2-ethylhexanoyl chloride

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: The study was performed and documented in a robust manner (adopted from OECD SIDS; however, results are not reported in sufficient detail for classification)

Data source

Reference

Reference 1

Reference Type:

secondary source

Title:

Unnamed

Year:

1986

Report date:

1986

Reference 2

Reference Type:

publication

Title:

No information

Author:

PPG Ind. Inc.

Year:

1987

Bibliographic source:

TSCATS, OTS 0513463, Doc. I.D. 89-878000001

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

OECD Guideline 404 (Acute Dermal Irritation / Corrosion)

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

2-ethylhexanoyl chloride

EC Number:

212-081-1

EC Name:

2-ethylhexanoyl chloride

Cas Number:

760-67-8

Molecular formula:

C8H15ClO

IUPAC Name:

2-ethylhexanoyl chloride

Details on test material:

Purity of test material was not analytically confirmed. It was used as received from PPG Industries. Purity of that material is listed as > 98% on the MSDS.

Test animals

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

Three female and three male New Zealand White rabbits were used.

Test system

Type of coverage:

semiocclusive

Preparation of test site:

other: clipped

Vehicle:

unchanged (no vehicle)

Controls:

no

Amount / concentration applied:

Undiluted test material (0.5 ml) was placed on clipped skin under a gauze patch. Each patch was secured with a strip of non-irritating adhesive tape and the entire trunk of the animal was wrapped with a semi-permeable dressing. The dressings were removed 4 hours later and the skin was gently wiped with a moist cloth to remove as much residual material as possible.

Duration of treatment / exposure:

4 h

Observation period:

21 d

Number of animals:

6

Details on study design:

The animals were scored for erythema and eschar formation, edema formation and any other dermal effects or irritation at 1, 24, 48, and 72 hours and 4, 7, 10, 14, 17 and 21 days after removal of the dressings. The maximum score for each endpoint was 4 for each observation. All of the erythema and edema scores for each observation point were added together, and the sum was divided by the number of animals observed to determine an irritation score. The maximum irritation score was selected from the observation time yielding the highest irritation score.

Results and discussion

In vivo

Results

Irritation parameter:

primary dermal irritation index (PDII)

Basis:

mean

Time point:

other: day 7

Score:

6.8

Max. score:

8

Reversibility:

not reversible

Remarks on result:

other: unspecified necrosis was observed in all animals at the end of the observation period. Only the time point with the highest mean score was reported.

Any other information on results incl. tables

Erythema and edema were present at each observation time through Day 21. The maximum irritation score of 6.8/8.0 was obtained at the Day 7 observation time. This score is consistent with a rating of "severe irritant". However, since necrosis was present on the test sites of all the animals, the test material was given a descriptive rating of "corrosive".
One male animal was found dead on Day 16 of the study. The cause of death was not mentioned.