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EC number: 814-345-7 | CAS number: 2003244-43-5
- 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
Acute Toxicity: oral
Administrative data
- Endpoint:
- acute toxicity: oral
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- Experimental start date: 15 March 2016 - Experimental completion date 05 April 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 016
- Report date:
- 2016
Materials and methods
Test guideline
- Qualifier:
- according to guideline
- Guideline:
- OECD Guideline 423 (Acute Oral toxicity - Acute Toxic Class Method)
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Test type:
- acute toxic class method
- Limit test:
- no
Test material
- Reference substance name:
- 3-(6,6-dimethylbicyclo[3.1.1]hept-2-en-2-yl)-2,2-dimethylpropanenitrile
- EC Number:
- 814-345-7
- Cas Number:
- 2003244-43-5
- Molecular formula:
- C14H21N
- IUPAC Name:
- 3-(6,6-dimethylbicyclo[3.1.1]hept-2-en-2-yl)-2,2-dimethylpropanenitrile
- Details on test material:
- - Name of test material (as cited in study report): ES421 Pinyl Nitrile- Molecular weight (if other than submission substance): 203 g/mol- Physical state: Crystallized white powder- Analytical purity: 98.08% (per Certificate of Analysis)- Composition of test material, percentage of components: 2-Norpinene-2-propionitrile, alpha, alpha,6,6-tetramethyl- Purity test date: 08 February 2016- Lot/batch No.: SM15077102- Storage condition of test material: 2-8°C, protected from light
1
- Specific details on test material used for the study:
- Physical state/Appearance: white solid
Storage Conditions: approximately 4 °C in the dark
Test animals
- Species:
- rat
- Strain:
- Wistar
- Sex:
- female
- Details on test animals or test system and environmental conditions:
- On receipt the animals were randomly allocated to cages. The females were nulliparous and non pregnant. After an acclimatization period of at least 5 days the animals were selected at random and given a number unique within the study by indelible ink marking on the tail and a number written on a cage card. At the start of the study the animals were 8 to 12 weeks of age. The body weight variation did not exceed ±20% of the mean body weight at the start of treatment.
The animals were housed in groups of up to four in suspended solid floor polypropylene cages furnished with woodflakes. With the exception of an overnight fast immediately before dosing and for approximately 3 to 4 hours after dosing, free access to mains drinking water and food was allowed throughout the study. The diet, drinking water and bedding were routinely analyzed and were considered not to contain any contaminants that would reasonably be expected to affect the purpose or integrity of the study.
The temperature and relative humidity were set to achieve limits of 19 to 25 °C and 30 to 70% respectively. The rate of air exchange was at least fifteen changes per hour and the lighting was controlled by a time switch to give 12 hours continuous light and 12 hours darkness.
The animals were provided with environmental enrichment items which were considered not to contain any contaminant of a level that might have affected the purpose or integrity of the study.
Administration / exposure
- Route of administration:
- oral: gavage
- Vehicle:
- arachis oil
- Remarks:
- Arachis oil BP was used because the test item did not dissolve/suspend in distilled water.
- Details on oral exposure:
- All animals were dosed once only by gavage, using a metal cannula attached to a graduated syringe. The volume administered to each animal was calculated according to the fasted body weight at the time of dosing. Treatment of animals was sequential. Sufficient time was allowed between each group to confirm the survival of the previously dosed animals.
- Doses:
- 300 mg/kg was chosen as the starting dose.
2000 mg/kg. - No. of animals per sex per dose:
- 3 animals for 300 mg/kg.
6 animals for 2000 mg/kg. - Control animals:
- no
- Details on study design:
- Groups of treated animals were treated as shown on Table A.
The animals were observed for deaths or overt signs of toxicity 30 minutes, 1, 2 and 4 hours after dosing and subsequently once daily for up to 14 days.
Individual body weights were recorded prior to dosing and 7 and 14 days after treatment or at death.
At the end of the observation period the surviving animals were killed by cervical dislocation. All animals were subjected to gross pathological examination. This consisted of an external examination and opening of the abdominal and thoracic cavities for examination of major organs. The appearance of any macroscopic abnormalities was recorded. No tissues were retained.
Results and discussion
Effect levels
- Key result
- Sex:
- female
- Dose descriptor:
- LD50
- Effect level:
- > 2 000 mg/kg bw
- Based on:
- test mat.
- Mortality:
- Two animals treated at a dose level of 2000 mg/kg were killed for humane reasons, 1 or 2 days after dosing, due to the occurrence of clinical signs of toxicity that exceeded the severity limit set forth in the UK Home Office Project Licence. See Table 1.
- Clinical signs:
- Signs of systemic toxicity noted in four animals treated at a dose level of 2000 mg/kg included hunched posture, pilo-erection, ptosis, increased salivation, labored respiration, decreased respiratory rate, diarrhea, tiptoe gait and lethargy.
There were no signs of systemic toxicity noted in two animals treated at a dose level of 2000 mg/kg and all animals treated at a dose level of 300 mg/kg. See Tables 2 and 3. - Body weight:
- Surviving animals showed expected gains in body weight over the observation period. See Tables 4 and 5.
