Esterification product of castor oil and tetrahydromethyl-1,3-isobenzofuranedione

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: guideline study and GLP

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2008

Report date:

2008

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.1 tris (Acute Oral Toxicity - Acute Toxic Class Method)

GLP compliance:

yes (incl. QA statement)

Test type:

acute toxic class method

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

Esterification product of castor oil and tetrahydromethyl-1,3-isobenzofuranedione

EC Number:

700-064-6

Cas Number:

2105830-60-0

Molecular formula:

Not applicable as this is a UVCB substance

IUPAC Name:

Esterification product of castor oil and tetrahydromethyl-1,3-isobenzofuranedione

Constituent 2

Reference substance name:

[TN]Multiester P97-463[/TN][SPEC][/SPEC][AM]100 %[/AM]

IUPAC Name:

[TN]Multiester P97-463[/TN][SPEC][/SPEC][AM]100 %[/AM]

Details on test material:

Multiester P97-463
Batch No: NB2890-61

Test animals

Species:

rat

Strain:

Wistar

Sex:

female

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

propylene glycol

Details on oral exposure:

The formulations were prepared within 4 hours prior to dosing. Homogeneity was accomplished to a visually acceptable level. Adjustment was made for specific gravity of the vehicle and the density of the test substance. The test substance could technically not be dosed undiluted as delivered by the sponsor. In order to obtain homogeneity, the test substance formulations were heated in a water bath with a maximum temperature of 65 °C
for a maximum of 25 minutes.

Doses:

2000 mg/kg body weight

No. of animals per sex per dose:

6

Control animals:

no

Details on study design:

Stepwise treatment of 2 groups of 3 females

Statistics:

No statistical analysis was performed. The method used is not intended to allow the calculation of a precise LD50 value.

Results and discussion

Effect levels

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Remarks on result:

other: based on act. ingr.

Mortality:

No mortality occurred.

Clinical signs:

No clinical signs were observed in the first group of three females. The second group showed hunched posture on Days 1 and 2 and uncoordinated movements on Day 1. There is no indication in the raw data that could explain the difference in clinical signs observed between both groups.

Body weight:

The mean body weight gain shown by the animals over the study period was considered to be normal.

Gross pathology:

No abnormalities were found at macroscopic post mortem examination of the animals.

Applicant's summary and conclusion

Interpretation of results:

not classified

Remarks:

Migrated information EU DSD and UN GHS Criteria used for interpretation of results: EU

Conclusions:

The oral LD50 value of Multiester P97-463 in Wistar rats was established to exceed 2000 mg/kg body weight.
According to the OECD 423 test guideline the LD50 cut-off value was considered to exceed 5000 mg/kg body weight.
Based on these results Multiester P97-463 does not have to be classified and has no obligatory labeling requirement for oral toxicity according to the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) of the United Nations (2007) and EC criteria for classification and labeling requirements for dangerous substances and preparations (Council Directive 67/548/EEC).

Executive summary:

The study was carried out based on the guidelines described in: OECD No.423 (2001) "Acute Oral Toxicity, Acute Toxic Class Method" EC, Council Directive 67/548/EEC, Annex V, B.1 tris (2004) "Acute Toxic Class Method" EPA, OPPTS 870.1100 (2002), "Acute Oral Toxicity" JMAFF guidelines (2000) including the most recent partial revisions.

Multiester P97-463 was administered by oral gavage to two subsequent groups of three female Wistar rats at 2000 mg/kg body weight. Animals were subjected to daily observations and weekly determination of body weight. Macroscopic examination was performed after terminal sacrifice (Day 15). No mortality occurred. No clinical signs were observed in the first group of three females. The second group showed hunched posture on Days 1 and 2 and uncoordinated movements on Day 1. There is no indication in the raw data that could explain the difference in clinical signs observed between both groups. The mean body weight gain shown by the animals over the study period was considered to be normal. No abnormalities were found at macroscopic post mortem examination of the animals.

The oral LD50 value of Multiester P97-463 in Wistar rats was established to exceed 2000 mg/kg body weight.

According to the OECD 423 test guideline the LD50 cut-off value was considered to exceed 5000 mg/kg body weight. Based on these results Multiester P97-463 does not have to be classified and has no obligatory labeling requirement for oral toxicity according to the Globally Harmonized System of Classification and Labeling of Chemicals (GHS) of the United Nations (2007) and EC criteria for classification and labeling requirements for dangerous substances and preparations (Council Directive 67/548/EEC).