Bis(hydroxyethyl)methyloleylammonium chloride

Skin irritation / corrosion

Administrative data

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

2011

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: GLP Guideline Study

Justification for type of information:

Read-across data is presented from quaternary ammonium compounds, C12-18-alkylbis(hydroxyethyl)methyl, chlorides, CAS Number 71808-53-2, EC Number 276-038-9. This substance is considered to be close enough in structural integrity to the target substance, bis(2 -hydroxyethyl)oleylmethylammonium chloride, CAS Number 18448 -65 -2, EC Number 242 -332 -0, so as to justify valid read-across.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2011

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

Test guideline 3

Qualifier:

according to guideline

Guideline:

EPA OPPTS 870.2500 (Acute Dermal Irritation)

Deviations:

no

GLP compliance:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Quaternary ammonium compounds, C12-18-alkylbis(hydroxyethyl)methyl, chlorides

EC Number:

276-038-9

EC Name:

Quaternary ammonium compounds, C12-18-alkylbis(hydroxyethyl)methyl, chlorides

Cas Number:

71808-53-2

IUPAC Name:

Quaternary ammonium compounds, C12-18-alkylbis(hydroxyethyl)methyl, chlorides

Test material form:

liquid

Specific details on test material used for the study:

Name: C12-18-alkylbis(hydroxyethyl)methyl, chloride (77% in isopropyl alcohol)
CAS No.: 71808-53-2 (old CAS No. 70750-47-9)
Chemical Name: C12-18-alkylbis(hydroxyethyl)methyl, chloride
Batch No.: S001314
Physical state at RT: liquid
Colour: amber
Active Components: 77.3%
Storage: at room temperature
Expiry Date: 28.04.2018

Test animals

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

- Semi barrier in an air-conditioned room
- Temperature: 18 +/- 3 °C (recommendations of TVT, GV-SOLAS)
- Relative humidity: 55 +/- 10%
- Artificial light, sequence being 12 hours light, 12 hours dark
- Air change: at least 10 x / hour
- Free access to autoclaved hay and to Altromin 2123 maintenance diet for rabbits (lot no. 0700), rich in crude fibre
- Free access to tap water (drinking water, municipal residue control, microbiological controls at regular intervals)
- Certificates of food, water and bedding are filed at BSL BIOSERVICE
- Housed in ABS - plastic rabbit cages, floor 4200 cm2
- Adequate acclimatisation period (at least 5 days) under laboratory conditions

Test system

Type of coverage:

semiocclusive

Preparation of test site:

shaved

Vehicle:

unchanged (no vehicle)

Controls:

not required

Amount / concentration applied:

0.5 ml

Duration of treatment / exposure:

As the test item was suspected to be corrosive, three patches were applied to one animal. The exposure periods were 3 min, 1 hour and 4 hours.
At the end of the exposure period, the residual test item was removed with tap water.

Observation period:

14 days after the patch removal

Number of animals:

1

Results and discussion

In vivo

Results

Results 1

Irritation parameter:

erythema score

Basis:

animal #1

Time point:

48 h

Score:

2

Remarks on result:

other: 3 min exposure - 24h to 48h

Results 2

Irritation parameter:

edema score

Basis:

animal #1

Time point:

48 h

Score:

1

Remarks on result:

other: 3 min exposure - 24h to 48h

Results 3

Irritation parameter:

erythema score

Basis:

animal #1

Time point:

24/48/72 h

Score:

3

Remarks on result:

other: 1h exposure - 24h to 72h

Results 4

Irritation parameter:

edema score

Basis:

animal #1

Time point:

24/48/72 h

Score:

2

Remarks on result:

other: 1h exposure - 24h to 72h

Results 5

Irritation parameter:

erythema score

Basis:

animal #1

Time point:

24/48/72 h

Score:

4

Remarks on result:

other: 4h exposure - 24h to 72h

Results 6

Irritation parameter:

edema score

Basis:

animal #1

Time point:

24/48/72 h

Score:

2

Remarks on result:

other: 4h exposure - 24h to 72h

Irritant / corrosive response data:

Initial test in animal no. 1: The examination of the test site immediately after the patch removal revealed erythema grade 1 and oedema grade 1 for the 3 min exposure, erythema grade 1 and oedema grade 2 for the 1 hour exposure and erythema grade 2 and oedema grade 3 for the 4 hour exposure.
The subsequent clinical observations showed irritant effects for the 3 min exposure and corrosive effects for the 1 hour and 4 hours exposure, which were not reversible within the observation period of 14 days.
Irritant effects were observed on the intact skin of one female rabbit (strain NZW) after a contact time of 3 min (Tables), corrosive effects were observed on the intact skin of one female rabbit after a contact time of 1 hour and 4 hours. These signs of irritation / corrosion were not reversible within the observation period of 14 days.