- Gross pathology:
- Abnormalities noted at necropsy of animals that were humanely killed were pale liver, or patchy pallor of the liver, hemorrhagic gastric mucosa and blood filled bladder. No abnormalities were noted at necropsy of animals that were killed at the end of the study. See Tables 6 and 7.
Any other information on results incl. tables
Table 1: Mortality Data
Dose Level mg/kg |
Sex |
Number of Animals Treated |
Deaths During Day of Dosing |
Deaths During Period After Dosing |
Deaths |
||||||||||
½ |
1 |
2 |
4 |
1 |
2 |
3 |
4 |
5 |
6 |
7 |
8-14 |
||||
300 |
Female |
3 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0/3 |
2000 |
Female |
3 |
0 |
0 |
0 |
0 |
1* |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1/3 |
Female |
3 |
0 |
0 |
0 |
0 |
0 |
1* |
0 |
0 |
0 |
0 |
0 |
0 |
1/3 |
*= Animal killed for humane reasons due to the occurrence of clinical signs of toxicity that exceeded the severity limit set forth in the UK Home Office Project Licence
Table 2: Individual Clinical Observations - 300 mg/kg
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 |
||
300 |
1-0 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
1-1 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
1-2 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0= No signs of systemic toxicity
Table 3: Individual Clinical Observations - 2000 mg/kg
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 |
2-0 Female |
0 |
0 |
0 |
0 |
H |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
2-1 Female |
0 |
0 |
0 |
0 |
PtSPHD |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
2-2 Female |
0 |
0 |
0 |
0 |
HPWt |
H |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
3-0 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
3-1 Female |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
0 |
|
3-2 Female |
0 |
0 |
0 |
0 |
0 |
PtSPHD |
|
|
|
|
|
|
|
|
|
|
|
|
0= No signs of systemic toxicity D = Diarrhea H = Hunched posture L = Lethargy P = Pilo‑erection
Pt = Ptosis Rd = Decreased respiratory rate Rl = Labored respiration S = Increased salivation Wt = Tiptoe gait
X* = Killed for humane reasons due to the occurrence of clinical signs of toxicity that exceeded the severity limit set forth in the UK Home Office Project Licence
Table 4: Individual Body Weights and Body Weight Changes - 300 mg/kg
Dose Level |
Animal Number |
Body Weight (g) at Day |
Body Weight Gain (g) During Week |
|||
0 |
7 |
14 |
1 |
2 |
||
300 |
1-0 Female |
171 |
182 |
188 |
11 |
6 |
1-1 Female |
192 |
217 |
226 |
25 |
9 |
|
1-2 Female |
178 |
191 |
201 |
13 |
10 |
Table 5: Individual Body Weights and Body Weight Changes - 2000 mg/kg
Dose Level mg/kg |
Animal Number and Sex |
Body Weight (g) at Day |
Body Weight (g) |
Body Weight Gain (g) During Week |
|||
0 |
7 |
14 |
1 |
2 |
|||
2000 |
2-0 Female |
180 |
197 |
214 |
|
17 |
17 |
2-1 Female |
167 |
- |
- |
154 |
- |
- |
|
2-2 Female |
183 |
196 |
204 |
|
13 |
8 |
|
3-0 Female |
178 |
188 |
208 |
|
10 |
20 |
|
3-1 Female |
159 |
168 |
174 |
|
9 |
6 |
|
3-2 Female |
174 |
- |
- |
150 |
- |
- |
Table 6: Individual Necropsy Findings- 300 mg/kg
Dose Level |
Animal Number |
Time of Death |
Macroscopic Observations |
300 |
1-0 Female |
Killed Day 14 |
No abnormalities detected |
1-1 Female |
Killed Day 14 |
No abnormalities detected |
|
1-2 Female |
Killed Day 14 |
No abnormalities detected |
Table 7: Individual Necropsy Findings - 2000 mg/kg
Dose Level |
Animal Number |
Time of Death |
Macroscopic Observations |
2000 |
2-0 Female |
Killed Day 14 |
No abnormalities detected |
2-1 Female |
Humanely killed Day 1 |
Liver: pale Gastric mucosa: hemorrhage Bladder: blood filled |
|
2-2 Female |
Killed Day 14 |
No abnormalities detected |
|
3-0 Female |
Killed Day 14 |
No abnormalities detected |
|
3-1 Female |
Killed Day 14 |
No abnormalities detected |
|
3-2 Female |
Humanely killed Day 2 |
Liver: patchy pallor Gastric mucosa: hemorrhage Bladder: blood filled |
Applicant's summary and conclusion
- Interpretation of results:
- Category 5 based on GHS criteria
- 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 - Category 5, >2000 - 5000 mg/kg body weight).
- Executive summary:
The acute oral median lethal dose (LD50) of ES421 Pinyl Nitrile in the Wistar strain rat was found to be greater than 2000 mg/kg body weight according to OECD Test Guideline 423 using the acute oral toxicity method.
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