2-hydroxyethyl palmitate

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

read-across based on grouping of substances (category approach)

Adequacy of study:

weight of evidence

Study period:

12 Jun 1991 - 26 Jun 1991

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

other: Comparable to guideline study with acceptable restrictions. Lack of test material details, no necropsy performed.

Justification for type of information:

The Glycol ester category covers esters of an aliphatic diol (ethylene glycol (EG), propylene glycol (PG) or 1,3-butyleneglycol (1,3-BG)) and one or two carboxylic fatty acid chains. The fatty acid chains comprise carbon chain lengths ranging from C6 to C18, mainly saturated but also mono unsaturated C16 and C18, branched C18 and epoxidized C18.
 
The available data allows for an accurate hazard and risk assessment of the category and the category concept is applied for the assessment of environmental fate and environmental and human health hazards. Thus, where applicable, environmental and human health effects are predicted from adequate and reliable data for source substance(s) within the group by interpolation to the target substances in the group (read-across approach) applying the group concept in accordance with Annex XI, Item 1.5, of Regulation (EC) No 1907/2006. In particular, for each specific endpoint the source substance(s) structurally closest to the target substance is/are chosen for read-across, with due regard to the requirements of adequacy and reliability of the available data. Structural similarities and similarities in properties and/or activities of the source and target substance are the basis of read-across.
A detailed justification for the grouping of chemicals and read-across is provided in the technical dossier (see IUCLID Section 13).

Cross-reference

Reason / purpose for cross-reference:

read-across source

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

1991

Report date:

1991

Materials and methods

Test guideline

Test guideline 1

Qualifier:

equivalent or similar to guideline

Guideline:

OECD Guideline 401 (Acute Oral Toxicity)

Deviations:

yes

Remarks:

lack of test material details, no necropsy performed

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: FHSA/CPSC: Federal Hazardous Substances Control Act, 16 CFR 1500.3

Deviations:

no

GLP compliance:

not specified

Test type:

standard acute method

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Ethylene distearate

EC Number:

211-014-3

EC Name:

Ethylene distearate

Cas Number:

627-83-8

Molecular formula:

C38H74O4

IUPAC Name:

ethane-1,2-diyl dioctadecanoate

Test animals

Species:

rat

Strain:

Sprague-Dawley

Sex:

male/female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Hilltop Lab Animals, Scottdale, PA, USA
- Age at study initiation: young adult, not further specified
- Weight at study initiation: 184-205 g
- Fasting period before study: 18 h
- Housing: individually in suspended stainless steel caging with mesh floors
- Diet: pelleted Purina Rat Chow #5012, ad libitum
- Water: tap water, ad libitum
- Acclimation period: 7 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 20-22

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

CMC (carboxymethyl cellulose)

Remarks:

2.5%

Details on oral exposure:

VEHICLE
- Concentration in vehicle: 25% w/w
- Amount of vehicle (if gavage): 2.0-2.3 mL/kg bw

MAXIMUM DOSE VOLUME APPLIED: 2.3 mL/kg bw

Doses:

5000 mg/kg bw administered as two doses due to the volume of test material of 2.0-2.3 mL each within 24h.

No. of animals per sex per dose:

5

Control animals:

other: not required

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: the rats were observed for signs of gross toxicity and mortality at 1, 2, 3, 4, 5 and 24 h post-dosing, and at least once daily thereafter for 14 days. Body weights were recorded initially and at termination (Day 14).
- Necropsy of survivors performed: no
- Other examinations performed: clinical signs, body weight

Results and discussion

Effect levels

Sex:

male/female

Dose descriptor:

LD50

Effect level:

> 5 000 mg/kg bw

Based on:

test mat.

Remarks on result:

other: administered as two doses within 24 h.

Mortality:

No mortalities occurred.

Clinical signs:

other: No abnormal clinical signs were observed.

Gross pathology:

Not examined.

Applicant's summary and conclusion

Interpretation of results:

not classified

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

CLP: not classified
DSD: not classified