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EC number: - | CAS number: -
- Life Cycle description
- Uses advised against
- Endpoint summary
- Appearance / physical state / colour
- Melting point / freezing point
- Boiling point
- Density
- Particle size distribution (Granulometry)
- Vapour pressure
- Partition coefficient
- Water solubility
- Solubility in organic solvents / fat solubility
- Surface tension
- Flash point
- Auto flammability
- Flammability
- Explosiveness
- Oxidising properties
- Oxidation reduction potential
- Stability in organic solvents and identity of relevant degradation products
- Storage stability and reactivity towards container material
- Stability: thermal, sunlight, metals
- pH
- Dissociation constant
- Viscosity
- Additional physico-chemical information
- Additional physico-chemical properties of nanomaterials
- Nanomaterial agglomeration / aggregation
- Nanomaterial crystalline phase
- Nanomaterial crystallite and grain size
- Nanomaterial aspect ratio / shape
- Nanomaterial specific surface area
- Nanomaterial Zeta potential
- Nanomaterial surface chemistry
- Nanomaterial dustiness
- Nanomaterial porosity
- Nanomaterial pour density
- Nanomaterial photocatalytic activity
- Nanomaterial radical formation potential
- Nanomaterial catalytic activity
- Endpoint summary
- Stability
- Biodegradation
- Bioaccumulation
- Transport and distribution
- Environmental data
- Additional information on environmental fate and behaviour
- Ecotoxicological Summary
- Aquatic toxicity
- Endpoint summary
- Short-term toxicity to fish
- Long-term toxicity to fish
- Short-term toxicity to aquatic invertebrates
- Long-term toxicity to aquatic invertebrates
- Toxicity to aquatic algae and cyanobacteria
- Toxicity to aquatic plants other than algae
- Toxicity to microorganisms
- Endocrine disrupter testing in aquatic vertebrates – in vivo
- Toxicity to other aquatic organisms
- Sediment toxicity
- Terrestrial toxicity
- Biological effects monitoring
- Biotransformation and kinetics
- Additional ecotoxological information
- Toxicological Summary
- Toxicokinetics, metabolism and distribution
- Acute Toxicity
- Irritation / corrosion
- Sensitisation
- Repeated dose toxicity
- Genetic toxicity
- Carcinogenicity
- Toxicity to reproduction
- Specific investigations
- Exposure related observations in humans
- Toxic effects on livestock and pets
- Additional toxicological data
![](https://echa.europa.eu/o/diss-blank-theme/images/factsheets/A-REACH/factsheet/print_toxicological-information.png)
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- The study was performed between 02 December 2008 and 30 December 2008
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- other: Study conducted to GLP and in compliance with agreed protocols, with no or minor deviations from standard test guidelines and/or minor methodological deficiencies, which do not effect the quality of the relevant results.
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 009
- Report date:
- 2009
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 420 (Acute Oral Toxicity - Fixed Dose Method)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- UK GLP standards (Schedule 1, Good Laboratory Practice Regulations 1999 (SI 1999/3106 as amended by SI 2004/0994)).
- Test type:
- fixed dose procedure
- Limit test:
- yes
Test material
Constituent 1
Test animals
- Species:
- rat
- Strain:
- Wistar
- Sex:
- female
- Details on test animals or test system and environmental conditions:
- TEST ANIMALS
- Source: Harlan Laboratories UK Limited, Bicester, Oxon, UK
- Age at study initiation: 8 to 12 weeks.
- Weight at study initiation: 164-194 g (the bodyweight variation did not exceed +/- 20% of the initial/mean bodyweight of any previously dosed animal(s)
- Fasting period before study: Overnight fast immediately before dosing and for approximately three to four hours after dosing.
- Housing: The animals were housed in groups of up to four in suspended solid-floor polypropylene cages furnished with woodflakes.
- Diet (e.g. ad libitum): ad libitum
- Water (e.g. ad libitum): ad libitum
- Acclimation period: At least five days.
ENVIRONMENTAL CONDITIONS
- Temperature (°C): Set to achieve limits of 19 to 25°C
- Humidity (%): Set to achieve limits of 30 to 70%
- Air changes (per hr): At least fifteen changes per hour
- Photoperiod (hrs dark / hrs light): The lighting was controlled by a time switch to give twelve hours continous light (06:00 to 18:00) and twelve hours darkness.
IN-LIFE DATES: From: Day 0 To: Day 14
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- arachis oil
- Details on oral exposure:
- VEHICLE
- Concentration in vehicle: 200 mg/ml
- Amount of vehicle (if gavage): The volume administered to each aninmal was calculated according to its fasted bodyweight at the time of dosing.
- Justification for choice of vehicle: For the purpose of the study the test material was freshly prepared, as required, as a suspension in arachis oil BP. Arachis oil BP was used because the test material did not dissolve/suspend in distilled water.
MAXIMUM DOSE VOLUME APPLIED: 10 ml/kg
DOSAGE PREPARATION: All animals were dosed once only by a gavage using a metal cannula attached to a graduated syringe.
