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Diss Factsheets

Toxicological information

Eye irritation

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Administrative data

Endpoint:
eye irritation: in vitro / ex vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19 May 2016 - 02 June 2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Cross-referenceopen allclose all
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2016

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 492 (Reconstructed Human Cornea-like Epithelium (RhCE) Test Method for Identifying Chemicals Not Requiring Classification and Labelling for Eye Irritation or Serious Eye Damage)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Chemical structure
Reference substance name:
(R)-p-mentha-1,8-diene
EC Number:
227-813-5
EC Name:
(R)-p-mentha-1,8-diene
Cas Number:
5989-27-5
Molecular formula:
C10H16
IUPAC Name:
(4R)-isopropenyl-1-methylcyclohexene
Constituent 2
Chemical structure
Reference substance name:
(S)-p-mentha-1,8-diene
EC Number:
227-815-6
EC Name:
(S)-p-mentha-1,8-diene
Cas Number:
5989-54-8
Molecular formula:
C10H16
IUPAC Name:
(4S)-isopropenyl-1-methylcyclohexene
Constituent 3
Chemical structure
Reference substance name:
p-mentha-1,3-diene
EC Number:
202-795-1
EC Name:
p-mentha-1,3-diene
Cas Number:
99-86-5
Molecular formula:
C10H16
IUPAC Name:
1-isopropyl-4-methylcyclohexa-1,3-diene
Constituent 4
Chemical structure
Reference substance name:
p-mentha-1,4(8)-diene
EC Number:
209-578-0
EC Name:
p-mentha-1,4(8)-diene
Cas Number:
586-62-9
Molecular formula:
C10H16
IUPAC Name:
4-isopropylidene-1-methylcyclohexene
Constituent 5
Chemical structure
Reference substance name:
p-mentha-1,4-diene
EC Number:
202-794-6
EC Name:
p-mentha-1,4-diene
Cas Number:
99-85-4
Molecular formula:
C10H16
IUPAC Name:
1-isopropyl-4-methylcyclohexa-1,4-diene
impurity 1
Chemical structure
Reference substance name:
(3R)-isopropylidene-6-methylcyclohexene
Cas Number:
43124-56-7
Molecular formula:
C10H16
IUPAC Name:
(3R)-isopropylidene-6-methylcyclohexene
impurity 2
Chemical structure
Reference substance name:
(3S)-isopropylidene-6-methylcyclohexene
Cas Number:
62504-16-9
Molecular formula:
C10H16
IUPAC Name:
(3S)-isopropylidene-6-methylcyclohexene
impurity 3
Chemical structure
Reference substance name:
p-cymene
EC Number:
202-796-7
EC Name:
p-cymene
Cas Number:
99-87-6
Molecular formula:
C10H14
IUPAC Name:
1-isopropyl-4-methylbenzene
impurity 4
Chemical structure
Reference substance name:
(1R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
EC Number:
227-336-2
EC Name:
(1R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
Cas Number:
5794-03-6
Molecular formula:
C10H16
IUPAC Name:
(1R,4S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
impurity 5
Chemical structure
Reference substance name:
(1S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
EC Number:
227-337-8
EC Name:
(1S)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
Cas Number:
5794-04-7
Molecular formula:
C10H16
IUPAC Name:
(1S,4R)-2,2-dimethyl-3-methylenebicyclo[2.2.1]heptane
impurity 6
Chemical structure
Reference substance name:
(5S)-isopropyl-2-methylcyclohexa-1,3-diene
Cas Number:
2243-33-6
Molecular formula:
C10H16
IUPAC Name:
(5S)-isopropyl-2-methylcyclohexa-1,3-diene
impurity 7
Chemical structure
Reference substance name:
(R)-5-isopropyl-2-methylcyclohexa-1,3-diene
EC Number:
224-167-6
EC Name:
(R)-5-isopropyl-2-methylcyclohexa-1,3-diene
Cas Number:
4221-98-1
Molecular formula:
C10H16
IUPAC Name:
(5R)-isopropyl-2-methylcyclohexa-1,3-diene
Test material form:
liquid
Details on test material:
Batch No. 122735
Purity: 83.7% (sum of the 5 main constituents)
Name of the test item (as cited in the study report): REACTION MASS OF DL-LIMONENE, ALPHA- GAMMA- TERPINENES, TERPINOLENE
Physical state: colourless-slightly yellow liquid
Storage condition of test material: +2°C to +8°C, under nitrogen and protected from light
Expiry date: 05 December 2012

Test animals / tissue source

Species:
other: reconstructed human Cornea-like Epithelium
Strain:
other: reconstructed human Cornea-like Epithelium
Details on test animals or tissues and environmental conditions:
EpiOcularTM OCL-212-ver2.0, supplied by MatTek Corporation

Test system

Vehicle:
unchanged (no vehicle)
Controls:
yes, concurrent positive control
yes, concurrent negative control
Amount / concentration applied:
The test item was applied, as supplied, at the dose of 50 µL
Duration of treatment / exposure:
30 minutes
Duration of post- treatment incubation (in vitro):
A 12-minute post exposure immersion period at room temperature and 1 hour and 58 minures post exposure incubation at standard culture conditions.
Number of animals or in vitro replicates:
2 replicates

Results and discussion

In vitro

Results
Irritation parameter:
other: mean percent tissue viability
Value:
76.69
Vehicle controls validity:
not applicable
Negative controls validity:
valid
Positive controls validity:
valid
Remarks:
percent tissue viability =34.89%

In vivo

Irritant / corrosive response data:
REACTION MASS OF DL-LIMONENE, ALPHA-GAMMA-TERPINENES, TERPINOLENE IS CONSIDERED AS NON IRRITANT AND NON CORROSIVE.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
In accordance with Regulation EC No. 1272/2008, test item REACTION MASS OF DL-LIMONENE, ALPHA- GAMMA-TERPINENES, TERPINOLENE does not require classification for eye irritation or serious eye damage. No hazard statement and signal word are required.
Executive summary:

The aim of the study was to evaluate the eye hazard potential of test item REACTION MASS OF DL-LIMONENE, ALPHA- GAMMA-TERPINENES, TERPINOLENE after topical administration on in vitro reconstructed human cornea-like epithelium tissues (EpiOcularTMtissue model).

 

Test item REACTION MASS OF DL-LIMONENE, ALPHA- GAMMA-TERPINENES, TERPINOLENE was applied, as supplied, at the dose of 50 µL, to 2 PBS pre-treated RhCE (EpiOcularTMtissue model) during 30 minutes at 37°C, 5% CO2, 95% humidity (standard culture conditions). The exposure period was followed by extensive rinsing with PBS at room temperature, a 12 minutes post-exposure immersion period at room temperature and a 1 -hour and 56 -minute post-exposure incubation at standard culture conditions. The tissue viability was measured by performing a MTT assay. The experimental protocol was established in accordance with OECD Guideline No. 492 adopted 28 July 2015.

 

The mean percent tissue viability of the RhCE replicates treated with test item REACTION MASS OF DL-LIMONENE, ALPHA- GAMMA-TERPINENES, TERPINOLENE was 76.69%, versus 34.89% in the positive control (Methyl acetate).

 

Therefore, in accordance with Regulation EC No. 1272/2008, test item REACTION MASS OF DL-LIMONENE, ALPHA- GAMMA-TERPINENES, TERPINOLENE does not require classification for eye irritation or serious eye damage. No hazard statement and signal word are required.