Tetramethylene dimethacrylate

Endpoint summary

Description of key information

Skin irritation: not irritating;  US FHSA Federal regulation: 16 CFR 1500.41; pre-GLP
Eye irritation: not irritating; US FHSA Federal regulation: 16 CFR 1500.42; pre-GLP

Key value for chemical safety assessment

Skin irritation / corrosion

Link to relevant study records

Reference

Endpoint:

skin irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1977

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods

Remarks:

Study performed before implementation of GLP.

Qualifier:

according to guideline

Guideline:

other: Appraisal of the safety of chemicals in foods, druge and cosmetics, by the Staft of the Division of Pharmacology, US FDA, skin toxicity according to Draize (1959)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

other: US FHSA Federal regulation: 16 CFR 1500.41

Deviations:

no

GLP compliance:

no

Remarks:

study performed before implementation of GLP

Specific details on test material used for the study:

- Name of test material (as cited in study report): 1,4-Butandioldimethacrylat

Species:

rabbit

Strain:

New Zealand White

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: no data
- Age at study initiation: no data
- Weight at study initiation: mean 2.5 kg
- Housing: individually
- Diet (e.g. ad libitum): rabbit standard diet, ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: no data

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20 ± 1°C
- Humidity (%): 50-60%
- Air changes (per hr): no data
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: no data

Type of coverage:

occlusive

Preparation of test site:

other: one site shaved/intact + one site shaved/abraded

Vehicle:

unchanged (no vehicle)

Controls:

other: untreated sites (one intact, one abraded) on each animal served as negative control

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.5 mL
- Concentration (if solution): used as suppplied

Duration of treatment / exposure:

24 h

Observation period:

72 h

Number of animals:

6

Details on study design:

TEST SITE
- The test material was applied to two clipped areas on each of six animals, one abraded and one left intact.
- Area of exposure: 2.5 x 2.5 cm
- Coverage ad wrap: Test sites were covered with medical strips which were fixed by leucoplast stripes. Whole animal trunk was wrapped in rubberized impervious cloth to minimize evaporation of the test substance. The animals were immobilized for the 24 hour exposure period.

REMOVAL OF TEST SUBSTANCE
- Washing (if done): no data

SCORING SYSTEM: erythema/eschar and edema scoring similar to OECD guideline 404

Irritation parameter:

erythema score

Basis:

animal: #1, #2, #3, #4, #5, #6

Remarks:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

4

Remarks on result:

other: intact and abraded skin, no scoring at 48 h

Irritation parameter:

edema score

Basis:

animal: #1, #2, #3, #4, #5, #6

Remarks:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

4

Remarks on result:

other: intact and abraded skin, no scoring at 48 h

Irritant / corrosive response data:

Intact skin:
All animals showed no reactions at all.

Abraded skin:
All animals showed no reactions at all.

Other effects:

No other effects were observed.

Interpretation of results:

GHS criteria not met

Conclusions:

In this primary dermal irritation study in rabbit, 1,4-BDDMA is not a dermal irritant.

Executive summary:

In a primary dermal irritation study similar to US FHSA Federal regulation: 16 CFR 1500.41, 6 rabbits were dermally exposed to 0.5 mL of 1,4 -BDDMA to approximately 2.5 cm² skin area. Two application sites per animal were treated, one site was left intact, the other was abraded. Test sites were covered with an occlusive dressing for 24 hours. Animals were observed for 72 hours. Irritation was scored similar to FHSA Federal guideline 16 CFR 1500.41. This scoring system is similar to OECD guideline 404.

No dermal irritation response was observed, neither at the intact nor at the abraded application sites.

In this study, 1,4 -BDDMA is not a dermal irritant..

Study performance does not comply with requirements of the relevant recent EU and OECD guidelines, where a less vigorous application regime with semi-occlusive dressing, an exposure period of 4 hours, treatment of only intact skin is stipulated.

Thus, it can be assumed, that a substance which shows no irritating activity under the application regime of guideline US FHSA Federal regulation: 16 CFR 1500.41 will also be non irritating under the application regimes of the relevant recent EU and OECD guidelines. Therefore the study is adequate for C&L purposes.

NOTE: Any of data in this dataset are disseminated by the European Union on a right-to-know basis and this is not a publication in the same sense as a book or an article in a journal. The right of ownership in any part of this information is reserved by the data owner(s). The use of this information for any other, e.g. commercial purpose is strictly reserved to the data owners and those persons or legal entities having paid the respective access fee for the intended purpose.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Eye irritation

Link to relevant study records

Reference

Endpoint:

eye irritation: in vivo

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1978

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods

Remarks:

Study performed before implementation of GLP.

Qualifier:

according to guideline

Guideline:

other: Appraisal of the safety of chemicals in foods, druge and cosmetics, by the Staft of the Division of Pharmacology, US FDA, Bewertung von Augen-Läsionen nach Draize (1959)

Deviations:

no

Qualifier:

equivalent or similar to guideline

Guideline:

other: US FHSA Federal regulation: 16 CFR 1500.42

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 405 (Acute Eye Irritation / Corrosion)

GLP compliance:

no

Remarks:

study performed before implementation of GLP

Specific details on test material used for the study:

- Name of test material (as cited in study report): 1,4-Butandioldimethacrylat

Species:

rabbit

Strain:

New Zealand White

Details on test animals or tissues and environmental conditions:

TEST ANIMALS
- Source: no data
- Age at study initiation: no data
- Weight at study initiation: 2.4 to 2.6 kg
- Housing: individually caged
- Diet (e.g. ad libitum): standard laboratory diet, ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: no data