- Rationale for the selection of the starting dose: Using available information on the toxicity of the test material, 2000 mg/kg was chosen as the starting dose. - Doses:
- Starting dose: 2000 mg/kg
Additional group: 2000 mg/kg - No. of animals per sex per dose:
- Starting dose: 1 female at 2000 mg/kg
Additional group: 4 females at 2000 mg/kg
A total of five animals were therefore treated at a dose level of 2000 mg/kg - Control animals:
- no
- Details on study design:
- - Duration of observation period following administration: 14 days
- Frequency of observations and weighing: Clinical observations were made 1/2, 1, 2 and 4 hours after dosing and subsequently once daily for fourteen days. Morbidity and mortality checks were made twice daily. Individual bodyweights were recorded on Day 0 (the day of dosing) and on Days 7 and 14.
- Necropsy of survivors performed: yes
- Other examinations performed: At the end of the observation period the animals were killed by cervical dislocation. All animals were subject to gross necropsy. This consisted of an external examination and opening of the abdominal and thoracic cavities. The appearance of any macroscopic abnormalities was recorded. No tissues were retained.
Results and discussion
- Preliminary study:
- In the absence of mortality at a dose level of 2000 mg/kg, an additional group of 4 animals was treated at a dose level of 2000 mg/kg.
Effect levels
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Remarks on result:
- other: 95% CL not stated.
- Mortality:
- There were no deaths.
- Clinical signs:
- other: Hunched posture and pilo-erection were noted in one animal one to four days after dosing with hunched posture noted five to nine days after dosing. No signs of systemic toxicity were noted in the remaining animals.
- Gross pathology:
- No abnormalities were note at necropsy.
- Other findings:
- None.
Any other information on results incl. tables
The acute oral median dose (LD50) of the test material in the female Wistar strain rat was estimated to be greater than 2000 mg/kg.
Table1 Individual Clinical Observations and Mortality Data
Dose Level mg/kg |
Animal Number and Sex |
Effects Noted After Dosing |
Effects Noted During Period After Dosing |
||||||||||||||||
½ |
1 |
2 |
4 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8 |
9 |
10 |
11 |
12 |
13 |
14 |
||
2000 |
1-0 Female |
0 |
0 |
0 |
0 |
HP |
HP |
HP |
HP |
H |
H |
H |
H |
H |
0 |
0 |
0 |
0 |
0 |
2-0 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
2-1 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
2-2 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
2-3 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
Table2 Individual Bodyweights and Bodyweight Changes
Dose Level mg/kg |
Animal Number and Sex |
Bodyweight (g) at Day |
Bodyweight Gain (g) During Week |
|||
0 |
7 |
14 |
1 |
2 |
||
2000 |
1-0 Female |
181 |
176 |
180 |
-5 |
4 |
2-0 Female |
194 |
199 |
216 |
5 |
17 |
|
2-1 Female |
186 |
195 |
216 |
9 |
21 |
|
2-2 Female |
164 |
172 |
189 |
8 |
17 |
|
2-3 Female |
186 |
199 |
214 |
13 |
15 |
Table3 Individual Necropsy Findings
Dose Level |
Animal Number |
Time of Death |
Macroscopic Observations |
2000 |
1-0 Female |
Killed Day 14 |
No abnormalities detected |
2-0 Female |
Killed Day 14 |
No abnormalities detected |
|
2-1 Female |
Killed Day 14 |
No abnormalities detected |
|
2-2 Female |
Killed Day 14 |
No abnormalities detected |
|
2-3 Female |
Killed Day 14 |
No abnormalities detected |
0= No signs of systemic toxicity
H = Hunched posture
P = Pilo-erection
Applicant's summary and conclusion
- Interpretation of results:
- not classified
- Remarks:
- Migrated information Criteria used for interpretation of results: EU
- Conclusions:
- The acute oral median lethal dose (LD50) of the test material in the female Wistar rat was estimated to be greater than 2000 mg/kg.
- Executive summary:
Introduction.
The study was performed to assess the acute oral toxicity of the test material in the Wistar strain rat. The method was designed to meet the requirements of the following:
- OECD Guidelines for Testing of Chemicals No 420 "Acute Oral Toxicity - Fixed Dose Method" (adopted 17 December 2001)
- Method B1 bis Acute Toxicity (Oral) of Commision Directive 2004/73/EC
Method.
Following a sighting test at a dose level of 2000 mg/kg, an additional four fasted female animals were given a single oral dose of test material, as a suspension in arachis oil BP, at a dose level of 2000 mg/kg bodyweight. Clinical signs and bodyweight development were monitered during the study. All animals were subjected to gross necropsy.
Mortality.
There were no deaths.
Clinical Observations.
Signs of systemic toxicity noted in one animal were huched posture and pilo-erection. The animal appeared normal ten days after dosing. There were no signs of systemic toxicity in the remaining animals.
Bodyweight.
Animals showed expected gains in bodyweight during the study, except for one animal which showed bodyweight loss during the first week but expected gain in bodyweight during the second week.
Necropsy.
No abnormalities were noted at necropsy.
Conclusion.
The acute oral median lethal dose (LD50) of the test material in the female Wistar strain rat was estimated to be greater than 2000 mg/kg bodyweight.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
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