Any other information on results incl. tables

Dermal Irritation Evaluation

Exposure Time	Application Site	Irritation (hours after patch removal)
		1 hour		24 hours		48 hours		72 hours
		T	C	T	C	T	C	T	C
3 min	Erythema	1	0	2	0	2	0	2	0
	Oedema	1	0	1	0	1	0	1	0
1 hour	Erythema	1	0	3	0	3	0	3	0
	Oedema	2	0	2	0	2	0	2	0
4 hours	Erythema	3	0	4	0	4	0	4	0
	Oedema	3	0	2	0	2	0	2	0

Exposure Time	Application Site	Irritation (days after patch removal)
		4 days		5 days		6 days		7 days
		T	C	T	C	T	C	T	C
3 min	Erythema	2	0	2	0	2	0	1	0
	Oedema	1	0	1	0	0	0	0	0
1 hour	Erythema	3	0	3	0	3	0	2	0
	Oedema	2	0	2	0	0	0	0	0
4 hours	Erythema	4	0	4	0	4	0	4	0
	Oedema	2	0	2	0	0	0	0	0

Exposure Time	Application Site	Irritation (days after patch removal)
		8 days		9 days		10 days		11 days
		T	C	T	C	T	C	T	C
3 min	Erythema	1	0	1	0	0	0	0	0
	Oedema	0	0	0	0	0	0	0	0
1 hour	Erythema	2	0	2	0	1	0	1	0
	Oedema	0	0	0	0	0	0	0	0
4 hours	Erythema	4	0	4	0	4	0	3	0
	Oedema	0	0	0	0	0	0	0	0

Exposure Time	Application Site	Irritation (days after patch removal)
		12 days		13 days		14 days
		T	C	T	C	T	C
3 min	Erythema	1	0	1	0	0	0
	Oedema	0	0	0	0	0	0
1 hour	Erythema	2	0	2	0	1	0
	Oedema	0	0	0	0	0	0
4 hours	Erythema	4	0	4	0	4	0
	Oedema	0	0	0	0	0	0

Other findings:

Individual Systemic and Local Findings – 3 min exposure
Time after Patch Removal	Systemic Findings	Specific Local Findings (apart from erythema/oedema)	Comments
1 hour	nsf	nsf	-
24 hours	nsf	nsf	-
48 hours	nsf	nsf	-
72 hours	nsf	nsf	-
4 days	nsf	eschar, superficial cleft	-
5 days	nsf	eschar, superficial cleft	-
6 days	nsf	eschar, superficial cleft	-
7 days	nsf	eschar, desquamation	-
8 days	nsf	eschar, desquamation	-
9 days	nsf	eschar, desquamation	-
10 days	nsf	eschar, desquamation	-
11 days	nsf	eschar, desquamation	-
12 days	nsf	eschar, desquamation	-
13 days	nsf	dequamation	-
14 days	nsf	dequamation	-

Individual Systemic and Local Findings – 1 hour exposure
Time after Patch Removal	Systemic Findings	Specific Local Findings (apart from erythema/oedema)	Comments
1 hour	nsf	nsf	-
24 hours	nsf	eschar	-
48 hours	nsf	eschar	-
72 hours	nsf	eschar	-
4 days	nsf	eschar, cleft	-
5 days	nsf	eschar, cleft	-
6 days	nsf	eschar, cleft	-
7 days	nsf	eschar, desquamation	-
8 days	nsf	eschar, desquamation	-
9 days	nsf	eschar, desquamation	-
10 days	nsf	eschar, desquamation	-
11 days	nsf	eschar, desquamation	-
12 days	nsf	eschar, desquamation	-
13 days	nsf	eschar, desquamation	-
14 days	nsf	eschar, desquamation	-

Individual Systemic and Local Findings – 4 hours exposure
Time after Patch Removal	Systemic Findings	Specific Local Findings (apart from erythema/oedema)	Comments
1 hour	nsf	nsf	-
24 hours	nsf	eschar	-
48 hours	nsf	eschar	-
72 hours	nsf	eschar	-
4 days	nsf	eschar	-
5 days	nsf	eschar	-
6 days	nsf	eschar	-
7 days	nsf	eschar	-
8 days	nsf	eschar	-
9 days	nsf	eschar	-
10 days	nsf	eschar	-
11 days	nsf	eschar	-
12 days	nsf	eschar	-
13 days	nsf	eschar	-
14 days	nsf	eschar	-

Body Weight Develompent:

	Animal No. 1
Start of Study (weight in kg)	2.5
72 Hours after Application (weight in kg)	2.4
End of Study (weight in kg)	2.7

Applicant's summary and conclusion

Interpretation of results:

Category 1B (corrosive) based on GHS criteria

Conclusions:

Under the conditions of the present study, the single dermal application of the test item C12-18-alkylbis(hydroxyethyl)methyl, chloride (77% in isopropyl alcohol) to one rabbit at a dose of 0.5 g for 3 min exposure showed irritant effects, for 1 hour and 4 hours exposure showed corrosive effects which were not fully reversible within the observation period.

Executive summary:

The skin irritation / corrosion potential of the test substance, Quaternary ammonium compounds, C12-18-alkylbis(hydroxyethyl)methyl, chlorides, CAS Number 71808 -53 -2, EC Number 276 -038 -9, was investigated in a study conducted according to OECD Guideline 404 (Acute Dermal Irritation / Corrosion) / EU Method B.4 (Acute Toxicity: Dermal Irritation / Corrosion) / EPA OPPTS 870.2500 (Acute Dermal Irritation).

This substance is considered to be close enough in structural integrity to the target substance, bis(2 -hydroxyethyl)oleylmethylammonium chloride, CAS Number 18448 -65 -2, EC Number 242 -332 -0, so as to justify valid read-across.

The study was assigned a reliability score of 1 in accordance with the criteria for assessing data quality set forth by Klimisch et al. (1997).

Under the conditions of the present study, the single dermal application of the test item C12-18-alkylbis(hydroxyethyl)methyl, chloride (77% in isopropyl alcohol) to one rabbit at a dose of 0.5 g for 3 min exposure showed irritant effects, for 1 hour and 4 hours exposure showed corrosive effects which were not fully reversible within the observation period.