{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}methaniminium 3-[(4-anilinophenyl)diazenyl]benzenesulfonate

Acute Toxicity: oral

Administrative data

Endpoint:

acute toxicity: oral

Type of information:

experimental study

Adequacy of study:

key study

Study period:

From 29 July 2014 to 19 August 2014

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: see 'Remark'

Remarks:

The reliability is rated 1 because the study followed the standard guideline of reference (OECD 423), which describes a procedure designed to evaluate this endpoint, the results were reviewed for reliability and assessed as valid, and the study was conducted under GLP condition.

Data source

Reference

Reference Type:

study report

Title:

Unnamed

Year:

2014

Report date:

2014

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:

{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}methaniminium 3-[(4-anilinophenyl)diazenyl]benzenesulfonate

EC Number:

941-492-5

Cas Number:

1821464-52-1

Molecular formula:

C35H36N6SO3

IUPAC Name:

{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}methaniminium 3-[(4-anilinophenyl)diazenyl]benzenesulfonate

Constituent 2

Reference substance name:

{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}methaniminium 3-[(4-anilinophenyl)diazenyl]benzenesulfonate

IUPAC Name:

{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}{[(2,4 and 2,5 and 2,6)-dimethylphenyl and 2-ethylphenyl]amino}methaniminium 3-[(4-anilinophenyl)diazenyl]benzenesulfonate

Test material form:

solid: particulate/powder

Remarks:

migrated information: powder

Details on test material:

- Name of test material (as cited in study report): Sepisol Fast Yellow MG-F
- Physical state: Power
- Stability under test conditions: Stable
- Storage condition of test material: room temperature

Test animals

Species:

rat

Strain:

Sprague-Dawley

Sex:

female

Details on test animals or test system and environmental conditions:

TEST ANIMALS
- Source: Elevage JANVIER (53940 Le Genest St Isle - France)
- Age at study initiation: 8 weeks old
- Weight at study initiation: between 173 g and 202 g
- Fasting period before study: Food removed on D-1 and redistributed 4 hours after the test administration
- Housing: Solid-bottomed clear polycarbonate cages with a stainless steel mesh lid, containing sawdust bedding changed at least 2 times a week. Cages are placed in conventional air contitioned animal husbandry.
- Diet : Food stuff (A04, SAFE) supplied ad libitum
- Water : Tap water from public distribution system (microbiologically and chemically analysed every 6 months) supplied ad libitum.
- Acclimation period: Five days at least.

ENVIRONMENTAL CONDITIONS
- Temperature (°C): 19 to 25 °C
- Humidity (%): 30 to 70% RH
- Air changes (per hr): at least 10 changes per hour
- Photoperiod (hrs dark / hrs light): 12 hrs dark/12 hrs light

Administration / exposure

Route of administration:

oral: gavage

Vehicle:

olive oil

Details on oral exposure:

VEHICLE
- Concentration in vehicle: 2.0054 g of test item for the first step and 0.3068 or 0.3005 g of test item for the second and third step in 10 mL volumetric flask field of olive oil.
- Amount of vehicle (if gavage): 10 mL/kg/bw of preparation

Doses:

Step 1: 2000 mg/kg/bw
Steps 2 and 3: 300 mg/kg/bw

No. of animals per sex per dose:

3 females per dose per step.

Control animals:

no

Details on study design:

- Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Daily examination. Weighing on D0 (prior administration), D2, D7 and D14.
- Necropsy of survivors performed: yes. Animals anaesthetised with sodium pentobarbital and administration continued to fatal levels. Examination of organs likely to be modified in cases of acute toxicity.
- Other examinations performed: Observation and mortality report carried out every day : examination of behavioural or toxic effects on the major physiological functions: clinical signs (spontaneous activity, Preyer's reflex, respiratory rate, convulsions, tremors, body temperature, muscle tone, palpebral opening, pupil appearance, salivation, lachrymation, righting reflex, back hair appearance)

Statistics:

no statistic was used

Results and discussion

Effect levels

Sex:

female

Dose descriptor:

LD50

Effect level:

>= 300 - <= 2 000 mg/kg bw

Based on:

test mat.

Mortality:

Step 1 at 2000 mg/kg/bw: death of 2 of the rats at 22 hrs 55 minutes post-dose (2/3).
Step 2 and 3 at 300 mg/kg/bw : no mortality occured (6/6).

