Reaction mass of 2-hydroxyethyl ricinoleate and (R)-12-hydroxyoleic acid, monoester with glycerol

Acute Toxicity: dermal

Administrative data

Endpoint:

acute toxicity: dermal

Type of information:

experimental study

Adequacy of study:

key study

Study period:

1978 June-October

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

test procedure in accordance with national standard methods with acceptable restrictions

Justification for type of information:

Test performed by nationally accredited lab with well-defined protocol.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1978

Report date:

1978

Materials and methods

Test guideline

Qualifier:

according to guideline

Guideline:

other: 16 CFR 1500.40

Principles of method if other than guideline:

- Principle of test: To determine the lethality of the test material when applied to the skin of rabbits.
- Short description of test conditions: Test material is applied to either intact or abraded skin of the rabbit, and wrapped in an occluded bandage for 24 hours. Animals were observed for toxicity for 14 days thereafter.
- Parameters analysed / observed: Mortality, overt signs of toxicity, gross organ pathology (necropsy/autopsy), weight changes.

GLP compliance:

no

Test type:

standard acute method

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

2-hydroxyethyl ricinoleate

EC Number:

203-369-8

EC Name:

2-hydroxyethyl ricinoleate

Cas Number:

106-17-2

Molecular formula:

C20H38O4

IUPAC Name:

2-hydroxyethyl 12-hydroxyoctadec-9-enoate

Constituent 2

Reference substance name:

2,3-dihydroxypropyl 12-hydroxy-9-octadecenoate

EC Number:

205-455-0

EC Name:

2,3-dihydroxypropyl 12-hydroxy-9-octadecenoate

Cas Number:

141-08-2

Molecular formula:

C21H40O5

IUPAC Name:

2,3-dihydroxypropyl 12-hydroxyoctadec-9-enoate

Test material form:

liquid

Specific details on test material used for the study:

SOURCE OF TEST MATERIAL
- Source and lot/batch No.of test material:
NL Industries
- Expiration date of the lot/batch:
Lot # 60-8313-01
- Purity test date:
N/A

STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL
- Storage condition of test material:
Not reported
- Stability under test conditions: Assumed to be stable
- Solubility and stability of the test substance in the solvent/vehicle:
N/A
- Reactivity of the test substance with the solvent/vehicle of the cell culture medium:
N/A

TREATMENT OF TEST MATERIAL PRIOR TO TESTING
- Treatment of test material prior to testing:
Used as received
- Preliminary purification step (if any):
None
- Final dilution of a dissolved solid, stock liquid or gel:
N/A
- Final preparation of a solid:
N/A

FORM AS APPLIED IN THE TEST (if different from that of starting material)
: N/A

TYPE OF BIOCIDE/PESTICIDE FORMULATION (if applicable)
: N/A

OTHER SPECIFICS:

Test animals

Species:

rabbit

Strain:

New Zealand White

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Summit View Farms, Belvidere, New Jersey, USA
- Age at study initiation: Not reported
- Weight at study initiation: 2.3-3 kg
- Housing: Individually housed
- Diet (e.g. ad libitum): Ad libitum Purina Rabbit Chow
- Water (e.g. ad libitum): Ad libitum
- Acclimation period: Not reported

ENVIRONMENTAL CONDITIONS
- Temperature (°C):
Not reported
- Humidity (%): Not reported
- Air changes (per hr): Not reported
- Photoperiod (hrs dark / hrs light): Not reported

IN-LIFE DATES: From: To: Not reported

Administration / exposure

Type of coverage:

occlusive

Vehicle:

unchanged (no vehicle)

Details on dermal exposure:

TEST SITE
- Area of exposure: Trunk
- % coverage: Not reported
- Type of wrap if used: non-reactive heavy gauge plastic, covered with opaque wrapping

REMOVAL OF TEST SUBSTANCE
- Washing (if done): Not reported (test material gently wiped off)
- Time after start of exposure: 24 hr

TEST MATERIAL
- Amount(s) applied (volume or weight with unit): 2000 mg
- Concentration (if solution): N/A
- Constant volume or concentration used: yes
- For solids, paste formed: N/A

VEHICLE
- Amount(s) applied (volume or weight with unit): N/A
- Concentration (if solution): N/A
- Lot/batch no. (if required): N/A
- Purity: N/A

Duration of exposure:

24 hr

Doses:

1

No. of animals per sex per dose:

5 (2 animals of each sex were abraded, 3 animals of each sex were not abraded)

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Initial, termination
- Necropsy of survivors performed: yes
- Other examinations performed: clinical signs, body weight,organ weights, histopathology, other: irritation (erythema and edema)

Results and discussion

Effect levels

Key result

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

None

Clinical signs:

4 animals exhibited diarrhea during the window of 6 hr - 3 days post-exposure.

Body weight:

No major changes observed

Gross pathology:

No abnormal pathology observed. Irritation was noted at the application sites.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The test substance was evaluated under the criteria defined by 16 CFR 1500.40 for acute dermal toxicity in vivo. The test substance was determined to be non-toxic via the dermal route at exposure doses up to 2000 mg.