1,3-bis(2,4,4-trimethylpentan-2-yl)trisulfane

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

04 November 2015 - 26 November 2015

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2016

Report date:

2016

Materials and methods

Test guideline

Test guideline 1

Qualifier:

according to guideline

Guideline:

OECD Guideline 420 (Acute Oral Toxicity - Fixed Dose Method)

Deviations:

no

Test guideline 2

Qualifier:

according to guideline

Guideline:

EU Method B.1 bis (Acute Oral Toxicity - Fixed Dose Procedure)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Test type:

fixed dose procedure

Limit test:

yes

Test material

Test material information

Constituent 1

Reference substance name:

bis(2,4,4-trimethylpentan-2-yl)trisulfane

EC Number:

941-787-9

Cas Number:

98222-50-5

Molecular formula:

C16 H34 S3

IUPAC Name:

bis(2,4,4-trimethylpentan-2-yl)trisulfane

Test material form:

liquid

Details on test material:

Name: DAILUBE IS-30
Chemical Name: 1, 3-bis (2, 4, 4-trimethylpentan-2yl) trisulfane
Use: Lubricant Additive
Molecular Formula: CH3-C(CH3)2-CH2-C(CH3)2-SSS-C(CH3)2-CH2-C(CH3)2-CH3
Molecular Weight: 322 g/mol
Appearance Pale yellow
Physical State: Liquid
Batch Number: L002
Purity: 95.4% by weight
Storage: Room temperature, in the dark
Expiry Date: 2016/8/15

Specific details on test material used for the study:

Batch: L002
Purity: 95.4%
Physical state/Appearance: pale yellow liquid
Expiry Date: 15 August 2016
Storage Conditions: room temperature in the dark

Test animals

Species:

rat

Strain:

Wistar

Sex:

female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Females nulliparous and non-pregnant: yes
- Age at study initiation: 8 to 12 weeks
- Weight at study initiation: variation did not exceed ±20% of the mean body weight
- Fasting period before study: overnight fast immediately before dosing and for approximately 3 to 4 hours after dosing
- Housing: suspended solid floor polypropylene cages furnished with woodflakes
- Diet: free access to food
- Water: free access to mains drinking water
- Acclimation period: at least 5 days

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19 to 25
- Humidity (%): 30 to 70
- Air changes (per hr): at least fifteen changes per hour
- Photoperiod (hrs dark / hrs light): 12 hours continuous light and 12 hours darkness

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

arachis oil

Details on oral exposure:

VEHICLE
- Justification for choice of vehicle: the test item did not dissolve/suspend in distilled water.

MAXIMUM DOSE VOLUME APPLIED: 2.11 mL/kg

No analysis was conducted to determine the homogeneity, concentration or stability of the test item formulation. This is an exception with regard to GLP and has been reflected in the GLP compliance statement.

Doses:

Starting dose: 300 mg/kg (absence of data regarding the toxicity of the test item)
2000 mg/kg

No. of animals per sex per dose:

4

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Day 0 (the day of dosing) and on Days 7 and 14; Clinical observations were made 30 minutes, 1, 2, and 4 hours after dosing and then daily for 14 days. Morbidity and mortality checks were made twice daily.
- Necropsy of survivors performed: yes

Results and discussion

Preliminary study:

Dose Level - 300 mg/kg
There was no mortality.
No signs of systemic toxicity were noted during the observation period.
The animal showed expected gains in body weight over the observation period.
No abnormalities were noted at necropsy.

Effect levels

Key result

Sex:

female

Dose descriptor:

LD50

Effect level:

> 2 000 mg/kg bw

Based on:

test mat.

Mortality:

There were no deaths.

Clinical signs:

other: No signs of systemic toxicity were noted during the observation period.

Gross pathology:

No abnormalities were noted at necropsy.

Applicant's summary and conclusion

Interpretation of results:

GHS criteria not met

Conclusions:

The acute oral median lethal dose (LD50) of the test item in the female Wistar strain rat was estimated to be greater than 2000 mg/kg body weight (Globally Harmonized Classification System - Unclassified).