Clinical signs:

At 2000 mg/kg/bw of the 2 dead rats: rigor mortis before necropsy (2/2). Orange faeces and urine during D1 (2/2)

At 2000 mg/kg/bw of the surviving animal: no clinical signs (1/1). Orange faeces and urine during D1 (1/1).

At 300 mg/kg/bw : no clinical signs (6/6).

Body weight:

At 2000 mg/kg/bw of the surviving animal : evolution remained normal during the study (1/1)

At 300 mg/kg/bw : evolution remained normal during the study (6/6).

Gross pathology:

At 2000 mg/kg/bw: No treatment related changes revealed at the macroscopic examination (3/3).

At 300 mg/kg/bw: No treatment related changes revealed at the macroscopic examination (6/6).

Any other information on results incl. tables

Control study N° TA0 -2014 -006 on Olive Oil used as the vehicule in the study.

The study was performed to assess the comportment of the strain of rat used at Phycher laboratory in its environment and to give additional historical data.

Performed from 08 July 2014 to 22 July 2014.

The method was designed to meet the requirements of the following:

- OECD guideline for the testing of chemicals N°423 dated December 17th, 2001

- Method B.1tris of the council regulation N°440/2008

Three animals received the control item Olive Oil, administered by gavage under a volume of 10 mL/kg body weight using a suitable syringe graduated fitted with an oesophageal metal canula.

No clinical signs, body weight changes nor treatment related changes were reported (3/3 animals normal)

Applicant's summary and conclusion

Interpretation of results:

Toxicity Category IV

Remarks:

Migrated information Criteria used for interpretation of results: EU

Conclusions:

The LD50 of the test item is higher than 300 mg/kg/bw and lower than 2000 mg/kg/bw by oral route in rats.
In accordance with the OECD guideline N°423, the LD50 cut-off of the test item may be considered as 1000 mg/kg/bw by oral route in the rat.

In accordance with the E.E.C directives 67/548, 2001/59 and 99/45, the test item must be classified R22 "harmful is swallowed". The symbol "Xn" and the warning label "Harmful" are required.
In accordant with the regulation EC 1272/2008, the test item must be classified in category 4. The signal word "Warning" and hazard statement H302 "Harmful is swallowed" are required.

Executive summary:

The test item Sepisol Fast Yellow MG-F was administered to a group of 3 female Sprague Dawley rats at the single dose of 2000 mg/kg/bw and then to a group of 6 females Sprague Dawley at the single dose of 300 mg/kg/bw. The experimental protocol was established according to the official method as defined in the OECD guideline No. 423 date December 17th, 2001, and the test method B.1tris of the Council regulation No. 440/2008.

It was noted the death of 2 rats treated at 2000 mg/kg/bw at 2 hrs 55 minutes post-dose (2/3).

Orange faeces and urine was noted during the 1st day of the test.

Rigor mortis was noted before the necropsy (2/2).

The macroscopic examination did not reveal treatment related changes (2/2).

In the surviving animal treated at 2000 mg/kg b.w. (1/3), orange faeces and urine was noted during the 1st day of the test.

The body weight evolution remained normal during the study.

The macroscopic examination of this animal at the end of the study did not reveal treatment related changes.

No mortality occured in animals treated at 300 mg/kg/bw.

No clinical signs related to the administration of the test item at 300mg/kg were observed during the study.

The body weight evolution remained normal during the study.

The macroscopic examination of the animals at the end of the study did not reveal teatment related changes.

In conclusion, the LD50 of the test item is higher the 300 mg/kg/bw and lower than 2000 mg/kg/bw by oral route in rats.

In accordance with the OECD guidelin No. 423, the LD50 cut-off ot the test item may be considered as 1000 mg/kg/bw by oral route in rats.

According to the criteria for classification, packaging and labelling of dangerous substances and preparations in accordance with the E.E.C directives 67/548, 2001/59 and 99/45, the test item must be classified R22 "Harmful is swallowed". The item must be characterised by the symbol "Xn" and the warning label "Harmful".

In accordance with the regulation EC No. 1272/2008, the test item must be classified in category 4. The signal word "Warning" and hazard statement H302 "Harmful is swallowed" are required.