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Toxicological information

Eye irritation

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Administrative data

Endpoint:
eye irritation: in vivo
Type of information:
experimental study
Adequacy of study:
key study
Study period:
01-Dec-2008 - 16-Feb-2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: GLP and guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2009
Report date:
2009

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
OECD Guideline 405 (Acute Eye Irritation / Corrosion)
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Remarks:
Bayerisches Landesamt für Gesundheit und Lebensmittelsicherheit, Landesinstitut für Arbeitsschutz und Produktsicherheit

Test material

Constituent 1
Chemical structure
Reference substance name:
Mercaptoacetic acid, monoester with propane-1,2,3-triol
EC Number:
250-264-8
EC Name:
Mercaptoacetic acid, monoester with propane-1,2,3-triol
Cas Number:
30618-84-9
Molecular formula:
C5H10O4S
IUPAC Name:
1,3-dihydroxypropan-2-yl 2-sulfanylacetate; 2,3-dihydroxypropyl 2-sulfanylacetate
Test material form:
solid - liquid: suspension
Details on test material:
- Name of test material (as cited in study report): Glyceryl Thioglycolate 80 %
- Analytical purity: 80.54% (iodometric based on mercapto group, calculated for Glyceryl monothioglycolate)

Test animals / tissue source

Species:
rabbit
Strain:
New Zealand White
Details on test animals or tissues and environmental conditions:
TEST ANIMALS
- Only females
- Source: Charles River Deutschland, D-88353 Kisslegg
- Age at study initiation: No data
- Weight at study initiation: 4.1, 4.7, 5.1 kg
- Housing: ABS - plastic rabbit cages, floor 4200 cm^2, Semi-barrier in an air conditioned room
- Diet: Ad libitum
- Water: Ad libitum
- Acclimation period: At least 5 days


ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18 ± 3 °C
- Humidity (%): 55 ± 10 % relative humidity
- Air changes (per hr): 10 x / h
- Photoperiod (hrs dark / hrs light): 12 /12


Test system

Vehicle:
unchanged (no vehicle)
Controls:
no
Amount / concentration applied:
0.1 mL of unchanged test article
Duration of treatment / exposure:
- single dose application
- not rinsed
Observation period (in vivo):
- animal 1 was observed for 8 days after dosing
- animal 2 and 3 were observed for 7 days after dosing
- for calculation only the 24 h, 48 h and 72 h readings were used
Number of animals or in vitro replicates:
3
Details on study design:
REMOVAL OF TEST SUBSTANCE
- Washing: No

SCORING SYSTEM: Draize

TOOL USED TO ASSESS SCORE: Fluorescein solution (Fluoreszein SE Thilo®, Lot H 801, expiry date: January 2010)

Results and discussion

In vivo

Resultsopen allclose all
Irritation parameter:
cornea opacity score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
cornea opacity score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
cornea opacity score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0
Max. score:
4
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
iris score
Basis:
animal #1
Time point:
24/48/72 h
Score:
0
Max. score:
2
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
iris score
Basis:
animal #2
Time point:
24/48/72 h
Score:
0.33
Max. score:
2
Reversibility:
fully reversible within: 8 days
Irritation parameter:
iris score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0
Max. score:
2
Reversibility:
not specified
Remarks on result:
no indication of irritation
Irritation parameter:
conjunctivae score
Basis:
animal #1
Time point:
24/48/72 h
Score:
1.33
Max. score:
3
Reversibility:
fully reversible within: 8 days
Irritation parameter:
conjunctivae score
Basis:
animal #2
Time point:
24/48/72 h
Score:
1.67
Max. score:
3
Reversibility:
fully reversible within: 8 days
Irritation parameter:
conjunctivae score
Basis:
animal #3
Time point:
24/48/72 h
Score:
1.33
Max. score:
3
Reversibility:
fully reversible within: 8 days
Irritation parameter:
chemosis score
Basis:
animal #1
Time point:
24/48/72 h
Score:
1.33
Max. score:
4
Reversibility:
fully reversible within: 8 days
Irritation parameter:
chemosis score
Basis:
animal #2
Time point:
24/48/72 h
Score:
1.33
Max. score:
4
Reversibility:
fully reversible within: 8 days
Irritation parameter:
chemosis score
Basis:
animal #3
Time point:
24/48/72 h
Score:
0.67
Max. score:
4
Reversibility:
fully reversible within: 8 days
Irritant / corrosive response data:
Test item produced irritating effects which were fully reversible in all three animals within 8 days post instillation.
Other effects:
Neither mortalities nor significant clinical signs of toxicity were observed.

Applicant's summary and conclusion

Interpretation of results:
slightly irritating
Remarks:
Migrated information Criteria used for interpretation of results: EU
Conclusions:
The test substance GMT (SH content of 80.5%) was considered as slightly irritating when administered by the ocular route in rabbits. GMT (SH content of 80.5%) does not have to be classified according to GHS.