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 18°C
- Humidity (%): 50 – 60%
- Air changes (per hr): no data
- Photoperiod (hrs dark / hrs light): 12/12

IN-LIFE DATES: no data

Vehicle:

unchanged (no vehicle)

Controls:

other: untreated right eye served as control

Amount / concentration applied:

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 0.1 mL
- Concentration (if solution): as supplied

Duration of treatment / exposure:

eys were not rinsed after application

Observation period (in vivo):

7 days

Number of animals or in vitro replicates:

6

Details on study design:

REMOVAL OF TEST SUBSTANCE
- Washing (if done): eyes were not rinsed for substance removal after treatment

SCORING SYSTEM: Draize scale

TOOL USED TO ASSESS SCORE: no data

Irritation parameter:

cornea opacity score

Basis:

animal: #1, #2, #3, #4, #5, #6

Remarks:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

4

Irritation parameter:

iris score

Basis:

animal: #1, #2, #3, #4, #5, #6

Remarks:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

2

Irritation parameter:

conjunctivae score

Basis:

animal: #1, #2, #3, #4, #5, #6

Remarks:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

3

Irritation parameter:

chemosis score

Basis:

animal: #1, #2, #3, #4, #5, #6

Remarks:

mean

Time point:

24/48/72 h

Score:

0

Max. score:

4

Irritant / corrosive response data:

Transient conjunctival irritating effects were seen 1, 2 and 8 hours after application in all 6 animals (conjunctival redness grade 2 after 1 hour, grade 1 or 0 after 2 and 8 hours, slight chemosis grade 1 and discharge grade 2). All effects were completely reversible at the 24 h scoring. From 24 h onward all scores were zero.

Interpretation of results:

GHS criteria not met

Conclusions:

In this primary eye irritation study 1,4-BDDMA is not an eye irritant.

Executive summary:

In a primary eye irritation study similar to US FHSA Federal regulation: 16 CFR 1500.42 (similar to OECD guideline 405),

0.1 mL of 1,4-BDDMA was instilled into the conjunctival sac of the left eye of 6 New Zealand White rabbits without removing the test substance. Animals then were observed for 7 days. Irritation was scored by the method of Draize.

Transient conjunctival irritating effects were seen 1, 2 and 8 hours after application. All effects were completely reversible at the 24 h scoring. From 24 h onward all scores were zero.

In this study, 1,4-BDDMA is not an eye irritant.

NOTE: Any of data in this dataset are disseminated by the European Union on a right-to-know basis and this is not a publication in the same sense as a book or an article in a journal. The right of ownership in any part of this information is reserved by the data owner(s). The use of this information for any other, e.g. commercial purpose is strictly reserved to the data owners and those persons or legal entities having paid the respective access fee for the intended purpose.

Endpoint conclusion

Endpoint conclusion:

no adverse effect observed (not irritating)

Respiratory irritation

Endpoint conclusion

Endpoint conclusion:

no study available

Additional information

Reliable (RL= 2), relevant and adequate data are available for the skin and eye irritation potential of 1,4 -BDDMA.

Skin irritation

In a primary dermal irritation study similar to US FHSA Federal regulation: 16 CFR 1500.41, 6 rabbits were dermally exposed to 0.5 mL of 1,4 -BDDMA to approximately 2.5 cm² skin area. Two application sites per animal were treated, one site was left intact, the other was abraded. Test sites were covered with an occlusive dressing for 24 hours. Animals were observed for 72 hours. Irritation was scored similar to FHSA Federal guideline 16 CFR 1500.41. This scoring system is similar to OECD guideline 404.

No dermal irritation response was observed, neither at the intact nor at the abraded application sites.

In this study, 1,4 -BDDMA is not a dermal irritant.

Study performance does not comply with requirements of the relevant recent EU and OECD guidelines, where a less vigorous application regime with semi-occlusive dressing, an exposure period of 4 hours, treatment of only intact skin is stipulated.

Thus, it can be assumed, that a substance which shows no irritating activity under the application regime of guideline US FHSA Federal regulation: 16 CFR 1500.41 will also be non irritating under the application regimes of the relevant recent EU and OECD guidelines.Therefore, the study is adequate for C&L purposes.

 

Eye irritation

In a primary eye irritation study similar to US FHSA Federal regulation: 16 CFR 1500.42 (similar to OECD guideline 405), 0.1 mL of 1,4-BDDMA (according to supplier's information: purity ca. 90%) was instilled into the conjunctival sac of the left eye of 6 New Zealand White rabbits without removing the test substance. Animals then were observed for 7 days. Irritation was scored by the method of Draize.

Transient conjunctival irritating effects were seen 1, 2 and 8 hours after application. All effects were completely reversible at the 24 h scoring. From 24 h onward all scores were zero.

In this study, 1,4-BDDMA is not an eye irritant.

Based on the available information, 1,4 -BDDMA is not irritating to the eye and the skin. There are no data gaps for the endpoint irritation/corrosion. No human information is available for this endpoint. However, there is no reason to believe that these results would not be applicable to humans.

Justification for selection of skin irritation / corrosion endpoint:
Only one key study available; test procedure according to national (US) standard; study performed before implementation of GLP.

Justification for selection of eye irritation endpoint:
Only one key study available; test procedure according to national (US) standard; study performed before implementation of GLP.

Justification for classification or non-classification

Based on the available data, 1,4-BDDMA does not need to be classified for eye irritation or skin irritation according to regulation (EC) 1272/2008 or the former European directive on classification and labelling 67/548/EEC. Thus, no labelling is required.