Trichlorotrifluoroethane

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vitro / ex vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

Protocol signed: 2010-09-03, experimental start date: 2010-09-08, experimental termination date: 2010-09-13

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP compliant, guideline study, no restrictions, fully adequate for assessment

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2010

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: B46 of Council Regulation (EC) No 761/2009

Deviations:

no

Principles of method if other than guideline:

Not applicable

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Trichlorotrifluoroethane

EC Number:

206-564-6

EC Name:

Trichlorotrifluoroethane

Cas Number:

354-58-5

Molecular formula:

C2Cl3F3

IUPAC Name:

1,1,1-trichloro-2,2,2-trifluoroethane

Constituent 2

Reference substance name:

1, 1, 1-trichloro-2,2,2-trifluoroethane

IUPAC Name:

1, 1, 1-trichloro-2,2,2-trifluoroethane

Details on test material:

- Physical state: Colourless liquid

Test animals

Species:

other: In vitro using EpiSkin inserts (3-dimensional human skin model, comprising a reconstructed epidermis with a functional stratum corneum, supplied by SkinEthic Laboratories, Nice, France)

Strain:

other: Not applicable

Test system

Type of coverage:

other: Not applicable

Preparation of test site:

other: Not applicable

Vehicle:

unchanged (no vehicle)

Controls:

other: Not applicable

Amount / concentration applied:

40 µL

Duration of treatment / exposure:

15 minutes

Observation period:

Not applicable

Number of animals:

Not applicable

Results and discussion

In vitro

Results

Irritation / corrosion parameter:

other: other: viability of tissues

Value:

87.2

Remarks on result:

other:

Remarks:

Time point: 15 mins treatment. (migrated information)

Any other information on results incl. tables

Based on the cell viability measurements obtained, the following mean viability measurements for the test article, negative control and positive control were calculated to be: 87.2%, 100% and 7.2% respectively.

 

These results indicate the viability of the epidermal tissue was not reduced to below 50% of the negative control and therefore may be considered to be non-irritant. The positive control showed an appropriate response in the assay system.

 

No other test substance related effects were observed.

Applicant's summary and conclusion

Interpretation of results:

not irritating

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

The test substance was not irritant to the in vitro skin model EpiSkin.

Executive summary:

In order to assess the in vitro skin irritation potential of 1,1,1-trichloro-2,2,2-trifluoroethane, EpiSkin inserts were treated with the test substance, negative control (phosphate buffered saline (PBS)) and positive control (5% v/v sodium dodecyl sulphate (SDS)) for 15 minutes. At the end of the treatment period, the tissues were washed with PBS and cell viability was assessed using the MTT (3-(4, 5-Dimethylthiazol-2-yl) -2, 5-diphenyltetrazolium bromide, also known as Thiazolyl blue) interacting substances assay. The skin irritation potential was classified according to the remaining cell viability obtained after test article treatment.

 

The group mean viability for the test article was 87.2%, for the negative control was 100% and for the positive control was 7.2%.

 

The test substance was not irritant to the in vitro skin model EpiSkin.