Reaction mass of trimethylolpropane triacrylate and hexamethyleneimine

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

22 March 2018 - 13 June 2018

Reliability:

1 (reliable without restriction)

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2018

Report date:

2018

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

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

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:

Reaction mass of trimethylolpropane triacrylate and hexamethyleneimine

EC Number:

946-043-7

IUPAC Name:

Reaction mass of trimethylolpropane triacrylate and hexamethyleneimine

Test material form:

liquid

Specific details on test material used for the study:

Identification: Photomer 4250
Appearance: Colourless to pale yellow liquid
Batch: 17C13003
Purity/Composition: Not indicated
Test item storage: At room temperature
Stable under storage conditions until: 14 September 2018 (expiry date)
Additional information
Test Facility test item number: 209236/A
Purity/Composition correction factor: No correction factor required
CAS number: 73003-78-8
Specific gravity / density: 9.12 lb/gallon

Test animals

Species:

rat

Strain:

Wistar

Sex:

female

Details on test animals or test system and environmental conditions:

The animals were allowed to acclimate to the Test Facility toxicology accommodation for at least 5 days before the commencement of dosing.

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

unchanged (no vehicle)

Doses:

The Test Item, Photomer 4250, was administered as received.
Adjustment was made for specific gravity of the test item (9.12 lb/gallon = 1.093 g/cm3). No correction was made for the purity/composition of the test item

No. of animals per sex per dose:

6 Females (nulliparous and non-pregnant). Each dose group consisted of 3 animals.

Control animals:

no

Statistics:

The oral LD50 value of the test item was ranked within the following ranges: 0-5, 5-50, 50-300 or 300-2000 mg/kg b.w. or as exceeding 2000 mg/kg b.w. The LD50 cut-off value was established based on OECD guideline 423. 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

Based on:

test mat.

Mortality:

No mortality occurred.

Clinical signs:

other: Hunched posture and piloerection were noted for all animals on Day 1

Gross pathology:

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

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The oral LD50 value of Photomer 4250 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, Photomer 4250 does not have to be classified and has no obligatory labelling requirement for acute oral toxicity according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2017) (including all amendments) and Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures (including all amendments).

Executive summary:

The objective of this study was to determine the potential toxicity of Photomer 4250, when given by oral gavage at a single dose to rats of a single sex at one or more defined doses to evaluate the potential reversibility of any findings.

The study was carried out in compliance with the guidelines described in:

•       OECD No.423 (2001) "Acute Oral Toxicity, Acute Toxic Class Method"

•       EC No 440/2008, part B: "Acute Oral Toxicity, Acute Toxic Class Method"

•       EPA, OPPTS 870.1100 (2002), "Acute Oral Toxicity"

•       JMAFF Guidelines (2000), including the most recent revisions.

Photomer 4250 was administered by oral gavage to two consecutive 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.

Hunched posture and piloerection were noted for all animals on Day 1.

The body weight gain shown by the animals over the study period was considered to be similar to that expected for normal untreated animals of the same age and strain.

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

The oral LD50 value of Photomer 4250 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, Photomer 4250 does not have to be classified and has no obligatory labelling requirement for acute oral toxicity according to the Globally Harmonized System of Classification and Labelling of Chemicals (GHS) of the United Nations (2017) (including all amendments) and Regulation (EC) No 1272/2008 on classification, labelling and packaging of items and mixtures (including all amendments).