Hatcol 1760

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

The study was performed between 28 May 2008 and 31 May 2008.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Study conducted in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not affect the quality of relevant results.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Report date:

2008

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Remarks:

UK GLP standards (Schedule 1, Good Laboratory Practice Regulations 1999 (SI 1999/3106 as amended by SI 2004/0994)). Date of inspection: 21/08/2007. Date of signature: 19/06/2008.

Test material

Test material information

Constituent 1

Details on test material:

Sponsor's identification :Hatcol 1760
Description : clear colourless slightly viscous liquid
Date received : 04 February 2008
Storage conditions :room temperature in the dark

Test animals

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Harlan UK Limited, Bicester, Oxon, UK.
- Age at study initiation: twelve to twenty weeks old.
- Weight at study initiation: 2.0 to 3.5 kg
- Housing: The animals were individually housed in suspended cages.
- Diet: Certified Rabbit Diet - ad libitum
- Water: ad libitum
- Acclimation period: at least five days


ENVIRONMENTAL CONDITIONS
- Temperature (°C): 17 to 23°C
- Humidity (%): 30 to 70%
- Air changes (per hr): at least fifteen changes per hour
- Photoperiod (hrs dark / hrs light): lighting was controlled by a time switch to give twelve hours continuous light (06:00 to 18:00) and twelve hours darkness.


IN-LIFE DATES: From: Day 0 To: 72 hours

Test system

Type of coverage:

semiocclusive

Preparation of test site:

shaved

Vehicle:

unchanged (no vehicle)

Controls:

no

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit):0.5 ml per test site
- Concentration (if solution): not applicable


VEHICLE
- Amount(s) applied (volume or weight with unit): not applicable
- Concentration (if solution): not applicable
- Lot/batch no. (if required): not applicable
- Purity: not applicable

Duration of treatment / exposure:

4 hours

Observation period:

72 hours

Number of animals:

3

Details on study design:

TEST SITE
- Area of exposure: 2.5 cm x 2.5 cm on each rabbit
- % coverage: 100% coverage under patch
- Type of wrap if used: cotton gauze patch secured in position with a strip of surgical adhesive tape.


REMOVAL OF TEST SUBSTANCE
- Washing (if done): distilled water
- Time after start of exposure: 4 hours


SCORING SYSTEM: Draize J H (1959) "Dermal Toxicity" In: Appraisal of the Safety of Chemicals in Foods, Drugs and Cosmetics. Association of Food and Drug Officials of the United States, Austin, Texas, p.46 59

CLASSIFICATION SYSTEM: EU

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

erythema score

Basis:

animal: 67544 Male

Time point:

other: Mean of 24, 48 and 72 hours

Score:

0

Max. score:

4

Reversibility:

other: no effects observed

Results 2

Irritation parameter:

erythema score

Basis:

animal: 67545 Male

Time point:

other: Mean of 24, 48 and 72 hours

Score:

0

Max. score:

4

Reversibility:

other: no effects observed

Results 3

Irritation parameter:

erythema score

Basis:

animal: 67546 Male

Time point:

other: Mean of 254, 48 and 72 hours

Score:

0

Max. score:

4

Reversibility:

other: no effects observed

Results 4

Irritation parameter:

edema score

Basis:

animal: 67544 Male

Time point:

other: Mean of 24, 48 and 72 hours

Score:

0

Max. score:

4

Reversibility:

other: no effects observed

Results 5

Irritation parameter:

edema score

Basis:

animal: 67545 Male

Time point:

other: Mean of 24, 48 and 72 hours

Score:

0

Max. score:

4

Reversibility:

other: no effects observed

Results 6

Irritation parameter:

edema score

Basis:

animal: 67546 Male

Time point:

other: Mean of 24, 48 and 72 hours

Score:

0

Max. score:

4

Reversibility:

other: no effects observed

Irritant / corrosive response data:

No evidence of skin irritation was noted during the study.

No corrosive effects were noted.

Other effects:

None described.

Any other information on results incl. tables

No evidence of skin irritation was noted during the study.

Applicant's summary and conclusion

Interpretation of results:

not irritating

Remarks:

Migrated information to the skin of rabbit Criteria used for interpretation of results: EU

Conclusions:

The test material did not meet the criteria for classification as irritant or corrosive according to EU or GHS labelling regulations. No symbol or risk phrase are required.

Executive summary:

Introduction. The study was performed to assess the irritancy potential of the test material to the skin of the New Zealand White rabbit. The method was designed to meet the requirements of the following:

§        OECD Guidelines for the Testing of Chemicals No. 404 “Acute Dermal Irritation/Corrosion” (adopted)

§        Method B4 Acute Toxicity (Skin Irritation) of Commission Directive 2004/73/EC

Results. A single 4-hour, semi-occluded application of the test material to the intact skin of three rabbits produced no evidence of skin irritation.

Conclusion.  The test material did not meet the criteria for classification as irritant or corrosive according to EU (99/45EEC) or GHS labelling regulations. No symbol or risk phrase are required.