corrosive response data:
- Rinsed and unrinsed control eyes were unaffected in all animals. In addition, ocular lesions in any eyes prior to dosing were not reported. Corneal and iridic lesions and chemosis were not evident throughout the study.
Conjunctival redness, grade 2, was seen in one treated unrinsed eye at 1 hour post administration and was followed by grade 1 at 6 hours and 1 day in this animal. Grade 1 of this finding was also seen in one treated rinsed eye at 6 hours and 1 day post administration. By 2 days post dosing, this finding had completely disappeared. The other four animals (2 unrinsed and 2 rinsed) were free from conjunctival redness throughout the study. In addition, discharge, grade 2 at 1 hour and grade 1 at 6 hours post dosing, was recorded in the treated unrinsed eye showing conjunctival redness. A further treated unrinsed eye showed discharge grade 1 at 6 hours post dosing. Apart from these few occasions discharge was not seen during the study. As from two days post dosing until termination of the study, 8 days post dosing, all animals were entirely free from ocular lesions. - Other effects:
- There was no mortality. Signs of toxicity or relevant changes in body weight were not evident.
Applicant's summary and conclusion
- Interpretation of results:
- not irritating
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- PBS 3248.3 had only minimal irritation effects on the eye, when administered topically onto the cornea at a single dose of 10 mg. The irritation results attained do not necessitate any labelling regarding eye irritation according to EU classification rules [DIRECTIVE 67/548/EEC and REGULATION (EC) 1272/2008], provided the reduced dose of only 10 mg test material administered topically onto the cornea (instead of administering 100 mg of test material into the conjunctival sac) is acceptable.
- Executive summary:
PBS 3248.3 (Voltachlorid) was tested for eye irritation based on “Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics", 1959, FDA, Association of Food and Drug Officials, U.S.A., Austin, Texas, 107 pp.”
Reliability grade 1 was assigned to the study. It was not conducted in compliance with GLP, but a Quality Assurance statement with reference to an IKS GLP guidance document*was included in the study report.
Eye irritation was tested in 3 male and 3 female rabbits by topical administration of 10 mg unchanged test material onto the cornea of the left eye. In 3 of these rabbits, both eyes were rinsed with physiological saline approximately one minute after dosing. Eyes were examined for ocular lesions: prior to dosing and 1 and 6 hours, as well as 1, 2, 3, 6 and 8 days after dosing.
There was no mortality. Signs of toxicity or relevant changes in bodyweight were not evident.
Corneal and iridic lesions and chemosis were not evident during the study.Conjunctival redness, grade 2, was seen in one treated unrinsed eye at 1 hour post administration and was followed by grade 1 at 6 hours and 1 day in this animal. Grade 1 of this finding was also seen in one treated rinsed eye at 6 hours and 1 day post administration. In addition, discharge, grade 2 at 1 hour and grade 1 at 6 hours post dosing, was recorded in the treated unrinsed eye showing conjunctival redness. A further treated unrinsed eye showed discharge grade 1 at 6 hours post dosing. Apart from these few occasions, conjunctival redness or discharge were not seen during the study. As from two days post dosing until termination of the study, 8 days post dosing, all animals were entirely free from ocular lesions.
Based on FDA classification the author of the study report concluded that a single dose of 10 mg PBS 3248.3 administered topically onto the rabbit cornea caused minimal irritation. The primary eye irritation indices (derived from weighted ocular lesions at 6 hours, 1 day and 3 days post dosing) in treated unrinsed and treated rinsed eyes were 0.9 and 0.5, respectively, indicating a little, but assessable, improvement induced by the rinsing with physiological saline. Rinsed and unrinsed control eyes remained unaffected.
The minor incidence and degree of eye irritation induced by PBS 3248.3 does not necessitate any labelling regarding eye irritation according to EU classification rules (DIRECTIVE 67/548/EEC and REGULATION (EC) 1272/2008), provided the reduced dose of only 10 mg test material administered topically onto the cornea (instead of administering 100 mg of test material into the conjunctival sac) is acceptable.
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*"Wegleitung der IKS betreffend gute Laboratoriumspraxis für nichtklinische Laborversuche, Unterabschnitt B.4.a.v."
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